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WO2017156769A1 - Composition de revêtement de papier et processus de fabrication correspondants - Google Patents

Composition de revêtement de papier et processus de fabrication correspondants Download PDF

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Publication number
WO2017156769A1
WO2017156769A1 PCT/CN2016/076724 CN2016076724W WO2017156769A1 WO 2017156769 A1 WO2017156769 A1 WO 2017156769A1 CN 2016076724 W CN2016076724 W CN 2016076724W WO 2017156769 A1 WO2017156769 A1 WO 2017156769A1
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WO
WIPO (PCT)
Prior art keywords
coating composition
paper coating
paper
weight
pigment
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.)
Ceased
Application number
PCT/CN2016/076724
Other languages
English (en)
Inventor
Liqiang Fan
Rui Wang
Tao Wang
Siyuan Jiang
Haitao Du
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.)
Dow Global Technologies LLC
Rohm and Haas Co
Original Assignee
Dow Global Technologies LLC
Rohm and Haas 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 Dow Global Technologies LLC, Rohm and Haas Co filed Critical Dow Global Technologies LLC
Priority to CN201680083682.4A priority Critical patent/CN108779608A/zh
Priority to BR112018068713A priority patent/BR112018068713A2/pt
Priority to EP16893934.6A priority patent/EP3430201A4/fr
Priority to KR1020187027431A priority patent/KR20180126485A/ko
Priority to CA3017981A priority patent/CA3017981A1/fr
Priority to PCT/CN2016/076724 priority patent/WO2017156769A1/fr
Priority to JP2018549263A priority patent/JP2019513194A/ja
Priority to MX2018011266A priority patent/MX2018011266A/es
Priority to AU2016397589A priority patent/AU2016397589A1/en
Publication of WO2017156769A1 publication Critical patent/WO2017156769A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/10—Copolymers of styrene with conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties

Definitions

  • the present invention relates to a paper coating composition and a process of making this paper coating composition.
  • a coating composition is commonly applied to the base paper surface to ensure that the paper surface is smooth and free of “peaks and valleys” caused by base paper fibers, before images are printed onto the paper.
  • Paper manufacturers have traditionally added rheology modifiers (i.e., thickeners) , to the paper coating materials as additives to enhance physical stability of the coating material and control coat weight.
  • Hydrophobically-modified alkali-soluble emulsion ( “HASE” ) polymers are typically used as the preferred rheology modifier for this purpose.
  • Conventional HASE compositions typically use associative monomers with linear aliphatic alkyl chains as ending groups to serve as associative phobes.
  • Examples of such associative monomers are polyoxyethylene dodecyl-stearyl methacrylate, polyoxyethylene lauryl-myrisyl methacrylate
  • Inventors of the present invention have surprisingly discovered a novel coating composition.
  • this novel coating composition can be applied to paper surfaces during the pre-coating stages of the paper manufacturing process. More specifically, inventors of the present invention discovered, through a series of experimentations, that coating compositions containing HASE polymers made from certain associative monomers having hydrophobic phenyl radical end groups would have better low shear viscosity and higher thickening efficiency.
  • the present invention is a paper coating composition
  • a paper coating composition comprising an aqueous dispersion of a binder; pigment; starchand a hydrophobically modified alkali-swellable emulsion which comprises structural units of a carboxylic acid monomer, an acrylate monomer, and a polyethoxylated aralkyl phenol (meth) acrylate.
  • the coating composition of the present invention is a paper coating composition comprising an aqueous dispersion of a binder, starch, pigmentand an alkali-swellable emulsion hydrophobically modified with a polyethoxylated aralkyl phenol.
  • An aqueous dispersion of a binder is preferably chosen from a pure acrylic copolymer, a styrene acrylic copolymer, a styrene butadiene copolymer, or a vinyl acrylic copolymer poly vinyl acetate, vinyl acetate emulsion mixtures of these binders.
  • Suitable unsaturated monomers for use in forming the above-mentioned copolymers are generally ethylenically unsaturated monomers that include vinylaromatic compounds (e.g. styrene, ⁇ -methylstyrene, o-chlorostyrene, and vinyltoluenes) ; 1, 2-butadiene; conjugated dienes (e.g.
  • ⁇ , ⁇ -monoethylenically unsaturated mono-and dicarboxylic acids or anhydrides thereof e.g. acrylic acid, methacrylic acid, crotonic acid, dimethacrylic acid, ethylacrylic acid, allylacetic acid, vinylacetic acid maleic acid, fumaric acid, itaconic acid, mesaconic acid, methylenemalonic acid, citraconic acid, maleic anhydride, itaconic anhydride, and methylmalonic anhydride
  • esters of ⁇ , ⁇ -monoethylenically unsaturated mono-and dicarboxylic acids having 3 to 6 carbon atoms with alkanols having 1 to 12 carbon atoms e.g.
  • vinyl chloride and vinylidene chloride vinyl esters of C 1 -C 18 mono-or dicarboxylic acids (e.g. vinyl acetate, vinyl propionate, vinyl n-butyrate, vinyl laurate and vinyl stearate) ; C 1 -C 4 hydroxyalkyl esters of C 3 -C 6 mono-or dicarboxylic acids, especially of acrylic acid, methacrylic acid or maleic acid, or their derivatives alkoxylated with from 2 to 50 moles of ethylene oxide, propylene oxide, butylene oxide or mixtures thereof, or esters of these acids with C1-C18 alcohols alkoxylated with from 2 to 50 moles of ethylene oxide, propylene oxide, butylene oxide or mixtures thereof (e.g.
  • (meth) acrylate means acrylate, methacrylate, and mixtures thereof and the term “ (meth) acrylic” used herein means acrylic, methacrylic, and mixtures thereof.
  • the monomers can also include one or more crosslinkers such as N-alkylolamides of ⁇ , ⁇ -monoethylenically unsaturated carboxylic acids having 3 to 10 carbon atoms and esters thereof with alcohols having 1 to 4 carbon atoms (e.g., N-methylolacrylamide and N-methylolmethacrylamide) ; glyoxal based crosslinkers; monomers containing two vinyl radicals; monomers containing two vinylidene radicals; and monomers containing two alkenyl radicals.
  • crosslinkers such as N-alkylolamides of ⁇ , ⁇ -monoethylenically unsaturated carboxylic acids having 3 to 10 carbon atoms and esters thereof with alcohols having 1 to 4 carbon atoms (e.g., N-methylolacrylamide and N-methylolmethacrylamide) ; glyoxal based crosslinkers; monomers containing two vinyl radicals; monomers containing two vinyl
  • Exemplary crosslinking monomers include diesters of dihydric alcohols with ⁇ , ⁇ -monoethylenically unsaturated monocarboxylic acids, of which in turn acrylic acid and methacrylic acid can be employed.
  • Examples of such monomers containing two non-conjugated ethylenically unsaturated double bonds are alkylene glycol diacrylates and dimethacrylates, such as ethylene glycol diacrylate, 1, 3-butylene glycol diacrylate, 1, 4-butylene glycol diacrylate and propylene glycol diacrylate, divinylbenzene, vinyl methacrylate, vinyl acrylate, allyl methacrylate, allyl acrylate, diallyl maleate, diallyl fumarate and methylenebisacrylamide.
  • the crosslinking monomers include alkylene glycol diacrylates and dimethacrylates, and/or divinylbenzene.
  • the cross-linking monomers when used in the copolymer can be present in an amount of from 0.2% to 5% by weight, based on the weight of the total monomer and are considered part of the total amount of monomers used in the copolymer.
  • molecular weight regulators e.g., from 0.01% to 4% by weight based on the total dry monomer weight
  • tert-dodecyl mercaptan e.g., tert-dodecyl mercaptan
  • the amount of binder dispersion in the paper coating composition of the present invention may be present in an amount of 3% to 20% , preferably 4% to 15% , and more preferably, 5% to 10% by weight, based on the dry weight of total pigment amount in the paper coating composition.
  • the coating composition of the present invention further comprises pigments.
  • the pigments are inorganic materials such as clays with fine to coarse particle sizes; calcined clay; calcium carbonates including precipitated and ground calcium carbonates; titanium dioxides including anatase and rutile; talc; silica; aluminum silicate; hydrated alumina; and aluminum trihydrate, either alone or as a combination of two kinds or more, dispersed in an aqueous medium in the form of a slurry.
  • a dry pigment is first dispersed in water or solvent to form a pigment slurry.
  • the preparation of pigment slurries is well known in the art and may include dispersants such as polyacrylic acid or surfactants to aid in the dispersion and stabilization of the pigment particles.
  • Hydrophobically modified alkali-swellable emulsion HASE
  • the coating composition comprises a hydrophobically modified alkali-swellable emulsion (HASE) polymer comprising structural units of the following monomers: a) an ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomer, preferably from 35% to 55% , more preferably from 40% to 50% , and most preferably from 45% to 49% , by weight based on the dry weight of the polymer; b) an ⁇ , ⁇ -ethylenically unsaturated nonionic monomer, from 40% to 55% , preferably from 42% to 53% , and more preferably from 45% to 50% , by weight based on the dry weight of the HASE polymer; and c) a polyethoxylated aralkyl phenol (meth) acrylate, from 0.5% to 20% , preferably from 1.0% to 15% , and more preferably from 2.5% to 10% , by weight based on the dry weight of the HASE polymer.
  • HASE hydrophobically modified
  • Suitable examples of ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomers include monobasic acids, such as acrylic, methacrylic, crotonic, and acyloxypropionic acids; and dibasic acid monomers, such as maleic, fumaric, and itaconic acids.
  • the dibasic acid monomers are used in place of a portion, e.g., up to about 10 weight percent, of the monobasic acid.
  • Monoesters of the dibasic acid monomers, such as monobutyl ester of maleic acid can also be used.
  • the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomers are acrylic acid, methacrylic acid, and a combination thereof.
  • Suitable ⁇ , ⁇ -ethylenically unsaturated nonionic monomers include methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, decyl acrylate, lauryl acrylate, methyl methacrylate, butyl methacrylate, isodecyl methacrylate, lauryl methacrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate; methacrylonitrile; ethacrylonitrile; methacrylamide; methacrylamide; amino-functional and ureido-functional monomers; monomers bearing acetoacetate-functional groups; styrene and substituted styrenes; butadiene; ethylene, propylene, ⁇ -olefins such as 1-decene; vinyl acetate, vinyl butyrate, vinyl versatate and other vinyl esters; and vinyl monomers such as vinyl chloride and vinyl
  • Preferred examples are ethyl acrylate, methyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, vinyl acetate, acrylonitrile and the mixtures thereof.
  • An especially preferred nonionic monomer is ethyl acrylate.
  • the polyethoxylated aralkyl phenol (meth) acrylate has the general formula:
  • H 2 C C (R) CO 2 (CH 2 CH 2 O) n (CH (R 1 ) CH 2 O) m R 2
  • R is H or CH 3 ;
  • R 1 is C 1 -C 2 alkyl;
  • R 2 is aralkyl phenyl;
  • n is an integer from 6 to 100 and m is an integer from 0 to 50, provided that n ⁇ m and m+n is from 6 to 100.
  • polyethoxylated aralkyl phenol (meth) acrylate examples include polyethoxylated tristyryl phenol methacrylate (commercially available as SIPOMER SEM-25 (60% active) , as well as SIPOMER HPM-400 (50% active) ) from Solvay Chemicals, Inc.
  • the HASE comprises structural units of a polyethoxylated tristyryl phenol with 25 oxyethylene (EO) units, as represented by the following chemical structure:
  • the HASE polymer is prepared by emulsion polymerization well-known in the art.
  • thermal or redox initiation process may be used as part of the emulsion polymerization process.
  • suitable free radical initiators include hydrogen peroxide, sodium peroxide, potassium peroxide, t-butyl hydroperoxide, ammonium and/or alkali metal persulfates, sodium perborate, perphosphoric acid, and salts thereof; potassium permanganate, and ammonium or alkali metal salts of peroxydisulfuric acid.
  • the free radical initiators may be used typically at a level of 0.01 to 3.0% by weight, based on the dry weight of monomers.
  • Redox systems comprising the above described initiators coupled with a suitable reductant may also be used in the emulsion polymerization process.
  • suitable reductants include sodium sulfoxylate formaldehyde, ascorbic acid, isoascorbic acid, alkali metal and ammonium salts of sulfur-containing acids, such as sodium sulfite, bisulfite, thiosulfate, hydrosulfite, sulfide, hydrosulfide or dithionite, formadinesulfinic acid, hydroxymethanesulfonic acid, acetone bisulfite, glycolic acid, glyoxylic acid hydrate, lactic acid, glyceric acid, malic acid, tartaric acid and salts of the preceding acids.
  • Redox reaction catalyzing metal salts of iron, copper, manganese, silver, platinum, vanadium, nickel, chromium, palladium, or cobalt may be used.
  • Other additives such as, for example, free radical initiators, oxidants, reducing agents, neutralizers, and dispersants may be added prior to, during, or subsequent to the polymerization reaction.
  • neutralizers can be added to the aqueous emulsion polymer during or after the reaction period to control pH.
  • Neutralizers can be selected from mineral bases such as sodium hydroxide, potassium hydroxide, salts of phosphoric acid, organic amines such as, for example, alkyl hydroxylamine, and ammonia.
  • chain transfer agents such as, for example, n-dodecyl mercaptan should be used in an amount between 0.01% and 0.3% by weight, or, more preferably, between 0.01% to 0.2% by weight, or, more preferably, between 0.01% and 0.1% by weight, based on the dry weight of monomer mixture.
  • Use of such low amount of the chain transfer agents in an emulsion copolymer avoids possible increase in water swelling or a decrease in elongation abilities.
  • Suitable surfactants may include styrenated phenol sulfates, such as Hitenol TM BC-1025 (from Montello inc., Tulsa, OK) , Aerosol TM NPES –930 (polyoxyethylene) nonylphenol (NP) ammonium sulfate (from Cytec Industries, Woodland Park, NJ) , ethoxylated styrenated phenol sulfates, such as E-Sperse TM RS-1596 and E-Sperse TM RS-1618 (from Ethox Chemicals, Greenville, SC) , and sodium dodecylallyl sulfosuccinate such as TREM TM LF-40 (from Cognis, Cincinnati, OH) .
  • styrenated phenol sulfates such as Hitenol TM BC-1025 (from Montello inc., Tulsa, OK) , Aerosol TM NPES –930 (polyoxyethylene)
  • the amount of HASE in the paper coating composition of the present invention may be present in an amount of 0.01% to 1% , preferably 0.03% to 0.6% , and more preferably, 0.05% to 0.4% by weight, based on the dry weight of total pigment amount in the paper coating composition.
  • the coating composition further comprises starch.
  • Starch as used herein, encompasses materials known as starches or flours that can come from one or more of a variety of sources, such as corn, wheat, pea, potato, rice, tapioca, and others known in the industry.
  • the starch can be substituted or unsubstituted. A combination of two or more types of starch can be used.
  • the starch is a thinned starch.
  • Thiinned starch means starch whose molecular weight has been reduced, for example by acid or chemical hydrolysis, enzymatic hydrolysis, mechanical forces or other means.
  • An example of a starch product that is suitable for use in some embodiments of the present invention is from National Starch &Chemical Company.
  • the starch in the paper coating composition of the present invention may be present in an amount of 0.1% to 10% , and preferably from 1% to 9% , more preferably from 3% to 7% , by weight, based on the dry weight of the pigment amount in the paper coating composition.
  • the coating composition is a mixture of the coating composition.
  • the coating composition of the present invention may be prepared by techniques well known in the paper coating art.
  • the process of preparing the coating composition of the present invention may comprise mixing the aqueous dispersion of a binder, the pigment slurry, the starch solution, the HASE polymer, and water. Neutralizer is added to the dispersion to control pH.
  • Other optional components may also be added as described above.
  • Components in the coating composition may be mixed in any order to provide the coating composition of the present invention. Any of the above-mentioned optional components may also be added to the composition during or prior to the mixing to form the coating composition.
  • the amount of solids in the coating composition is between 30% -75% by weight, based on total weight of the coating composition.
  • the coating composition of the present invention may comprise dispersant, OBA, dyestuff, biocide, co-solvent and surfactant.
  • the paper coating compositions may be applied to a paper substrate by techniques well known in the art. For example, after forming a paper substrate, the paper coating compositions may be applied with a rolling applicator such as a metered size press; a blade coater such as a short dwell time applicator; an air knife coater; a slot die coater such as a jet applicator; or a brush.
  • a rolling applicator such as a metered size press
  • a blade coater such as a short dwell time applicator
  • an air knife coater such as a jet applicator
  • a brush such as a a st.g., a st., a st., a st., a st., a st., a t., a t., a t., a t., a t., a t., a t., a t., a t.,
  • the coating composition of the present invention is particularly suitable for use as a pre-coating material during the paper making process.
  • the aqueous coating composition of the present invention can be used alone, or in combination with other coatings to form multi-layer coatings on a paper surface.
  • Table 1 below lists the binder dispersion used to make the inventive and comparative coating compositions.
  • Table 2 below lists the representative raw materials used to make the HASE polymers in the inventive and comparative coating compositions.
  • Table 3 below shows the additional materials that can be added to the binder dispersion and the HASE polymers, in order to make the inventive and comparative coating compositions.
  • Tables 1-3 show the acronyms for these chemicals, the function for each material, and the commercial supplier from which these materials could be obtained.
  • Brookfield (BF) viscosity (measured in cps) , representing the low-shear viscosity of the coating composition, is measured by a Brookfield viscometer DV-II+Pro EXTRA device, available from Brookfield Engineering Laboratories, Inc., at a low-shear rate at 50 rpm with a spindle 5.
  • a higher Brookfield viscosity reading indicates better thickening efficiency.
  • DISPONIL FES 32 emulsifier Charge 500.00 grams of DI water and 16.10 g of DISPONIL FES 32 emulsifier into a five-liter, four-necked flask equipped with a mechanical stirrer, a nitrogen sweep, a thermocouple, and a condenser. Heat the flask to 86°C. Dissolve 1.12 grams of ammonium persulfate (APS) in 16 grams of DI water, and added into the flask to initiate the polymerization process.
  • APS ammonium persulfate
  • a monomer mixture including: 291.90 grams of EA, 287.80 grams of MAA, 51.75 grams SIPOMER SEM-25, 16.10 grams of DISPONIL FES 32 emulsifier mixed in 600.00 grams of DI water, as well as an additional charge of initiator mixture consisting of 0.34grams of APS dissolved in 58.0 grams of DI water, being co-fed into the flask with the monomer mixture over a period of 80 minutes while the flask temperature was maintained at 86°C.
  • a chaser mixture consists of 20.0 grams of FeSO 4 solution (0.15 % ) , 0.42 grams of t-BHP mixed in 10.00grams of DI water, and 0.21 grams of IAA mixed in 14.00 grams of DI water were then added into the flaks. After holding at 60°C for 15 minutes, the same amount of chaser mixture was charged again into the flask. The flask was then cooled to 40°C, and a buffer solution of 1.1 grams of sodium acetate mixed in 130.00 grams of DI water was added into the flask over 10 minutes.
  • a biocide solution consists of 3.71 grams of KATHON LX biocide (1.5% active) mixed in 12 grams of DI water was added into the flask over a span of 10 minutes. After the completion of polymerization process, the resulting HASE emulsion was cooled to ambient temperature and filtered through a 325 mesh size screen.
  • the procedure described above illustrates the method for making the HASE polymer used in Inventive Coating Composition 1, which results in a HASE polymer that contains 5% of SIPOMER SEM-25 in its composition.
  • polyoxyethylene cetyl-stearyl methacrylate is used along with EA and MAA to make the HASE for Comparative Coating Composition 1.
  • polyoxyethylene cetyl-stearyl (C 16 - 18 ) methacrylate is a linear alkyl chain.
  • Comparative Coating Composition 1 it contains a 5% of polyoxyethylene cetyl-stearyl methacrylate in its composition.
  • polyoxyethylene behenyl-tricosyl methacrylate (commercially obtainable as SIPOMER BEM) is used along with EA and MAA to make the HASE polymer for that coating composition.
  • polyoxyethylene cetyl-stearyl methacrylate used in Comparative Coating Composition 1
  • polyoxyethylene behenyl-tricosyl (C 22-23 ) methacrylate is also a linear alkyl radical except that it has a longer carbon chain.
  • it contains a 3% of polyoxyethylene behenyl-tricosyl methacrylate in its composition.
  • the inventive and comparative coating compositions were made.
  • 1,400 grams of the pigment slurry (calcium carbonate slurry) was mixed with 55.7 grams of the starch solution, as well as 36 grams of styrene-butadiene binder under room temperature, in to a 1L barrel with constant stirring at 300 rpm.
  • 1.6 grams of sodium hydroxide (10% active) were slowly added into the mixture to raise the pH of the coating composition to above 9.
  • 0.8 grams of HASE was diluted with the same amount of DI water, and then added into the coating composition to reduce the percent solid of the coating composition to 68% .
  • the coating composition was being stirred at 800 rpm for 8 minutes before the Brookfield viscosity is tested.
  • Table 4 compares the thickening efficiencies of the inventive and comparative coating compositions, measured in terms of viscosity reading on the Brookfield viscometer.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Paints Or Removers (AREA)

Abstract

Une nouvelle composition de revêtement comprend une dispersion aqueuse d'un liant ; un pigment ; de l'amidon ; et une émulsion pouvant gonfler dans un alcali modifiée de manière hydrophobe qui comprend des unités structurales d'un monomère d'acide carboxylique, d'un monomère d'acrylate et d'un méthacrylate de phénol d'aralkyle polyéthoxylé. Cette nouvelle composition de revêtement présente une efficacité d'épaississement améliorée.
PCT/CN2016/076724 2016-03-18 2016-03-18 Composition de revêtement de papier et processus de fabrication correspondants Ceased WO2017156769A1 (fr)

Priority Applications (9)

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CN201680083682.4A CN108779608A (zh) 2016-03-18 2016-03-18 纸涂料组合物和其制备方法
BR112018068713A BR112018068713A2 (pt) 2016-03-18 2016-03-18 composição de revestimento de papel, substrato de papel revestido, e, método para formar um substrato de papel revestido.
EP16893934.6A EP3430201A4 (fr) 2016-03-18 2016-03-18 Composition de revêtement de papier et processus de fabrication correspondants
KR1020187027431A KR20180126485A (ko) 2016-03-18 2016-03-18 종이 코팅 조성물 및 이의 제조 방법
CA3017981A CA3017981A1 (fr) 2016-03-18 2016-03-18 Composition de revetement de papier et processus de fabrication correspondants
PCT/CN2016/076724 WO2017156769A1 (fr) 2016-03-18 2016-03-18 Composition de revêtement de papier et processus de fabrication correspondants
JP2018549263A JP2019513194A (ja) 2016-03-18 2016-03-18 紙コーティング組成物及びそれを作製するプロセス
MX2018011266A MX2018011266A (es) 2016-03-18 2016-03-18 Composicion de recubrimiento de papel y procesos para realizar la misma.
AU2016397589A AU2016397589A1 (en) 2016-03-18 2016-03-18 Paper coating composition and processes of making thereof

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CN113710457A (zh) * 2019-05-20 2021-11-26 株式会社Tbm 印刷用纸和印刷用纸的制造方法
WO2024064582A1 (fr) * 2022-09-20 2024-03-28 Rohm And Haas Company Procédé de préparation d'un latex acrylique résistant aux microbes

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JP2021046549A (ja) * 2020-11-20 2021-03-25 ダウ グローバル テクノロジーズ エルエルシー 紙コーティング組成物及びそれを作製するプロセス
KR102396414B1 (ko) * 2020-12-10 2022-05-10 한국신발피혁연구원 리사이클링이 가능한 식물성 지방산 기반 종이 코팅용 생분해성 수지 조성물

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WO2024064582A1 (fr) * 2022-09-20 2024-03-28 Rohm And Haas Company Procédé de préparation d'un latex acrylique résistant aux microbes

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MX2018011266A (es) 2019-02-13
KR20180126485A (ko) 2018-11-27
CN108779608A (zh) 2018-11-09
JP2019513194A (ja) 2019-05-23
CA3017981A1 (fr) 2017-09-21
BR112018068713A2 (pt) 2019-01-22
EP3430201A4 (fr) 2019-10-30
AU2016397589A1 (en) 2018-10-25
EP3430201A1 (fr) 2019-01-23

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