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WO2002010283A1 - Matiere thermoplastique a base de resine naturelle - Google Patents

Matiere thermoplastique a base de resine naturelle Download PDF

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Publication number
WO2002010283A1
WO2002010283A1 PCT/EP2001/008826 EP0108826W WO0210283A1 WO 2002010283 A1 WO2002010283 A1 WO 2002010283A1 EP 0108826 W EP0108826 W EP 0108826W WO 0210283 A1 WO0210283 A1 WO 0210283A1
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WO
WIPO (PCT)
Prior art keywords
thermoplastic composition
composition according
resin
protein
thermoplastic
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/EP2001/008826
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German (de)
English (en)
Inventor
Norbert Mundigler
Markus Eibl
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT0917801A priority Critical patent/AT412646B/de
Priority to AU2001291706A priority patent/AU2001291706A1/en
Priority to DE10193049T priority patent/DE10193049D2/de
Publication of WO2002010283A1 publication Critical patent/WO2002010283A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
    • C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L93/00—Compositions of natural resins; Compositions of derivatives thereof

Definitions

  • the invention relates to a thermoplastic composition containing a resin and a protein, a process for their preparation and moldings obtainable therefrom.
  • thermoplastic material mass of the type mentioned is known from EP-B - 0 675 920 and FR-B - 837.617.
  • the composition that can be used as a material for injection molding contains at least one natural resin and one or more natural products containing starches and / or protein. Copals, damar resins and gilsonite are used as natural resins.
  • the composition according to FR-B - 837.617 comprises a substance selected from the group of proteins, starches and their derivatives and colloidally soluble in water, a resinous material such as a natural or synthetic resin, a solvent for the resinous material, an alkali and a organic aluminum salt.
  • Natural resins are to be understood here as resins of plant or animal origin, whereby plant-based natural resins are based on excretions (exudates) from special plants, mostly trees, which flow out as sticky masses after natural or artificial injuries and are more volatile in the air due to evaporation Solidify components as well as polymerization and oxidation reactions.
  • Fossil natural resins such as Copals, Kaurikopale or amber are found worldwide as deposits.
  • Freshly obtained natural resins are known, for example, under the names acaroid resins, Canada balm, Japanese lacquer, damar resin, dragon blood, myrrh, Venetian turpentine, rosin etc.
  • Natural resins mainly contain resin acids and have a certain surface stickiness.
  • the unfavorable properties of the natural resins include low temperature and aging resistance, in particular low resistance to oxygen, which leads to unsightly products due to discoloration, and poor light resistance and tackiness. Another problem with the use of natural resins can be seen in their high tendency to crystallize, which leads to strong embrittlement after a short storage period of the products.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a thermoplastic composition which essentially contains biodegradable substances, but nevertheless has known properties in its properties, for example water resistance, rigidity, etc. synthetic nature is comparable or can be adapted to specific requirements.
  • the problems that arise when using natural resins should be avoided.
  • the thermoplastic composition should be easy to process with known means and have good mold release or mold separation.
  • thermoplastic composition according to the invention contains a natural resin and a protein, the resin being a chemically modified natural resin.
  • the term “chemical modification” is understood to mean a change in the covalent (electron pair) bond of the natural resin, which is brought about by breaking existing or by forming new covalent bonds.
  • this term does not include the formation of Salts, for example Ca or Zn resinates, comprise, since these are bonds of an ionic character in which the acid number can only be reduced to about 40 mg KOH / g.
  • Chemically modified natural resins have so far only been used as so-called tackifiers in the production of paints, for printing inks and in particular for adhesives ("adhesive resins"). These include tackifying substances with the aid of which adhesives can be formulated from suitable backbone polymers, ie the adhesive resins confer the Backbone polymers include adhesive, wetting, tackifying properties.
  • polypeptides have hydrophilic and hydrophobic side chains, the prerequisite for good compatibility with both hydrophilic polymers, for example starch, and with hydrophobic polymers, for example rubber or synthetic plastics, is given. Due to the free groups (-NH 2 , -COOH, -OH, -SH) of the amino acids in the polymer chains of the proteins, the proteins can be modified, react with other components in the material or catalyze reactions. Alkali or slightly reducing agents can be used for the modification.
  • the thermoplastic composition according to the invention can thus be varied over a wide range with regard to rigidity and elasticity.
  • the chemically modified natural resin component of the thermoplastic composition according to the invention advantageously brings about an increase in water resistance.
  • EP-B-0 712 428 discloses a thermoplastic molding which is based on a molding compound made from particles of a vegetable fiber material and which are embedded in a matrix of a biopolymer converted into a gel-melt-like state at elevated temperature and pressure, and on further additives based, the fibers are impregnated with a resin acid component.
  • resin acid component resin acids, such as those obtained when working up natural resins, resin acid derivatives and modified, e.g. resin acids esterified with polyols.
  • thermoplastic composition according to the invention contains a chemical modified natural resin so that it is not necessary to extract resin acids from the natural resins.
  • the chemically modified natural resin is non-polar. If necessary, the chemical modification is an esterification with a mono- or polyhydric alcohol; a di-oligo or polymerization; Hydrogenation, dehydrogenation; or a Diels-Alder reaction.
  • the resin is a disproportionated, hydrogenated or polymerized rosin or a rosin derivative.
  • This also includes resin esters, for example maleate resins, and resin alcohols.
  • polyterpenes include polymers based on naturally occurring cycloaliphatic compounds, e.g. To understand alpha-pinene or beta-pinene, which consist of (C ⁇ o) units.
  • thermoplastic composition according to the invention.
  • resin acids such as abietic, neoabietic, levopimaric, pimaric, isopimaric, palustric or dehydroabietic acid, are also to be counted as "natural resins" in the sense of the present invention.
  • Both vegetable proteins preferably a concentrate with at least 50% protein content (N x 6.25) or an isolate with at least 70% protein content, for example proteins which are obtained as by-products in the starch industry, such as wheat gluten, corn protein, potato protein, are advantageously used as proteins , or proteins from the oil industry, such as rapeseed meal or legume proteins such as soy protein, as well as animal proteins, among which waste from the leather-producing industry, such as shavings and Glue leather, leather sanding dust, hair, wool, cotton, silk, or by-products from milk, blood and meat processing, such as collagens, gelatins and keratins, are to be understood.
  • the leather waste is said to come from heavy metal-free tanning, preferably from vegetable tanning.
  • Some animal proteins such as collagen or proteins made of leather, silk, hair or wool, have a linear structure with which they can give the thermoplastic mass strength through additional crosslinking.
  • the tertiary structure of the proteins which is stabilized by S-bridges, among other things, can be opened easily and reversibly, which makes the polymer chains easier to access and more densely packed, and thus a high strength or stiffness of the thermoplastic mass can be achieved.
  • Animal and vegetable proteins for example leather and gluten
  • the strength of the thermoplastic mass can be varied and adjusted with the proportion of animal proteins in the protein mixture.
  • Mixtures of leather and vegetable protein also have a particularly good heat resistance, so that they are used in thermal forming, e.g. Injection molding, less shrinkage than masses with only animal protein content.
  • the mass ratio of chemically modified natural resin to protein is preferably between 1.0: 1.5 and 1.0: 4.0.
  • the thermoplastic composition can contain at least one filler.
  • This can be from the known group of inorganic fillers, which are also used in plastics or in the paper industry. Suitable inorganic fillers are, for example, mica, kaolin, titanium dioxide, chalk, talc, etc. By adding graphite, a conductive material can be obtained without the thermoplastic composition becoming brittle due to the inorganic additive. These fillers are particularly advantageous in the production of very rigid products and also have an additional positive effect in mold separation.
  • fibers based on cellulose-containing materials such as wood, man-made fibers, flax, hemp, coconut, etc.
  • Fillers can also be used as fillers, especially if the product weight is low and the ash content in the In the event of thermal recycling to be achieved.
  • Organic fillers bind water, reduce expansion and increase strength.
  • the addition of resin-rich woods improves the swelling of the thermoplastic mass.
  • Elastomers for example rubbers, which are in powder or granule form, are also possible as additives.
  • Rubber latices are not so suitable as additives or fillers, since they are not very resistant to aging and, because of their emulsified or dispersed character, also introduce too much liquid into the overall mixture. With water contents of 5% or more in the total mass, there are already expansions due to foaming at the extruder nozzle and no dense granules are obtained.
  • the thermoplastic composition can also contain a modified rubber.
  • modified solid rubber By adding modified solid rubber, high elasticities and elongation values can be achieved. An additional effect is an increase in water resistance.
  • thermoplastic elastomers for example, thermoplastic elastomer
  • TPE Elastomers
  • styrene block copolymers especially based on styrene block copolymers, or styrene-butadiene rubber, are suitable as additives. Due to their high hydrophobicity, styrene block copolymers are well compatible with the thermoplastic composition according to the invention.
  • a semi-drying or drying oil such as e.g. Linseed oil, optionally with a siccative, or a modified vegetable oil, e.g. epoxidized linseed oil added in the manufacture of the thermoplastic mass.
  • This measure can also very well improve water resistance. Via the reactive group of the oils there is a connection to the proteins, which increases the hydrophobicity and prevents the oil from exuding.
  • thermoplastic composition can also contain plasticizers, for example polyols such as glycerol or sorbitol, as further additives. These reduce the tendency to expand and lead to less bending-resistant products. Dyes and pigments, for example titanium oxide and / or biocides, can also advantageously be contained in the thermoplastic composition.
  • thermoplastic composition according to the invention can be added to the thermoplastic composition according to the invention.
  • further processing aids such as lubricants, release agents, plasticizers, etc., which are known from plastics production, can be added to the thermoplastic composition according to the invention.
  • Processing aids include, for example, fatty acids and fatty acid derivatives such as hydrogenated fatty acids, amidated fatty acids, alkanolamides, metal soaps, e.g. Calcium stearate.
  • the proportion of protein and chemically modified natural resin can make up 20 to 90% by weight of the total mass in preferred embodiments of the invention, protein being 10 to 60% by weight and chemically modified resin can be contained to 10 to 30 wt .-% of the total mass.
  • thermoplastic composition is claimed with the proviso that it does not contain any vegetable fiber material.
  • the invention also relates to moldings which can be obtained by thermally deforming a thermoplastic composition according to the invention.
  • Shaped bodies can be obtained, for example, by injection molding, casting, pressing, extruding, drawing or calendering a thermoplastic composition according to the invention.
  • the moldings can be in the foamed state.
  • thermoplastic composition can be produced, for example, by combining the mixture of the individual substances, chemically modified natural resin, protein and, if appropriate, filler or additive (s) in a heatable kneader or an extruder, breaking them up or melting and, if appropriate, shaping them into granules become.
  • Liquid such as plasticizer or vegetable oil, can also be added during processing. To prevent degradation of the proteins, excessive temperatures and excessive shear should be avoided during processing. The processing can take place in a temperature range from 50 to 180 ° C, preferably between 80 and 130 ° C.
  • a suitable method for preventing foaming is degassing during extrusion. To do this, it is sufficient to open the extruder in a heated section and to allow the volatile constituents of the mass, in particular the water, to escape through the high temperature, the vacuum which may be applied and the intensive circulation of the screw.
  • pelleting of the thermoplastic mass is provided prior to extrusion.
  • the mass of beaters are pressed through a die, formed into endless strands and cut to the desired length with knives.
  • thermoplastic composition according to the invention is very easily bindable to hydrophilic (e.g. leather) and hydrophobic (e.g. plastic) materials. Therefore, it is well suited for the back molding of fabrics.
  • thermoplastic composition can be used in many fields of application. Injection molding can be used to produce toys, parts for the garden and the automotive industry, watch straps, fastening straps or clips in fruit and wine growing, as well as screw caps. By extrusion, films or sheets for further thermal Processing in the deep-drawing or pressing process, plates as sealing lips and much more can be produced.
  • thermoplastic composition according to the invention is biodegradable and the moldings produced therefrom can be recycled.
  • thermoplastic composition according to the invention is explained in more detail below with the aid of examples, the difference between the thermoplastic composition according to the invention and the prior art and the advantages of the invention being illustrated in the following examples and comparative examples.
  • the injection molding samples described in the following examples were produced on conventional Engel and Battenfeld injection molding machines.
  • the cylinder temperature was 80-150 ° C, the injection pressure approx. 1000 bar, and a holding pressure adapted to the mixture was used.
  • the tool temperature was 20 ° C. If not explicitly described in the examples, both the drawing in of the granules and the demolding of the injection molded parts were problem-free.
  • the measurements were carried out on a universal testing machine from Frank.
  • the puncture attempt is marked with a conical stamp spherical tip (diameter 10 mm) and a circular support (diameter 40 mm) measured.
  • the penetration work is calculated from the maximum force and the path in the event of breakage.
  • the tensile test is measured on shoulder bars according to DIN 53455.
  • the specific tensile work results from the maximum force, the path at break and the cross-sectional area.
  • the bending strength is determined according to DIN 53452.
  • a mixture of 172.5 g of Dertoline TM SG2 (esterified rosin, softening point 85 ° C), 250 g of Heyplast TM NC 90 (granular natural rubber from Tiefenbacher), 300 g of mica and 327.5 g of wheat gluten is run in a counter-rotating twin-screw extruder at temperatures processed between 50 and 130 ° C.
  • the melt temperature is 125 ° C
  • the melt pressure is 80 bar.
  • the strands obtained are regular and of high strength.
  • the strands are then granulated.
  • the granulate is processed into test bars in an injection molding machine.
  • Table 1 The properties of the moldings obtained are summarized in Table 1.
  • balsam resin Natural rosin, softening point 85 ° C.
  • the strands obtained are irregular and of low strength.
  • the strands cannot be pulled through the water bath and then granulated.
  • the strand fragments are crushed manually for further processing on the injection molding machine.
  • the strand fragments are processed into test bars in an injection molding machine. The pulling behavior is problematic.
  • Table 1 The properties of the moldings obtained are summarized in Table 1.
  • Comparative Examples 1 and 2 produce extremely fragile strands of low strength during extrusion and can therefore not be drawn through the water bath and then granulated.
  • the injection molded parts made from it have low strength and are not elastic.
  • Examples and comparative examples 3-5 describe the influence of the protein on the stickiness of the extrudates and the shrinkage of the injection molded parts.
  • a mixture of 100 g Dercolyte TM M115 (polyterpene from DRT), 100 g PC 10 (powdered natural rubber from Weber and Schaer), 300 g mica and 200 g wheat gluten is in a counter-rotating twin-screw extruder at temperatures between 50 and 130 ° C processed.
  • the melt temperature is 125 ° C, the melt pressure is 85 bar.
  • the strands obtained are regular and of high strength.
  • the strands are then granulated.
  • the granulate is processed into test bars in an injection molding machine.
  • Table 2 The properties of the moldings obtained are summarized in Table 2.
  • Strands are regular, highly elastic, but sticky.
  • the strands can only be granulated using massive talc as a release agent. When stored, the granules clump relatively quickly despite the release agent.
  • the granulate is processed into test bars in an injection molding machine. The pull-in behavior is problematic due to the stickiness of the granules.
  • Table 2 The properties of the moldings obtained are summarized in Table 2.
  • Comparative Example 3 Like Comparative Example 3, except that twice the amount of natural resin is used. The mass pressure is 36 bar. The strands obtained are regular and sticky. The strands cannot be granulated and processed even when using release agents.
  • Examples 6 - 8 describe typical mixtures for the production of protein-containing thermoplastic materials. Proteins of animal as well as vegetable origin can be used. The mixture from example 7 contains an inorganic filler, the mixture in example 8 contains an organic filler.
  • Table 3 shows the values for the penetration work of conditioned samples ("before”; storage at 50% relative humidity and 23 ° C.) and wet samples ("after”; after storage of the previously conditioned samples in water for two hours). This shows the excellent water resistance of these patterns.
  • a mixture of 325 g of Dercolyte TM M115 (polyterpene resin from DRT), 500 g of PC 10 (powdered natural rubber from Weber & Schaer), 600 g of folded leather shavings (12% moisture) and 6 g of calcium stearate is added in a counter-rotating twin-screw extruder Temperatures between 50 and 130 ° C processed. The melt temperature is 130 ° C, the melt pressure is 130 bar. The strands obtained are then granulated. Granules are obtained which are suitable for further processing in injection molding machines, presses, extruders, etc. The granules are processed in an injection molding machine with 14 x 14 cm and 3 mm thick plate tools. The properties of the moldings obtained are summarized in Table 3.
  • thermoplastic compositions according to the invention which have particularly good properties with regard to formability, water resistance, expandability and coloring.
  • a mixture of 800 g Dercolyte TM M115 (polyterpene from DRT), 500 g epoxidized linseed oil and 1500 g leather shavings is processed in a co-rotating twin screw extruder at temperatures between 50 and 130 ° C.
  • the melt temperature is 125 ° C, the melt pressure is 14 bar.
  • the strands obtained are regular and are then granulated.
  • a mixture of 6550 g wheat gluten, 3450 g Dercolyte TM M115, 5000 g Heypiast TM NC 90, 6000 g kaolin, 100 g calcium stearate and 200 g titanium dioxide is in a counter-rotating twin screw extruder at temperatures between 50 and 140 ° C with a throughput of 20 kg / h extruded.
  • 1.13 kg / h of a mixture of glycerol / water (99: 1 part by weight) is pumped in by means of a liquid metering.
  • the melt temperature is 130 ° C, the melt pressure 85 bar. Dense, unexpanded strands with high elasticity are obtained. The strands are granulated and can be processed accordingly.
  • a mixture of 6550 g wheat gluten, 3450 g Dercolyte TM M115, 5000 g Heypiast TM NC 90, 6000 g kaolin, 100 g calcium stearate and 200 g titanium dioxide is in a counter-rotating twin screw extruder at temperatures between 50 and 140 ° C with a throughput of 20 kg / h extruded through a slot die with a lip width of 2 mm.
  • 1.13 kg / h of water are pumped in by means of a liquid metering, corresponding to a water content of 8.2% by weight.
  • the melt temperature is 130 ° C, the
  • a mixture of 260 g Dertoline SG TM 2 (esterified rosin from DRT), 400 g PC 10 (powdered natural rubber from Weber & Schaer), 600 g mica, 800 g soy protein isolate and 45 g Solar Scarlet TM 2G (direct dye from Clariant) is processed in a counter-rotating twin screw extruder at temperatures between 50 and 130 ° C.
  • the melt temperature is 125 ° C, the melt pressure is 40 bar.
  • the strands obtained are then granulated. Red granules suitable for further processing in injection molding machines, presses, extruders, etc. are obtained.
  • Examples 13 to 20 illustrate the outstanding suitability of the thermoplastic composition according to the invention for the production of a wide variety of moldings and its recyclability.
  • Example 6 The granules from Example 6 are melted in a counter-rotating twin-screw extruder and fed to a calender through a slot die (60 mm). Film strips with a thickness of 300 ⁇ m and good strength are obtained.
  • Example 6 The granules from Example 6 are melted in a counter-rotating twin-screw extruder and extruded through a slot die (300 mm) and placed on a conveyor belt. 3 mm thick flexible plates are obtained.
  • Example 6 the granules are processed in an injection molding machine with a 14 x 14 cm and 3 mm thick plate tool.
  • a 14 x 14 cm, 1 mm thick beech wood veneer is inserted into the side of the tool opposite the sprue. The veneer is thus back-injected.
  • the adhesion of the thermoplastic mass to the veneer is excellent.
  • leather stains, plastic films, Lyocell ® (cellulose fiber) tiles and polyester fabric pieces are inserted instead of the veneer. The adhesion to these materials is very good.
  • a mixture of 2.5 kg Dercolyte TM S 135 (polyterpene from DRT) and 4.2 kg Heypiast TM NC 50 is kneaded to a homogeneous mass at a jacket temperature of 145 ° C. in a double Z kneader with a discharge screw.
  • the jacket temperature is reduced to 135 ° C., and 5.5 kg of shaved leather shavings (moisture 12%) are added.
  • a homogeneous thermoplastic mass is formed, to which 1.2 kg of Lyocell ® fibers (15 dtex short cut 6 mm) are added.
  • the fibers distribute themselves in the mass in a short time. It is then pressed out through the discharge screw through a perforated nozzle. These strands are passed through a heated calender and a film strip with a thickness of 1 mm is obtained.
  • Dercolyte TM M115 polyterpene from DRT
  • 6000 g of wheat gluten (moisture 12%) and 60 g of sodium sulfite are added. After a short time, a homogeneous thermoplastic mass is created. It is then pressed out through the discharge screw through a perforated nozzle. The strands are shredded and then pressed into translucent thin foils in a plate press.
  • the film strips from Example 16 are processed into trays in a deep-drawing machine.
  • Example 14 Two 20 x 20 cm plates from Example 14 are heated on each surface with an IR radiator. These surfaces are then placed on top of each other and pressed in a Collin plate press with 10 bar hydraulic pressure. The resulting laminate has an excellent bond.
  • Example 21 The sprues from Example 15 are shredded and added to the granules from Example 1 by injection molding. Complete recycling is possible.
  • Example 21
  • the pellets are mixed with 22 kg of thermoplastic elastomer (Thekaflex TM from Schaefer Polymer) and 80 kg of wood shavings and extruded into a profile in a counter-rotating, conical twin-screw extruder at a melt temperature of 175 ° C.
  • the profile is well formed, the properties of the test specimens cut out are comparable to those from Example 23.
  • a raw material mixture consisting of 65% by weight of shaved leather shavings (moisture 12% by weight), 22% by weight of fully esterified maleinated rosin (Erkamar TM 2102; acid number less than or equal to 20 mg KOH / g), 12% by weight of natural rubber and 1% by weight of calcium stearate is processed into a strand by extrusion without degassing, the strand is then granulated and the granules are injection molded into test bars.
  • Erkamar TM 2102 fully esterified maleinated rosin
  • a raw material mixture consisting of 65% by weight of leather shavings
  • Mass is degassed, processed into a strand, the strand is then granulated and the granules are injection molded into test bars.
  • Table 5 with the comparison of Examples 25 and 26 shows that the expansion can be prevented by degassing and the metering time of the injection molding machine in these examples thus drops from over 9 s to approx. 3 s.
  • Example 26 The addition of polyalcohols and alkalis in Example 26 could improve the digestion of the leather and thus increase the tensile strength.
  • a raw material mixture consisting of 62.5% by weight of shaved leather shavings (moisture 12% by weight), 21.2% by weight of fully esterified, maleated rosin (Erkamar TM 2102), 11.5% by weight of natural rubber 0.9 %
  • shaved leather shavings moisture 12% by weight
  • 21.2% by weight of fully esterified, maleated rosin Erkamar TM 2102
  • 11.5% by weight of natural rubber 0.9 %
  • calcium stearate and 3.9% by weight of glycerol are processed into a strand by extrusion without degassing, the strand is then granulated and the granules are injection molded into test bars.
  • a raw material mixture consisting of 62.5% by weight of folded leather shavings (moisture 12% by weight), 21.2% by weight of fully esterified, maleated
  • Rosin (Erkamar TM 2102), 11.5% by weight of natural rubber, 0.9% by weight of calcium stearate and 3.9% by weight of glycerin is processed into a strand by extrusion with degassing in the second of three zones, the The strand is then granulated and the granules are injection molded into test bars.
  • a raw material mixture consisting of 62.5% by weight of shaved leather shavings (moisture 12% by weight), 21.0% by weight of fully esterified, maleated rosin (Erkamar TM 2102), 11.4% by weight of natural rubber, 0, 95% by weight of calcium stearate, 3.8% by weight of glycerol and 0.95% by weight of KOH are processed into a strand by extrusion without degassing, the strand is granulated and the granules are injection molded into test bars.
  • a raw material mixture consisting of 62.5% by weight of shaved leather shavings (moisture 12% by weight), 21.0% by weight of fully esterified, maleated rosin (Erkamar TM 2102), 11.4% by weight of natural rubber, 0, 95% by weight of calcium stearate, 3.8% by weight of glycerol and 0.95% by weight of KOH is processed into a strand by extrusion with degassing in the second of three zones, the strand is granulated and the granules become Injection molded test rods.

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dermatology (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

L'invention concerne une matière thermoplastique biodégradable présentant une bonne aptitude au démoulage et contenant une protéine et une résine naturelle chimiquement modifiée. Il est possible de produire à partir de cette matière thermoplastique recyclable, notamment par moulage par injection, des corps moulés pour de nombreux domaines d'application.
PCT/EP2001/008826 2000-08-01 2001-07-31 Matiere thermoplastique a base de resine naturelle Ceased WO2002010283A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT0917801A AT412646B (de) 2000-08-01 2001-07-31 Thermoplastische masse auf naturharzbasis
AU2001291706A AU2001291706A1 (en) 2000-08-01 2001-07-31 Natural resin based thermoplastic material
DE10193049T DE10193049D2 (de) 2000-08-01 2001-07-31 Thermoplastische Masse auf Naturharzbasis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1340/2000 2000-08-01
AT13402000A AT410212B (de) 2000-08-01 2000-08-01 Thermoplastische masse auf naturharzbasis

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WO2002010283A1 true WO2002010283A1 (fr) 2002-02-07

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PCT/EP2001/008826 Ceased WO2002010283A1 (fr) 2000-08-01 2001-07-31 Matiere thermoplastique a base de resine naturelle

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AT (1) AT410212B (fr)
AU (1) AU2001291706A1 (fr)
DE (1) DE10193049D2 (fr)
WO (1) WO2002010283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016119555A1 (fr) * 2015-01-30 2016-08-04 成都新柯力化工科技有限公司 Élastomère d'amidon thermoplastique et son procédé de préparation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675920B1 (fr) * 1992-12-19 1998-03-11 METRAPLAST H. Jung GmbH Utilisation d'une composition pour la fabrication de materiaux a moulage par injection
EP0712428B1 (fr) * 1993-07-29 1998-03-18 Markus Dipl.-Ing. Rettenbacher Corps moule constitue par ou renfermant un materiau ne nuisant pas a l'environnement, son procede de fabrication et son application

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675920B1 (fr) * 1992-12-19 1998-03-11 METRAPLAST H. Jung GmbH Utilisation d'une composition pour la fabrication de materiaux a moulage par injection
EP0712428B1 (fr) * 1993-07-29 1998-03-18 Markus Dipl.-Ing. Rettenbacher Corps moule constitue par ou renfermant un materiau ne nuisant pas a l'environnement, son procede de fabrication et son application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016119555A1 (fr) * 2015-01-30 2016-08-04 成都新柯力化工科技有限公司 Élastomère d'amidon thermoplastique et son procédé de préparation

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DE10193049D2 (de) 2003-07-03
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AU2001291706A1 (en) 2002-02-13

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