[go: up one dir, main page]

WO2025064395A1 - Articles en papier couché biodégradable et procédés associés - Google Patents

Articles en papier couché biodégradable et procédés associés Download PDF

Info

Publication number
WO2025064395A1
WO2025064395A1 PCT/US2024/047028 US2024047028W WO2025064395A1 WO 2025064395 A1 WO2025064395 A1 WO 2025064395A1 US 2024047028 W US2024047028 W US 2024047028W WO 2025064395 A1 WO2025064395 A1 WO 2025064395A1
Authority
WO
WIPO (PCT)
Prior art keywords
biodegradable
poly
substitution
coating composition
average degree
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2024/047028
Other languages
English (en)
Inventor
Xiaobo Hu
Yichen FANG
Kaustubha Vishnu APTE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Chemical Co
Original Assignee
Eastman Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Chemical Co filed Critical Eastman Chemical Co
Publication of WO2025064395A1 publication Critical patent/WO2025064395A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/20—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier

Definitions

  • Embodiments of the present disclosure generally relate to biodegradable coated paper articles, and methods of manufacturing biodegradable coated paper articles.
  • Paper products in general (such as, paper cup, paper bowl, paper plate, paper box and paper lunch box, drink box, nonwoven cloth, and paper container, etc), is becoming more popular amongst consumers because it is regarded as more natural, more biodegradable, and more recyclable.
  • Uncoated paper-based packaging is typically highly biodegradable in certain environments and is very easily recyclable in commercial paper recycling systems.
  • a paper with no coating or adhesive at all cannot easily be formed into a paper product.
  • uncoated paper products have poor water/moisture barrier properties.
  • a polyethylene-based or other non- biodegradable polymeric is coated on the surface of the paper.
  • the coating may negatively affect the recyclability of the paper laminate in typical commercial paper recycling systems. Examples of such issues may include: i) coatings that clog the filters in repulping tanks and systems; ii) coatings that hold tightly onto the paper fibers and prevent a high % of the paper fibers being released into the water of the repulping system; iii) coatings that end up being incorporated into the recycled paper and negatively affect the appearance or performance properties of the resulting recycled paper.
  • the overall structure might be considered recyclable in the paper recycling stream if it can be stripped off and sent to a landfill or burned to fuel the plant, leaving the paper fibers to be collected and recycled into paper.
  • the coating still has several disadvantages because if it is improperly disposed of in the environment, the paper would biodegrade, but not the polyethylene-based or other non- biodegradable coating. This can lead to persistent microplastics negatively impacting the environment or appearing as a non-nutritive food source for some animals.
  • bio-based and biodegradable materials are under development.
  • some new bio-based and biodegradable materials have poor processability (slow coating and conversion speed), poor paper adhesion for thin coating, and high water vapor transmission rate.
  • biodegradable coated paper articles comprise a paper substrate and a layer provided on said paper substrate, wherein the layer is formed from a biodegradable coating composition comprising (alternatively, consisting essentially of or consisting of): a. a cellulose ester which is a cellulose acetate propionate (CAP) in an amount of 5.5 to 15 weight %, based on the total weight of (a), (b), and (c); b. a biodegradable polymer which is a polyester in amount of 45 to 75 weight %, based on the total weight of (a), (b), and (c); and c.
  • a biodegradable coating composition comprising (alternatively, consisting essentially of or consisting of): a. a cellulose ester which is a cellulose acetate propionate (CAP) in an amount of 5.5 to 15 weight %, based on the total weight of (a), (b), and (c); b. a biodegradable polymer which is a polyester
  • an inorganic filler in an amount of 12 to 40 weight %, based on the total weight of (a), (b), and (c); wherein the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), polycaprolactone (PCL), poly(butylene adipate terephthalate) (PBAT), polylactic acid (PLA), and combinations thereof, wherein the CAP has an average degree of substitution for hydroxyl substituents (DSOH) that is from 0.3 to 1.2, an average degree of substitution for the acetyl substituents (DS Ac) that is from 0 to 0.5, an average degree of substitution for the propionyl substituents (DSPr) that is from 1.8 to 2.7, and a ball drop viscosity of from 0.05 to 30 seconds as measured according to ASTM D-1343, wherein the biodegradable coating composition has a glass transition temperature (Tg) of -40 to -10°C,
  • biodegradable coated paper articles comprise: providing a paper substrate; extrusion coating a layer onto the paper substrate to form a biodegradable coated paper article, wherein the layer is formed from a biodegradable coating composition comprising (alternatively, consisting essentially of or consisting of): a. a cellulose ester which is a cellulose acetate propionate (CAP) in an amount of 5.5 to 15 weight %, based on the total weight of (a), (b), and (c); b. a biodegradable polymer which is a polyester in amount of 45 to 75 weight %, based on the total weight of (a), (b), and (c); and c.
  • a biodegradable coating composition comprising (alternatively, consisting essentially of or consisting of): a. a cellulose ester which is a cellulose acetate propionate (CAP) in an amount of 5.5 to 15 weight %, based on the total weight of (a), (b), and (c);
  • an inorganic filler in an amount of 12 to 40 weight %, based on the total weight of (a), (b), and (c); wherein the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), polycaprolactone (PCL), poly(butylene adipate terephthalate) (PBAT), polylactic acid (PLA), and combinations thereof, wherein the CAP has an average degree of substitution for hydroxyl substituents (DSOH) that is from 0.3 to 1.2, an average degree of substitution for the acetyl substituents (DSAc) that is from 0 to 0.5, an average degree of substitution for the propionyl substituents (DSPr) that is from 1.8 to 2.7, and a ball drop viscosity of from 0.05 to 30 seconds as measured according to ASTM D-1343, wherein the biodegradable coating composition has a glass transition temperature (Tg) of -40 to -10°C
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), poly(butylene adipate terephthalate) (PBAT), or a mixture thereof.
  • PBS poly(butylene succinate)
  • PBSA poly(butylene succinate adipate)
  • PBAT poly(butylene adipate terephthalate)
  • the inorganic filler is calcium carbonate.
  • the inorganic filler is in an amount of 20 to 40 wt.% of the biodegradable coating composition.
  • the CAP has an average degree of substitution for hydroxyl substituents that is from 0.5 to 1.0, an average degree of substitution for the acetyl substituents (DSAc) that is from 0 to 0.2, an average degree of substitution for the propionyl substituents (DSPr) that is from 2.0 to 2.5, and a ball drop viscosity of from 0.1 to 5 seconds as measured according to ASTM D-1343.
  • the biodegradable coating composition has a crystallization temperature (Tc) of 40 to 60 °C.
  • the biodegradable coating composition has a viscosity at 200 °C and 10 rad/s (V200) of 500 to 800 Pa s and a viscosity ratio (V65/V200) of less than 28, where V65 is the viscosity measured at 65 °C and 10 rad/s.
  • the paper substrate has a weight of 50 gsm to 350 gsm.
  • biodegradable coated paper articles may be used in the manufacture of food and beverage containers, such as, cups, plates, bowls, gable top cartons, folding cartons, paper pouches, and sandwich wraps. It is noted, however, that this is merely an illustrative implementation of the embodiments disclosed herein. The embodiments are applicable to other technologies that are susceptible to similar problems, paper bags, paper adhesive tape, paper labels, and ream wrap.
  • the biodegradable coated paper article, and its method of manufacture comprise a paper substrate and a layer provided on said paper substrate, wherein the layer is formed from a biodegradable coating composition.
  • the paper substrate has a weight basis of 50 gsm to 350 gsm. All individual values and subranges are included and disclosed herein.
  • the paper substrate has a weight basis ranging from a lower limit of 50, 75, 100, 125, or 150 gsm to an upper limit of 350, 300, 250, 200, or 150 gsm.
  • the paper substrates can be made from cellulosic or lignocellulosic materials.
  • cellulosic raw materials include paper and paper products such as newsprint, poly-coated paper, and effluent from paper manufacture;
  • examples of lignocellulosic raw materials include wood, wood fibers, and wood-related materials, as well as materials derived from kenaf, grasses, rice hulls, bagasse, cotton, jute, other stem plants (e.g., hemp, flax, bamboo; both bast and core fibers), leaf plants (e.g., sisal, abaca), and agricultural fibers (e.g., cereal straw, corn cobs, rice hulls, and coconut hair).
  • Aside from virgin raw materials, post-consumer or post-industrial recycled materials, industrial (e.g., offal), and processing waste (e.g., effluent) can also be used as fiber sources.
  • the layer is formed from a biodegradable coating composition comprising (a) a cellulose ester, (b) a biodegradable polymer, and (c) an inorganic filler.
  • the biodegradable coating composition comprises 5.5 wt.% to 15 wt.%, based on the total weight of (a), (b), and (c), of the cellulose ester as described herein. All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition comprises from a lower limit of 5.5, 5.8, 6.0, 6.2 or 6.5 wt.% to an upper limit of 15, 14, 13, or 12.5 wt.%, based on the total weight of (a), (b), and (c), of the cellulose ester.
  • the biodegradable coating composition comprises from 5.5 wt.% to 14 wt.%, 5.8 wt.% to 14 wt.%, or 6.0 wt.% to 12.5 wt.%, based on the total weight of (a), (b), and (c), of the cellulose ester.
  • the biodegradable coating composition comprises from 45 wt.% to 75 wt.%, based on the total weight of (a), (b), and (c), of a biodegradable polymer as described herein. All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition comprises from a lower limit of 45, 47.5, 50, 52.5 or 55 wt.% to an upper limit of 75, 72.5, 70, 67.5 or 65 wt.%, based on the total weight of (a), (b), and (c), of the biodegradable polymer.
  • the biodegradable coating composition comprises from 45 wt.% to72.5 wt.%, 47. 5 wt.% to 72.5 wt.%, or 50 wt.% to 72.5 wt.%, based on the total weight of (a), (b), and (c), of the biodegradable polymer. In one or more embodiments herein, the biodegradable coating composition comprises from 12 to 40 weight %, based on the total weight of (a), (b), and (c), of an inorganic filler as described herein. All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition comprises from a lower limit of 12, 15, 17.5 or 20 wt.% to an upper limit of 40, 37.5, or 35 wt.%, based on the total weight of (a), (b), and (c), of the inorganic filler.
  • the biodegradable coating composition comprises from 15 wt.% to 40 wt.%, 17.5 wt.% to 40 wt.%, or 20 wt.% to 40 wt.%, based on the total weight of (a), (b), and (c), of the inorganic filler.
  • the cellulose ester is a cellulose acetate propionate (CAP).
  • the CAP has an average degree of substitution for the hydroxyl substituents (DSOH) that is from 0.3 to 1.2, an average degree of substitution for the acetyl substituents (DSAC) that is from 0 to 0.5, and an average degree of substitution for the propionyl substituents (DSPr) from 1.8 to 2.7. All individual values and subranges are included and disclosed herein.
  • the CAP has an average degree of substitution for the hydroxyl substituents (DSOH) that is from 0.3 to 1.1, 0.4 to 1.1, or 0.5 to 1.0, an average degree of substitution for the acetyl substituents (DSAC) that is from 0 to 0.4, 0 to 0.3, 0 to 0.25, or 0 to 0.2, and an average degree of substitution for the propionyl substituents (DSPr) from 1.9 to 2.6 or 2.0 to 2.5.
  • DSOH hydroxyl substituents
  • DSAC average degree of substitution for the acetyl substituents
  • DSPr an average degree of substitution for the propionyl substituents
  • the CAP has an average degree of substitution for hydroxyl substituents that is from 0.5 to 1.0, an average degree of substitution for the acetyl substituents (DSAc) that is from 0 to 0.2, an average degree of substitution for the propionyl substituents (DSPr) that is from 2.0 to 2.5.
  • the substitution level is usually express in terms of degree of substitution (DS), which is the average number of non-OH substituents per anhydroglucose unit (AGU).
  • degree of substitution or “DS” refers to the average number of substituents per anhydroglucose ring of the cellulose polymer, wherein the maximum degree of substitution is 3.0. Because DS is a statistical mean value, a value of 1 does not assure that every AGU has a single substituent.
  • Total DS is defined as the average number of all of substituents per anhydroglucose unit.
  • the degree of substitution per AGU can also refer to a particular substituent, such as, for example, hydroxyl (DSOH) or acetyl (DSAC).
  • the CAP has a ball drop viscosity of 0.05 to 30 seconds as measured according to ASTM DI 343. All individual values and subranges are included and disclosed herein.
  • the CAP may have a ball drop viscosity of 0.05 to 10, 0.05 to 5, 0.05 to 2, or 0.1 to 2 seconds as measured according to ASTM DI 343.
  • the CAP may have a ball drop viscosity of 0.1 to 5 seconds as measured according to ASTM DI 343.
  • the CAP has an average degree of substitution for the hydroxyl substituents (DSOH) that is from 0.3 to 1.2, an average degree of substitution for the acetyl substituents (DSAC) that is from 0 to 0.5, and an average degree of substitution for the propionyl substituents (DSPr) from 1.8 to 2.7, and have a ball drop viscosity of 0.05 to 30 seconds as measured according to ASTM D1343. All individual values and subranges are included and disclosed herein.
  • DSOH hydroxyl substituents
  • DSAC average degree of substitution for the acetyl substituents
  • DSPr propionyl substituents
  • the CAP has an average degree of substitution for the hydroxyl substituents (DSOH) that is from 0.3 to 1.1, 0.4 to 1.1, or 0.5 to 1.0, an average degree of substitution for the acetyl substituents (DSAC) that is from 0 to 0.4, 0 to 0.3, 0 to 0.25, or 0 to 0.2, and an average degree of substitution for the propionyl substituents (DSPr) from 1.9 to 2.6 or 2.0 to 2.5, and a ball drop viscosity of 0.05 to 10, 0.05 to 5, 0.05 to 2, or 0.1 to 2 seconds as measured according to ASTM D1343.
  • DSOH hydroxyl substituents
  • DSAC average degree of substitution for the acetyl substituents
  • DSPr propionyl substituents
  • the CAP has an average degree of substitution for hydroxyl substituents that is from 0.5 to 1.0, an average degree of substitution for the acetyl substituents (DSAc) that is from 0 to 0.2, an average degree of substitution for the propionyl substituents (DSPr) that is from 2.0 to 2.5, and a ball drop viscosity of 0.1 to 5 seconds as measured according to ASTM DI 343.
  • the biodegradable polymer is a polyester.
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), polycaprolactone (PCL), poly(butylene adipate terephthalate) (PBAT), polylactic acid (PLA), derivatives thereof, and combinations thereof.
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), poly(butylene adipate terephthalate) (PBAT), derivatives thereof, and combinations thereof.
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), derivatives thereof, and combinations thereof.
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), polycaprolactone (PCL), poly(butylene adipate terephthalate) (PBAT), polylactic acid (PLA), and combinations thereof.
  • the polyester is selected from the group consisting of poly(butylene succinate) (PBS), poly(butylene succinate adipate) (PBSA), poly(butylene adipate terephthalate) (PBAT), and combinations thereof.
  • PBS poly(butylene succinate)
  • PBSA poly(butylene succinate adipate)
  • PBAT poly(butylene adipate terephthalate)
  • suitable inorganic fillers may include calcium carbonate, titanium dioxide, aluminum oxide, silicon dioxide, aluminosilicates, diatomaceous earth, magnesium oxide, talc, mica, zinc oxide, clay, barium sulfate, and mixtures thereof.
  • the inorganic filler is calcium carbonate, titanium dioxide, mica, or mixtures thereof. In other embodiments, the inorganic filler is calcium carbonate.
  • the biodegradable coating composition has a glass transition temperature (Tg) of -40 to -10°C, a melting temperature (Tm) of 80 to 110°C, and a crystallization temperature (Tc) of 40 to 70°C. All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition has a glass transition temperature (Tg) of -40 to -10°C, -35 to -15°C, -30 to -15°C, or -30 to -20°C; a melting temperature (Tm) of 80 to 110°C, 85 to 110°C, 90 to 105°C, or 92.5 to 102.5°C; and a crystallization temperature (Tc) of 40 to 70°C, 40 to 65°C, 40 to 60°C, or 42.5 to 58°C.
  • Tg glass transition temperature
  • Tm melting temperature
  • Tc crystallization temperature
  • the biodegradable coating composition has a Young’s modulus of greater than 700 MPa, elongation at break of 10 to 300%, and water vapor transmission rate (WVTR) of less than 600 g-mil/(m 2 -day). All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition has a Young’s modulus of greater than 700 MPa, greater than 800 MPa, greater than 900 MPa, or greater than 1 ,000 MPa; an elongation at break of 10 to 300%, 10 to 275%, or 10 to 250%,; and water vapor transmission rate (WVTR) of less than 600 g-mil/(m 2 -day), from 400 to 600 g- mil/(m 2 - day), or from 400 to 585 g-mil/(m 2 -day).
  • WVTR water vapor transmission rate
  • the biodegradable coating composition may have a viscosity at 200 °C and 10 rad/s (V200) of 500 to 800 Pa-s and a viscosity ratio (V65/V200) of less than 28, where V65 is the viscosity measured at 65 °C and 10 rad/s. All individual values and subranges are included and disclosed herein.
  • the biodegradable coating composition may have a viscosity at 200 °C and 10 rad/s (V200) of 500 to 800 Pa- s or 500 to 750 Pa- s and a viscosity ratio (V65/V200) of less than 28 or from 10 to 28, where V65 is the viscosity measured at 65 °C and 10 rad/s.
  • V200 viscosity at 200 °C and 10 rad/s
  • V65/V200 a viscosity ratio
  • the viscosity and the viscosity ratio (V65/V200) parameters are indicative of extrusion coating speeds and paper adhesion, such that a certain range of viscosity (i.e., the claimed range) at 200 °C can indicate higher coating speeds and a certain range (i.e., the claimed range) of viscosity ratio, V65/V200, can indicate better paper adhesion without any chill roll sticky issue.
  • the method comprises providing a paper substrate; extrusion coating a layer onto the paper substrate to form a biodegradable coated paper article, wherein the layer is formed from the biodegradable coating compositions as previously described herein.
  • the layer is a monolayer formed on the paper substrate.
  • the layer is a multilayer (i.e., two or more layers) formed on the paper substrate.
  • the layer is a multilayer formed on the paper substrate, wherein at least one of the multilayers is formed from the biodegradable coating compositions as previously described herein.
  • Viscosity is measured using a TA Instruments ARES-G2. Prior to measuring viscosity, the samples are dried in a vacuum oven for two days at 60 °C. The temperature sweeps are determined by measuring the viscosity from 230°C to 50°C at 10 rad/sec. The ramp rate is 5 °C/min and sampling interval is 10 seconds using a strain rate of 10%. The results are reported in Pa s.
  • the thermal transitions of the artificial turf infill coating compositions are measured by differential scanning calorimetry (DSC) using a DSC instrument (Q 2000, TA Instruments, New Castle, DE, USA). To analyze, 4 to 8 mg of each sample is sealed in an aluminum DSC pan and evaluated using a “heat-cool-heat” method. For the 1 st heat, the samples are evaluated from -80 °C to 250 °C at a scan rate of 20°C per min.
  • the sample is cooled from 250 °C to -80 °C at a scan rate of 20 °C per min and the midpoint transition value is marked as “Tc.”
  • the samples are reheated a second time from - 80 °C to 250 °C at a scan rate of 20 °C per min and the midpoint transition values are marked as Tg and Tm.
  • Tg is the glass transition temperature
  • Tm is the melting point
  • Tc is the crystallization temperature. The values are reported in degrees Celsius (°C).
  • the WVTR is measured according to ASTM F1249 method. Samples are pressure molded to 250 pm films at 200 °C. WVTR is reported in g mil/(m 2 day).
  • TMS trifluoroacetic acid-d/tetramethylsilane
  • Biodegradable coating compositions are formulated according to the following procedure: an 18 mm Leistritz twin screw extruder with single-hole die is used to compound the formulations and produce pellets. All resins are dried at 60-80 °C for at least 4 hours. All formulations are compounded at 180 to 230 °C without vacuum. The formulation details are shown in Table 3 below.

Landscapes

  • Biological Depolymerization Polymers (AREA)

Abstract

L'invention concerne des articles en papier couchs biodégradable comprenant un substrat en papier et une couche disposée sur ledit substrat en papier, la couche étant formée à partir d'une composition de revêtement biodégradable comprenant : a un ester de cellulose qui est un propionate d'acétate de cellulose (CAP) en une quantité de 5,5 à 15% en poids, sur la base du poids total de (a), (b) et (c); b un polymère biodégradable qui est un polyester en une quantité de 45 à 75% en poids, sur la base du poids total de (a), (b) et (c) ; et c une charge inorganique en une quantité de 12 à 40% en poids, sur la base du poids total de (a), (b) et (c) ; le polyester étant choisi dans le groupe constitué du poly(succinate de butylène) (PBS), du poly(adipate de succinate de butylène) (PBSA), de la polycaprolactone (PCL), du poly(butylène adipate téréphtalate) (PBAT), de l'acide polylactique (PLA), et de combinaisons de ceux-ci.
PCT/US2024/047028 2023-09-18 2024-09-17 Articles en papier couché biodégradable et procédés associés Pending WO2025064395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363583326P 2023-09-18 2023-09-18
US63/583,326 2023-09-18

Publications (1)

Publication Number Publication Date
WO2025064395A1 true WO2025064395A1 (fr) 2025-03-27

Family

ID=95072003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/047028 Pending WO2025064395A1 (fr) 2023-09-18 2024-09-17 Articles en papier couché biodégradable et procédés associés

Country Status (1)

Country Link
WO (1) WO2025064395A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020028857A1 (en) * 2000-03-31 2002-03-07 Holy Norman L. Compostable, degradable plastic compositions and articles thereof
US20120305015A1 (en) * 2011-05-31 2012-12-06 Sebastian Andries D Coated paper filter
WO2022243445A1 (fr) * 2021-05-21 2022-11-24 Neenah Gessner Gmbh Papier couché destiné à être utilisé comme matériau d'emballage
WO2023034472A1 (fr) * 2021-09-03 2023-03-09 Eastman Chemical Company Compositions d'acétate de cellulose pouvant être traitées à l'état fondu, masses fondues et articles formés à l'état fondu fabriqués à partir de celles-ci
WO2023059845A1 (fr) * 2021-10-08 2023-04-13 Eastman Chemical Company Articles contenant des compositions d'ester de cellulose pouvant être traitées par fusion comprenant une charge alcaline

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020028857A1 (en) * 2000-03-31 2002-03-07 Holy Norman L. Compostable, degradable plastic compositions and articles thereof
US20120305015A1 (en) * 2011-05-31 2012-12-06 Sebastian Andries D Coated paper filter
WO2022243445A1 (fr) * 2021-05-21 2022-11-24 Neenah Gessner Gmbh Papier couché destiné à être utilisé comme matériau d'emballage
WO2023034472A1 (fr) * 2021-09-03 2023-03-09 Eastman Chemical Company Compositions d'acétate de cellulose pouvant être traitées à l'état fondu, masses fondues et articles formés à l'état fondu fabriqués à partir de celles-ci
WO2023059845A1 (fr) * 2021-10-08 2023-04-13 Eastman Chemical Company Articles contenant des compositions d'ester de cellulose pouvant être traitées par fusion comprenant une charge alcaline

Similar Documents

Publication Publication Date Title
Torres-Giner et al. Melt processability, characterization, and antibacterial activity of compression-molded green composite sheets made of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) reinforced with coconut fibers impregnated with oregano essential oil
US9744556B2 (en) Method for coating paper
Kocabaş et al. Bulgur bran as a biopolymer source: Production and characterization of nanocellulose-reinforced hemicellulose-based biodegradable films with decreased water solubility
US8604123B1 (en) Biodegradable polymer composition with calcium carbonate and methods and products using same
CN102164983A (zh) 脂族聚酯
US20160017091A1 (en) Process for making starch resin copolymer
US10822491B2 (en) Composition of polyester and thermoplastic starch, having improved mechanical properties
CN111918914B (zh) 均相聚合物混合物、与其相关的方法及其用途
AU2020322110B2 (en) Flexible wood composite material
US20240336391A1 (en) Moulded Fiber Container for Dairy Products, Method for Manufacturing Such Container and Use Thereof
WO2025064395A1 (fr) Articles en papier couché biodégradable et procédés associés
US20190092960A1 (en) Substrate with cellulose acetate coating
WO2023052360A1 (fr) Film de stratification biodégradable
KR20220075394A (ko) 첨가제가 있는 대마 고분자 재료 및 이의 제조 방법
Liang et al. Improved crystallinity and biodegradability of 3D printable polylactic acid composite filaments filled with cellulose-enriched Huangjiu (Chinese rice wine) distillers’ grains as sustainable nucleating agents
CN114907647B (zh) 镀铝聚丙烯流延膜电晕层专用母料及其制备的薄膜
JP2025535731A (ja) 生分解性ポリマーブレンドおよびその使用
JP2024523792A (ja) フィルム材料
Eidelpes Biodegradable barrier coatings for paper-An EU Market research and assessment with a focus on food applications
HK40040369B (en) Homogenous polymer mixture, method related thereto and use thereof
HK40040369A (en) Homogenous polymer mixture, method related thereto and use thereof
FR3028518A1 (fr) Composition de polyester et d'amidon thermoplastique aux proprietes mecaniques ameliorees

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24869004

Country of ref document: EP

Kind code of ref document: A1