WO1996015173A1 - Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper - Google Patents
Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper Download PDFInfo
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- WO1996015173A1 WO1996015173A1 PCT/EP1995/002491 EP9502491W WO9615173A1 WO 1996015173 A1 WO1996015173 A1 WO 1996015173A1 EP 9502491 W EP9502491 W EP 9502491W WO 9615173 A1 WO9615173 A1 WO 9615173A1
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- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
- C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
- C08G18/4216—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols from mixtures or combinations of aromatic dicarboxylic acids and aliphatic dicarboxylic acids and dialcohols
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
- C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
- C08G18/4219—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols from aromatic dicarboxylic acids and dialcohols in combination with polycarboxylic acids and/or polyhydroxy compounds which are at least trifunctional
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/428—Lactides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4286—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones prepared from a combination of hydroxycarboxylic acids and/or lactones with polycarboxylic acids or ester forming derivatives thereof and polyhydroxy compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
- C08G18/4676—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/60—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/52—Mulches
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2230/00—Compositions for preparing biodegradable polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S525/938—Polymer degradation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31547—Of polyisocyanurate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
- Y10T428/31794—Of cross-linked polyester
Definitions
- Biodegradable polymers processes for their production and their use for the production of biodegradable moldings
- the present invention relates to biodegradable polyester P1, obtainable by reaction of a mixture consisting essentially of
- (a2) a dihydroxy compound selected from the group consisting of C 2 * -C 6 alkanediols and Cs-Cio-cycloalkanediols,
- the molar ratio of (al) to (a2) is selected in the range from 0.4: 1 to 1.5: 1, with the proviso that the polyester P1 has a molecular weight (M n ) in the range from 5000 to 50,000 g / mol, a viscosity number in the range from 30 to 350 g / ml (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5% by weight polyester PI at one temperature of 25 ° C) and have a melting point in the range of 50 to 170 ° C, and with the further proviso that from 0.01 to 5 mol%, based on the molar amount of component (al) used, a Ver ⁇ uses bond D with at least three groups capable of ester formation for the production of the polyester P1.
- the invention relates to polymers and biodegradable thermoplastic molding compositions according to subclaims, processes for their production, their use for producing biodegradable molded bodies and adhesives, biodegradable molded bodies, foams and blends with starch, obtainable from the polymers or molding compositions according to the invention.
- Polymers which are biodegradable, ie which decompose in a reasonable and detectable period of time under environmental influences, have been known for some time. The degradation usually takes place hydrolytically and / or oxidatively, but for the most part due to the action of microorganisms such as bacteria, yeasts, fungi and algae.
- Y.Tokiwa and T. Suzuki describe the enzymatic degradation of aliphatic polyesters, for example also polyesters based on succinic acid and aliphatic diols.
- EP-A 565,235 describes aliphatic copolyesters containing [- H-C (0) 0 -] - groups ("urethane units").
- the copolyesters of EP-A 565,235 are obtained by reacting a prepoly ester - obtained by reacting essentially succinic acid and an aliphatic diol - with a diisocyanate, preferably hexamethylene diisocyanate.
- the reaction with the diisocyanate is necessary according to EP-A 565,235, since the polycondensation alone gives only polymers with molecular weights which do not have satisfactory mechanical properties.
- succinic acid or its ester derivatives for the production of the copolyesters is of decisive disadvantage because succinic acid or its derivatives are expensive and not available in sufficient quantities on the market.
- succinic acid as the only acid component, the polyesters produced from it are broken down extremely slowly.
- copolyesters based on predominantly aromatic dicarboxylic acids and aliphatic diols are known, at least 85 mol% of the polyester diol residue consisting of a terephthalic acid residue. Modifications such as the incorporation of up to 2.5 mol% of metal salts of 5-sulfoisophthalic acid or short-chain ether diol segments such as diethylene glycol increase the hydrophilicity of the copolyester and reduce the crystallinity. According to WO 92/13019, this is intended to enable biodegradation of the copolyesters. A disadvantage of these copolyesters, however, is that biodegradation by microorganisms has not been demonstrated, but rather only the behavior towards hydrolysis in boiling water or in some cases also with water at 60 ° C. has been carried out.
- Polyesters which are largely composed of aromatic dicarboxylic acid units and aliphatic diols, such as PET (polyethylene terephthalate) and PBT (polybutylene terephthalate), are not enzymatically degradable. This applies also for copolyesters containing blocks composed of aromatic dicarboxylic acid units and aliphatic diols.
- the object of the present invention was therefore biological, i.e. by microorganisms to provide degradable polymers which do not have these disadvantages.
- the polymers according to the invention should be producible from known and inexpensive monomer units and should be water-insoluble.
- the biological degradation by microorganisms should not be achieved at the expense of the mechanical properties, in order not to limit the number of application areas.
- the polyesters P1 according to the invention are characterized by a molecular weight (M n ) in the range from 5,000 to 50,000, preferably from 6,000 to 45,000, particularly preferably from 8,000 to 35,000 g / mol, a viscosity number in the range from 30 to 350, preferably from 50 to 300 g / ml (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5% by weight of polyester PI at a temperature of 25 ° C.) and a melting point in the range from 50 to 170, preferably from 60 to 160 ° C.
- the polyester P1 is obtained according to the invention by using a mixture consisting essentially of (al) a mixture consisting essentially of
- Adipic acid and dimethyl adipate are preferred Adipic acid and dimethyl adipate, or mixtures thereof,
- terephthalic acid or ester-forming derivatives thereof in particular the di-Ci-C ⁇ alkyl esters such as dimethyl, diethyl, dipropyl, dibutyl, dipentyl or dihexyl terephthalate, or mixtures thereof, preferably terephthalic acid and dimethyl terephthalate, or mixtures thereof, and
- 0 to 5 preferably from 0 to 3, particularly preferably from 0.1 to 2 mol% of a compound containing sulfonate groups,
- (a2) a dihydroxy compound selected from the group consisting of C 2 -C 6 -alkanediols and Cs-Cio-cycloalkanediols,
- molar ratio of (al) to (a2) is selected in the range from 0.4: 1 to 1.5: 1, preferably from 0.6: 1 to 1.1: 1.
- the sulfonate group-containing compound used is usually an alkali metal or alkaline earth metal salt of a sulfonate group-containing dicarboxylic acid or its ester-forming derivatives, preferably alkali metal salts of 5-sulphoisophthalic acid or mixtures thereof, particularly preferably the sodium salt.
- the dihydroxy compounds (a2) used according to the invention are a compound selected from the group consisting of C 2 -C 6 alkanediols and Cs-Cio-cycloalkanediols, such as ethylene glycol, 1,2-, 1,3-propanediol, 1,2 -, 1,4-butanediol, 1, 5-pentanediol or
- 1,6-hexanediol in particular ethylene glycol, 1,3-propanediol and 1,4-butanediol, cyclopentanediol, 1,4-cyclohexanediol, 1,2-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, and mixtures thereof .
- from 0.01 to 5, preferably from 0.05 to 4 mol%, based on component " (al) at least one compound D having at least three groups capable of ester formation is used.
- the compounds D preferably contain three to ten functional groups which are capable of forming ester bonds. Particularly preferred compounds D have three to six functional groups of this type in the molecule, in particular three to six hydroxyl groups and / or carboxyl groups. Examples include:
- Trimethylolpropane trimethylolethane
- Pentaerythritol
- the melt viscosity can be changed in the desired manner, the impact strength increased and the crystallinity of the polymers or molding compositions according to the invention reduced.
- the production of the biodegradable polyester P1 is known in principle (Sorensen and Campbell, "Preparative Methods of Polymer Chemistry", Interscience Publishers, Inc., New York, 1961, pages 111 to 127, * Encyl. Of Polym. Science and Eng ., Vol. 12, 2nd ed., John Wiley & Sons, 1988, pp. 1 to 75; Kuns s off-Handbuch, volume 3/1, Carl Hanser Verlag, Kunststoff, 1992, pp. 15 to 23 (production of polyesters); WO 92/13019; EP-A 568,593; EP-A 565,235; EP-A 28,687), so that further details are unnecessary.
- reaction of dimethyl esters of component a1 with component a2 at temperatures in the range from 160 to 230 ° C. in the melt at atmospheric pressure can advantageously be carried out under an inert gas atmosphere.
- a molar excess of component a2, based on component al, is advantageously used in the production of the biodegradable polyester P1, for example up to 2 1/2 times, preferably up to 1.67 times.
- the biodegradable polyester P1 is produced with the addition of suitable, known per se
- Catalysts such as metal compounds based on the following elements such as Ti, Ge, Zn, Fe, Mn, Co, Zr, V, Ir, La, Ce, Li and Ca, preferably organometallic compounds based on these metals such as salts organic acids, alkoxides, acetylacetonates and the like, particularly preferably based on zinc, tin and titanium.
- component (a1) When using dicarboxylic acids or their anhydrides as component (a1), their esterification with component (a2) can take place before, simultaneously or after the transesterification.
- component (a2) When using dicarboxylic acids or their anhydrides as component (a1), their esterification with component (a2) can take place before, simultaneously or after the transesterification.
- the process described in DE-A 23 26 026 is used for the production of modified polyalkylene terephthalates.
- the polycondensation to the desired molecular weight is carried out under reduced pressure or in an inert gas stream, for example from nitrogen, with further heating to a temperature in the range from 180 to 260 ° C.
- stabilizers can also be added in this process step if desired.
- Such stabilizers are, for example, those in EP-A 13 461, US 4,328,049 or in B. Fortunato et al., Polymer Vol. 35, No. 18, pp. 4006 to 4010, 1994, Butterworth-Heine ann Ltd., described phosphorus compounds. Some of these can also act as deactivators of the catalysts described above.
- organophosphite examples include: organophosphite, phosphonous acid and phosphorous acid.
- compounds which only act as stabilizers are: trialkyl phosphites, triphenyl phosphite, trialkyl phosphates, tri- phenyl phosphate and tocopherol (vitamin E; available, for example, as Uvinul ® 2003AO (BASF)).
- the weight ratio of catalyst to biodegradable polyester P1 is usually in the range from 0.01: 100 to 3: 100, preferably from 0.05: 100 to 2: 100, it also being possible to use smaller amounts, such as 0.0001, for highly active titanium compounds : 100.
- the catalyst can be used right at the beginning of the reaction, immediately shortly before the excess diol is separated off or, if desired, also distributed in several portions during the production of the biodegradable polyester P1. If desired, various catalysts or mixtures thereof can also be used.
- the biodegradable polyesters P2 according to the invention are characterized by a molecular weight (M n ) in the range from 5000 to 80,000, preferably from 6,000 to 45,000, particularly preferably from 10,000 to 40,000 g / mol, a viscosity number in the range from 30 to 450 , preferably from 50 to 400 g / ml (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5% by weight polyester P2 at a temperature of 25 ° C.) and a melting point in the range from 50 to 235, preferably from 60 to 235 ° C.
- M n molecular weight
- the biodegradable polyesters P2 are obtained by reacting a mixture consisting essentially of (bl) a mixture consisting essentially of
- the molar ratio of (bl) to (b2) being selected in the range from 0.4: 1 to 1.5: 1, preferably from 0.6: 1 to 1.1: 1,
- component (b3) from 0.01 to 100, preferably from 0.1 to 80% by weight, based on component (b1), a hydroxycarboxylic acid B1, and
- hydroxycarboxylic acid B1 is defined by the formulas Ia or Ib
- p is an integer from 1 to 1500, preferably from 1 to 1000 and r is 1, 2, 3 or 4, preferably 1 and 2
- G represents a radical which is selected from the group consisting of phenylene, - (CH 2 ) n -> where n is an integer of 1, 2, 3, 4 or 5, preferably 1 and 5, -C (R) H- and -C (R) HCH 2 , where R represents methyl or ethyl.
- the biodegradable polyesters P2 are expediently prepared analogously to the preparation of the polyester P1, it being possible for the hydroxycarboxylic acid B1 to be added both at the start of the reaction and after the esterification or transesterification stage. 5
- the hydroxycarbonic acid B1 used is: glycolic acid, D-, L-, D, L-lactic acid, 6-hydroxyhexanoic acid, their cyclic derivatives such as glycolide (1,4-dioxane-2,5-dione ), D-, L-dilactide (3, 6-dimethyl-l, 4-
- polyester P2 the low molecular weight and cyclic derivatives thereof.
- the biodegradable polyesters Ql according to the invention are characterized by a molecular weight (M n ) in the range from
- the polyester Ql are obtained by reacting a mixture consisting essentially of
- component (c3) 0 to 5, preferably from 0 ' to 4 mol%, based on component (a1) from the production of PI and / or PWD, compound D.
- the biodegradable polyester PWD is generally obtainable by reacting essentially the components (a1) and (a2), the molar ratio of (a1) to (a2) being in the range from 0.4: 1 to 1.5 : 1, preferably from 0.6: 1 to 1.25: 1, with which
- the polyester PWD has a molecular weight (M n ) in the range from 5000 to 50,000, preferably from 6000 to 35,000 g / mol, a viscosity number in the range from 30 to 350, preferably from 96/15173 PCI7-EP95 / 02491
- the reaction of the polyester P1 and / or PWD with the hydroxycarboxylic acid B1, if desired in the presence of the compound D, is preferably carried out in the melt at temperatures in the range from 120 to 260 ° C. under an inert gas atmosphere, if desired also under reduced pressure. You can work batchwise or continuously, for example in stirred tanks or (reaction) extruders.
- the reaction can be accelerated by adding known transesterification catalysts (see those described above in the production of the polyester P1).
- a preferred embodiment relates to polyester Q1 with block structures formed from the components P1 and B1: when cyclic derivatives of B1 (compounds Ib) are used, when reacting with the biodegradable polyester P1 by a so-called “ring-opening polymerization", triggered by the end groups of P1, polyester Q1 with block structures can be obtained in a manner known per se (for “ring-opening polymerization” see Encycl. of Polymer. Science and Eng. Vol. 12, 2nd Ed., John Wiley & Sons, 1988, pp. 36 to 41). If desired, the reaction can be carried out with the addition of customary catalysts such as the transesterification catalysts already described above, tin octanoate is particularly preferred (see also Encycl. Of Polymer. Science and Eng. Vol. 12, 2nd ed. , John Wiley & Sons, 1988, pp. 36 to 41).
- the desired block structures can be obtained by reaction with the polyesters P1 in stirred tanks or extruders by the choice of reaction conditions, such as temperature, residence time, addition of Transesterification catalysts such as those mentioned above can be obtained.
- reaction conditions such as temperature, residence time
- Transesterification catalysts such as those mentioned above can be obtained.
- From J. of Appl. Polym. Sei., Vol. 32, pp. 6191 to 6207, John Wiley & Sons, 1986 and from Makromol. Chemie, Vol. 136, pp. 311 to 313, 1970 discloses that block copolymers and then random copolymers can first be obtained from polyesters in the melt from a blend by the reaction of transesterification reactions. 96/15173 PC17-EP95.02491
- the biodegradable polyesters Q2 according to the invention are characterized by a molecular weight (M n ) in the range from 6000 to 60,000, preferably from 8,000 to 50,000, particularly preferably from 10,000 to 40,000 g / mol, by a viscosity number in the range from 30 to 350, preferably from 50 to 300 g / ml (measured in o-dichlorobenzene / phenol (50/50% by weight) at a concentration of 0.5% by weight polyester Q2 at a temperature of 25 ° C.), and a melting point in the range from 50 to 170 ° C, preferably from 60 to 160 ° C.
- M n molecular weight
- the polyesters Q2 are obtained by reacting a mixture consisting essentially of
- diisocyanate Cl all customary and commercially available diisocyanates can be used as diisocyanate Cl.
- a diisocyanate which is selected from the group consisting of tolylene-2,4-diisocyanate, toluene-2,6-diisocyanate, 4,4'- and 2,4'-diphenylmethane diisocyanate, naphthylene -1,5-diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate and methylene bis (4-isocyanatocyclohexane), particularly preferably hexamethylene diisocyanate.
- trifunctional isocyanate compounds which may contain isocyanurate and / or biuret groups with a functionality not less than three, or to partially replace the diisocyanate compounds C1 with tri- or polyisocyanates.
- the reaction of the polyester P1 and / or PWD with the diisocyanate C1 is preferably carried out in the melt, care being taken to ensure that there are as few side reactions as possible which can lead to crosslinking or gel formation.
- the reaction is usually carried out at temperatures in the range from 130 to 240, preferably from 140 to 220 ° C. by, the addition of the diisocyanate advantageously taking place in several portions or continuously.
- the reaction of the polyester Pl and / or PWD with the diisocyanate Cl can also be carried out in the presence of common inert solvents such as toluene, methyl ethyl ketone or dimethylformamide (“DMF”) or mixtures thereof, the reaction temperature generally being in the range from 80 to 200, preferably from 90 to 150 ° C.
- common inert solvents such as toluene, methyl ethyl ketone or dimethylformamide (“DMF”) or mixtures thereof
- the reaction with the diisocyanate C1 can be carried out batchwise or continuously, for example in stirred tanks, reaction extruders or via mixing heads.
- Examples include: tert. Amines such as triethylamine, dimethylcyclohexylamine, N-methylmorpholine, N, N'-dimethylpiperazine, diazabicyclo- [2.2.2-] octane and the like, and in particular organic metal compounds such as titanium compounds, iron compounds, tin compounds, e.g.
- the biodegradable polymers T1 according to the invention are characterized by a molecular weight (M n ) in the range from 10,000 to 100,000, preferably from 11,000 to 80,000, preferably from 11,000 to 50,000 g / mol, a viscosity number in the range from 30 to 450, preferably from 50 to 400 g / ml (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5 wt .-% polymer Tl at a temperature of 25 ° C) and a melting point in Range from 50 to 235, preferably from 60 to 235 ° C.
- M n molecular weight in the range from 10,000 to 100,000, preferably from 11,000 to 80,000, preferably from 11,000 to 50,000 g / mol
- a viscosity number in the range from 30 to 450 preferably from 50 to 400 g / ml (measured in o-dichlorobenzene /
- the biodegradable polymers T1 are obtained by using a polyester C1 according to claim 3
- component (e2) 0 to 5, preferably from 0 to 4 mol%, based on component (a1) from the production of PI and / or PWD and polyester Q1, brings compound D to reaction.
- a chain extension is usually achieved in this way, the polymer chains obtained preferably having a block structure.
- the reaction is usually carried out analogously to the preparation of the polyester Q2.
- the biodegradable polymers T2 according to the invention are characterized by a molecular weight (M n ) in the range from 10,000 to 100,000, preferably from 11,000 to 80,000, particularly preferably from 11,000 to 50,000 g / mol, with a viscosity number in the range from 30 to 450, preferably from 50 to 400 g / ml (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5% by weight of polymer T2 at a temperature of 25 ° C.) and one Melting point in the range from 50 to 235, preferably from 60 to 235 ° C.
- M n molecular weight
- the biodegradable polymers T2 are obtained by reacting the polyester Q2 with
- the biodegradable polymers T3 according to the invention are characterized by a molecular weight (M n ) in the range of 10,000
- the biodegradable polymers T3 are obtained by (gl) polyester P2, or (g2) a mixture consisting essentially of polyester P1 and 0.01 to 50, preferably 20, 0.1 to 40% by weight on the polyester P1, hydroxy carboxylic acid B1, or (g3) a mixture consisting essentially of polyesters P1, which have a different composition from one another, with
- polyester P2 is used, the repeating units of which are randomly distributed in the molecule.
- polyester P2 can also be used, the polymer chains of which have block structures.
- Such polyesters P2 are generally accessible by appropriate selection, in particular of the molecular weight, of the hydroxycarboxylic acid B1. According to previous observations, this is generally done when using a high molecular weight
- the reaction may be in solution with the conduct in the preparation of the polymers Tl from the polyesters Ql and solvents mentioned diisocyanates Cl. 5
- the biodegradable thermoplastic molding compositions T4 are obtained by, in a manner known per se, preferably with the addition of customary additives such as stabilizers, processing aids, fillers, etc. (see J. of Appl. Polym. Sc, Vol. 32 , Pp. 6191 to 6207, John Wiley & Sons, 1986; WO 92/0441; EP 515,203; KunststoffStoff-Handbuch, Vol. 3/1, Carl Hanser Verlag Kunststoff, 1992, pp. 24 to 28)
- customary additives such as stabilizers, processing aids, fillers, etc.
- high molecular weight hydroxycarboxylic acids B1 such as polycaprolactone or polylactide or polyglycolide or polyhydroxyalkanoates such as 3-polyhydroxybutyric acid with a molecular weight (M ⁇ ) in the range from 10,000 to 25 150,000, preferably from 10,000 to 100,000 g / mol, or a mixture from 3-polyhydroxybutyric acid and polyhydroxyvaleric acid.
- M ⁇ molecular weight
- a further preferred embodiment relates to a blend obtainable by mixing from 99.5 to 40, preferably from 99.5 to 60,% by weight of polyester PI according to claim 1 or polyester Q2 according to claim 4 or polyester PWD according to claim 3 and from 0.5 to 60, preferably from 0.5 to 40% by weight of a high molecular weight
- hydroxycarboxylic acid B1 particularly preferably polylactide, polyglycolide, 3-polyhydroxybutyric acid and polycaprolactone. Such blends can be completely biodegraded and exhibit According to the previous observations, very good mechanical properties.
- thermoplastic molding compositions T4 are preferably obtained by observing short mixing times, for example when the mixing is carried out in an extruder.
- mixing parameters in particular the mixing time and, if desired, the use of deactivators, molding compositions are also accessible which predominantly have blend structures, i.e. the mixing process can be controlled in such a way that transesterification reactions can also take place at least in part.
- 0 to 50, preferably 0 to 30 mol% of the adipic acid, or its ester-forming derivatives or mixtures thereof can be achieved by means of at least one other aliphatic C -C 1-0 or cycloaliphatic Cs-Cio-dicarboxylic acid or Dimer fatty acid such as succinic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid or sebacic acid or an ester derivative such as its di-Ci-Ce-alkyl ester or its anhydrides such as succinic anhydride, or their mixtures, replace, preferably succinic acid, succinic anhydride, sebacic acid and dimeric acid Di-Ci-C ⁇ -alkyl esters such as dimethyl, diethlyl, di-n-propyl, diisobutyl, di-n-pentyl, dineopentyl, di-n-hexyl esters thereof, especially dimethyl succinic acid, or its este
- a particularly preferred embodiment relates to the use as component (a1) of the mixture of succinic acid, adipic acid and glutaric acid described in EP-A 7445 as well as their Ci-Ce alkyl esters, in particular the dimethyl ester and diisobutyl ester.
- aromatic dicarboxylic acid such as isophthalic acid, phthalic acid or 2,6-naphthalenedicarboxylic acid, preferably isophthalic acid, or an ester derivative such as a di-Ci-C ⁇ alkyl ester, especially the dimethyl ester, or mixtures thereof.
- the different polymers according to the invention can be worked up in the customary manner by isolating the polymers, or, in particular if the polyesters P1, P2, Q1 and Q2 are to be reacted further, by not isolating the polymers but processing them immediately .
- the polymers according to the invention can be applied to coating substrates by rolling, brushing, spraying or casting.
- Preferred coating substrates are those that are compostable or rot like moldings made of paper, cellulose or starch.
- the polymers according to the invention can also be used for the production of moldings which are compostable.
- shaped bodies disposable items such as dishes, cutlery, garbage bags, films for agriculture for the early harvest, packaging films and containers for growing plants.
- the polymers according to the invention can be spun into threads in a manner known per se.
- the threads can be drawn by customary methods, drawing twists, drawing bobbins, drawing warping, drawing finishing and drawing texturing.
- the stretching to so-called plain yarn can take place in one and the same operation (fully drawn yarn or fully oriented yarn), or in a separate operation. Stretch warping, stretch finishing and stretch texturing are generally carried out in a separate process from spinning.
- the threads can be further processed into fibers in a manner known per se. Flat structures are then accessible from the fibers by weaving, knitting or knitting.
- the moldings, coating compositions and threads etc. described above can also contain fillers which can be incorporated during the polymerization process in any stage or subsequently, for example into a melt of the polymers according to the invention.
- fillers Based on the polymers according to the invention, from 0 to 80% by weight of fillers can be added. Suitable fillers are, for example, carbon black, starch, lignin powder, cellulose fibers, natural fibers such as sisal and hemp, iron oxides, clay minerals, ores, calcium carbonate, calcium sulfate, barium sulfate and titanium dioxide.
- the fillers can also include stabilizers such as tocopherol (vitamin E), organic phosphorus compounds, mono-, di- and polyphenols, hydroquinones, diarylamines, thioethers, UV stabilizers, nucleating agents such as talc and lubricants Mold release agents based on hydrocarbons, fatty alcohols, higher carboxylic acids, metal salts of higher carboxylic acids such as calcium and zinc stearate, and montan waxes.
- stabilizers such as tocopherol (vitamin E), organic phosphorus compounds, mono-, di- and polyphenols, hydroquinones, diarylamines, thioethers, UV stabilizers, nucleating agents such as talc and lubricants Mold release agents based on hydrocarbons, fatty alcohols, higher carboxylic acids, metal salts of higher carboxylic acids such as calcium and zinc stearate, and montan waxes.
- the polymers according to the invention can also be colored as desired by adding organic or inorganic dyes.
- the dyes can also be regarded as fillers.
- a particular field of application of the polymers according to the invention relates to their use as a compostable film or a compostable coating as the outer layer of diapers.
- the outer position of the diapers effectively prevents the passage of liquids which are absorbed by the fluff and superabsorbers, preferably biodegradable superabsorbers, for example based on crosslinked polyacrylic acid or crosslinked polyacrylamide, in the inside of the diaper.
- a fiber fleece made of a cellulose material can be used as the inner layer of the diaper.
- the outer layer of the diapers described is biodegradable and therefore postable. It disintegrates during composting, so that the entire diaper rots, while diapers provided with an outer layer made of, for example, polyethylene cannot be composted without prior comminution or costly separation of the polyethylene film.
- polymers and molding compositions according to the invention relate to the production of adhesives in a manner known per se (see, for example, Encycl. Of Polym. Sc. And Eng. Vol. 1, "Adhesive Compositions", pp. 547 to 577).
- the polymers and molding compositions according to the invention can also be processed with suitable tackifying thermoplastic resins, preferably natural resins, according to the methods described there.
- suitable tackifying thermoplastic resins preferably natural resins
- the polymers and molding compositions according to the invention can also be further processed into solvent-free adhesive systems such as hot-melt films.
- Another preferred area of application relates to the production of completely degradable blends with starch mixtures (preferably with thermoplastic starch as described in WO 90/05161) analogously to the process described in DE-A 42 37 535.
- the polymers according to the invention can be mixed both as granules and as a polymer melt with starch mixtures, the mixing as a polymer melt being preferred, since one process step (granulation) can be saved (direct assembly).
- the polymers and thermoplastic molding compositions according to the invention can be based on their hydrophobic nature, their mechanical properties, their complete biodegradability, their good compatibility with thermoplastic starch and, last but not least because of its cheap raw material base, use it advantageously as a synthetic blend component.
- a further use of the polymers and molding compositions according to the invention relates to the production of foams, the procedure generally being known (see EP-A 372,846; Handbook of Polymeric foams and Foam Technology, Hanser Publisher, Kunststoff, 1991, Pp. 375 to 408).
- the polymer or molding composition according to the invention is first melted, if desired with addition of up to 5% by weight of compound D, preferably pyromellitic dianhydride and trimellitic anhydride, then a blowing agent is added and the mixture thus obtained is mixed Extrusion exposed to reduced pressure, causing foaming.
- the advantages of the polymers according to the invention over known biodegradable polymers lie in a cheap raw material base with readily available starting materials such as adipic acid, terephthalic acid and common diols, and in interesting mechanical properties by combining "hard” (through the aromatic dicarboxylic acids such as terephthalic acid) and “soft” (due to the aliphatic dicarboxylic acids, such as adipic acid) segments in the polymer chain and the variation of the applications by simple modifications, in a good degradation behavior by microorganisms, especially in the compost and in the soil, and in a certain resistance against microorganisms in aqueous systems at room temperature, which is particularly advantageous for many areas of application.
- the statistical attack of the aromatic dicarboxylic acids of the components (a1) in various polymers enables the biological attack and thus achieves the desired biodegradability.
- both biodegradation behavior and mechanical properties can be optimized for the respective application by means of tailored formulations. Furthermore, depending on the production process, it is advantageously possible to obtain polymers with predominantly randomly distributed monomer units, polymers with predominantly block structures and polymers with a predominantly blend structure or blends.
- the polymers were cooled in a mill with liquid nitrogen or dry ice and finely ground (the larger the surface of the ground material, the faster the enzymatic breakdown).
- 30 mg of finely ground polymer powder and 2 ml of a 20 mol aqueous K HP0 4 / KH 2 P0 buffer solution (pH value: 7.0) were placed in an Eppendorf reagent vessel (2 ml) and 3 h Equilibrated on a swivel at 37 ° C.
- 100 units of lipase from either Rhizopus arrhzus, Rhizopus delemar or Pseudomonas pl. added and incubated for 16 h at 37 ° C with stirring (250 rpm) on the swivel. After that, the reaction mixture was passed through a Millipore membrane
- DOC dissolved organic carbon
- the ⁇ DOC values determined can be regarded as a measure of the enzymatic degradability of the samples. They are shown respectively in comparison with a measurement with powder of polycaprolactone ® Tone P 787 (Union Carbide). When evaluating, it must be ensured that the data are not absolutely quantifiable. The relationship between the surface of the ground material and the speed of the enzymatic degradation has already been mentioned above. Furthermore, the enzyme activities can fluctuate.
- the permeability and permeability to oxygen was determined according to DIN 53380, that to water vapor according to DIN 53122.
- hydroxyl number OH number
- acid number SZ
- test was repeated without test substance (blank sample).
- VI consumption of the standard solution with test substance in ml
- V2 consumption of the standard solution without test substance in ml
- Acetic anhydride p.A. (Merck, Art. 42) Pyridine p.A. (Riedel de Haen, Art.No. 33638) Acetic acid p.A. (Merck, Item No. 1,00063) Acetylation reagent: 810 ml pyridine, 100 ml acetic anhydride and 9 ml
- test substance Approximately 1 to 1.5 g of test substance were weighed exactly and mixed with 10 ml of toluene and 10 ml of pyridine and then heated to 95 ° C. After dissolving, the mixture was cooled to room temperature, 5 ml of water and 50 ml of THF were added, and 0.1 N ethanol. Titrated KOH solution.
- VI consumption of the measurement solution with test substance in ml
- V2 consumption of the measurement solution without test substance in ml.
- PCL Polycaprolacton® Tone P 787 (Union Carbide)
- SZ acid number TBOT: tetrabutyl orthotitanate
- VZ viscosity number (measured in o-dichlorobenzene / phenol (weight ratio 50/50) at a concentration of 0.5% by weight of polymer at a temperature of 25 ° C.
- T m : 'melting temperature * temperature at which a 5 maximum endothermic heat flow occurs (extremum of the
- T g glass transition temperature (midpoint of the DSC curves)
- the DSC measurements were carried out using a DuCont 912 thermal analyzer 10 990.
- the temperature and enthalpy calibration was carried out in the usual way.
- the sample weight was typically 13 mg.
- Heating and cooling rates - unless otherwise noted - were 20 K / min.
- the samples were measured under the following conditions: 1. heating run on samples in the delivery state, 2. rapid cooling from the melt, 3. heating run on samples cooled from the melt (samples from 2).
- the second DSC runs served to enable a comparison between the different samples after impressing a uniform thermal history. 20th
- Example 2 Analogously to Example 2, 372.4 g of the polymer from Example 1, 215.6 g DMT, 340 g 1.4 butanediol, 5.8 g 1,2-4-benzenetricarboxylic acid 1,2-anhydride, 1.0 g TBOT and 0.4 g of a 50% strength by weight aqueous solution of phosphorous acid, the addition of 1,2,4-benzenetricarboxylic acid 1,2-anhydride being carried out at the beginning of the reaction.
- Example 3 Analogously to Example 3, 360.4 g of the polymer from Example 1, 221.4 g DMT, 340 g 1.4 butanediol, 11.5 g 1,2, -benzenetricarbon- 5 acid-1, 2-anhydride, 1, 0 g of TBOT and 0.4 g of a 50% strength by weight aqueous solution of phosphorous acid are reacted.
- Example 3 Analogously to Example 3, 360 g of the polymer from Example 1, 233 g DMT, 340 g 1, butanediol, 4.1 g of a mixture of 85 to 92% by weight of pentaerythritol and 8 to 15% by weight of dipentaerythritol, 1 , 0 g of TBOT, and 0.4 g of a 50% by weight aqueous solution of phosphorous acid.
- Example 30 Analogously to Example 3, 360 g of the polymer from Example 1, 340 g of 1-butanediol, 8 g of sulfoisophthalic acid sodium salt, 0.65 g of PMDA, 1.0 g of TBOT, and 0.4 g of a 50% by weight aqueous solution of phosphorous acid, with the addition of the sulfosisthalic acid sodium salt already at the beginning of the reaction.
- T m 109.5 ° C (DSC, delivery status)
- T g -28 ° C (DSC, delivery status)
- Example 1 1.81 kg of the polymer of Example 1, 1.17 kg of DMT, 1.7 kg of 1-butanediol, 4.7 g of TBOT, 6.6 g of PMDA, and 1.9 g of 50% strength aqueous phosphorous acid were analogous converted to Example 2, the melt being cooled to 200 ° C. while stirring and under a nitrogen atmosphere. Then 15 g of hexamethylene diisocyanate were added in 4 portions over the course of 40 minutes. The polyester could be granulated and processed into blown films.
- a blend of starch and the polyester from Example 13 was produced in a co-rotating twin-screw extruder (L / D ratio: 37) with a throughput of approx. 30 kg / h
- the native potato starch was plasticized with glycerin and the destructured, thermoplastic starch obtained was degassed.
- a starch blend was obtained by admixing the polymer from Example 13 as granules via a co-rotating twin-screw extruder (L / D ratio: 21), which could be granulated and processed into blown films.
- composition starch blend :
- Loxiol G 31 liquid neutral fatty acid ester, pour point
- a blend of starch and the polymer from example 15 was produced in a co-rotating twin-screw extruder (L / D ratio: 37) with a throughput of approximately 30 kg / h at 50-220 ° C.
- the native potato starch was plasticized with the glycerin-MSA mixture and the destructured, thermoplastic starch obtained was degassed.
- a starch blend was obtained which could be granulated and processed into blown films.
- composition starch blend :
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Abstract
Description
Claims
Priority Applications (18)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9509685A BR9509685A (pt) | 1994-11-15 | 1995-06-27 | Poliésteres e polímeros biodegradáveis composições de termoplásticos moldáveis biodegradáveis processos para a preparação dos poliésteres e de polímeros biodegradáveis e das composições de termoplásticos moldáveis biodegradáveis uso dos polímeros biodegradáveis plásticos moldáveis compostáveis adesivos misturas biodegradáveis processo para a produção de misturas biodegradáveis uso dos polímeros biodegradáveis e espumas biodegradáveis |
CZ19971437A CZ292145B6 (cs) | 1994-11-15 | 1995-06-27 | Biologicky odbouratelný polymer a biologicky odbouratelná termoplasticky tvářecí hmota a jejich použití |
PL95321599A PL321599A1 (en) | 1994-11-15 | 1995-06-27 | Biodegradable polymers, method of obtaining them and their application in production of biodegradable formpieces |
EP95924943A EP0792309B1 (de) | 1994-11-15 | 1995-06-27 | Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper |
CA002205071A CA2205071C (en) | 1994-11-15 | 1995-06-27 | Biodegradable polymers, preparation thereof and use thereof for producing biodegradable moldings |
NZ289416A NZ289416A (en) | 1994-11-15 | 1995-06-27 | Biodegradable polymers, process for their production and their use in producing biodegradable mouldings |
HU9701858A HU222853B1 (hu) | 1994-11-15 | 1995-06-27 | Biológiailag lebontható polimerek, eljárás előállításukra és felhasználásuk biológiailag lebontható formatestek előállítására |
AU29253/95A AU695820B2 (en) | 1994-11-15 | 1995-06-27 | Biodegradable polymers, process for their production and their use in producing biodegradable mouldings |
MX9703538A MX9703538A (es) | 1994-11-15 | 1995-06-27 | Polimeros biodegradables, preparacion de los mismos y uso de los mismos para producir moldeos biodegradables. |
AT95924943T ATE224414T1 (de) | 1994-11-15 | 1995-06-27 | Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper |
JP51565996A JP3411289B2 (ja) | 1994-11-15 | 1995-06-27 | 生分解可能なポリマー、その製造及び生分解可能な成形体の製造のためのその使用 |
US08/836,037 US6018004A (en) | 1994-11-15 | 1995-06-27 | Biodegradable polymers, preparation thereof and use thereof for producing biodegradable moldings |
DE59510382T DE59510382D1 (de) | 1994-11-15 | 1995-06-27 | Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper |
DK95924943T DK0792309T3 (da) | 1994-11-15 | 1995-06-27 | Biologisk nedbrydelige polymerer, fremgangsmåde til deres fremstilling samt deres anvendelse til fremstilling af biologisk nedbrydelige støbeformer |
TW084107353A TW387914B (en) | 1994-11-15 | 1995-07-17 | Biodegradable polymers, preparation thereof and use thereof for producing biodegradable moldings |
NO19972226A NO315120B1 (no) | 1994-11-15 | 1997-05-14 | Biologisk nedbrytbare polymerer, fremgangsmåte for deres fremstilling, samtderes anvendelse for fremstilling av biologisk nedbrytbareformlegemer |
FI972059A FI117510B (fi) | 1994-11-15 | 1997-05-14 | Biologisesti hajoavia polymeereja, menetelmä niiden valmistamiseksi, sekä niiden käyttö biologisesti hajoavien muotokappaleiden valmistukseen |
FI20060360A FI118223B (fi) | 1994-11-15 | 2006-04-13 | Biologisesti hajoavia polymeerejä, menetelmä niiden valmistamiseksi sekä niiden käyttö biologisesti hajoavien muotokappaleiden valmistukseen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DEP4440858.7 | 1994-11-15 | ||
DE4440858A DE4440858A1 (de) | 1994-11-15 | 1994-11-15 | Biologisch abbaubare Polymere, Verfahren zu deren Herstellung sowie deren Verwendung zur Herstellung bioabbaubarer Formkörper |
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US09/395,773 Division US6114042A (en) | 1994-11-15 | 1999-09-14 | Biodegradable polymers, the production thereof and use thereof for producing biodegradable moldings |
US09/395,733 Division US6201034B1 (en) | 1994-11-15 | 1999-09-14 | Biodegradable polymers, the production thereof and the use thereof for producing biodegradable moldings |
Publications (1)
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WO1996015173A1 true WO1996015173A1 (de) | 1996-05-23 |
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PCT/EP1995/002491 WO1996015173A1 (de) | 1994-11-15 | 1995-06-27 | Biologisch abbaubare polymere, verfahren zu deren herstellung sowie deren verwendung zur herstellung bioabbaubarer formkörper |
Country Status (22)
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US (4) | US6018004A (de) |
EP (2) | EP1074570B1 (de) |
JP (1) | JP3411289B2 (de) |
KR (1) | KR100365455B1 (de) |
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