# US 2013/0158196 A1 · Aliphatic-aromatic copolyetheresters > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158196 A1 - Document ID: US20130158196A1 - Status: Published application - Kind: A1 - Application number: 13/329,526 - Filed: 2011-12-19 - Published: 2013-06-20 - Earliest claimed: 2011-12-19 - Assignees: E. I. Du Pont de Nemours and Company - Inventors: Mark F. Teasley - Web page: https://patentgrep.com/patent/US20130158196A1 ## CPC - C08G 63/672: Dicarboxylic acids and dihydroxy compounds - C08J 5/18: Manufacture of films or sheets - C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence) - C08L 3/00: Compositions of starch, amylose or amylopectin or of their derivatives or degradation products - C08L 99/00: Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00 - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Provided are aliphatic-aromatic copolyetheresters that can exhibit biodegradation and improved physical properties. The copolyetheresters can be blended with other polymeric materials, and are useful for making a variety of shaped articles. ## Claims ### Claim 1 An aliphatic-aromatic copolyetherester consisting essentially of: I. a dicarboxylic acid component consisting essentially of, based on 100 mole percent total dicarboxylic acid component: a. about 100 to about 40 mole percent of a terephthalic acid component; b. about 0 to about 60 mole percent of a linear aliphatic dicarboxylic acid component; and c. optionally about 2 to about 60 mole percent of a non-linear dicarboxylic acid component; II. a glycol component consisting essentially of, based on 100 mole percent total glycol component: a. about 99.5 to about 30 mole percent of a linear glycol component; and b. about 0.5 to about 70 mole percent of a polyalkylene ether glycol component. ### Claim 2 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the copolyester is semicrystalline. ### Claim 3 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the copolyester is biodegradable as defined according to EN 13432. ### Claim 4 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the linear dicarboxylic acid component is selected from the group consisting of succinic acid, glutaric acid, azelaic acid, sebacic acid, and brassylic acid. ### Claim 5 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the linear dicarboxylic acid component is succinic acid. ### Claim 6 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the linear glycol component is selected from the group consisting of 1,3-propanediol and 1,4-butanediol. ### Claim 7 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the polyalkylene ether glycol component has a molecular weight in the range of about 100 to 4000 daltons. ### Claim 8 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the polyalkylene ether glycol component is selected from the group consisting of poly(trimethylene ether) glycol and poly(tetramethylene ether) glycol. ### Claim 9 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the optional non-linear dicarboxylic acid component is selected from the group consisting of fatty acid dimer, hydrogenated fatty acid dimer, 1,2-cyclohexane dicarboxylic acid, (±)-camphoric acid, phthalic anhydride, and phthalic acid. ### Claim 10 (depends on 1) The aliphatic-aromatic copolyether ester of claim 1 wherein the dicarboxylic acid component consists essentially of: a. about 70 to about 40 mole percent of the terephthalic acid component; b. about 30 to about 60 mole percent of the linear aliphatic dicarboxylic acid component; and c. optionally about 2 to about 60 mole percent of the non-linear dicarboxylic acid component; wherein the glycol component consists essentially of: a. about 99.5 to about 70 mole percent of the linear glycol component; and b. about 0.5 to about 30 mole percent of the polyalkylene ether glycol component. ### Claim 11 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the dicarboxylic acid component consists essentially of: a. about 56 to about 46 mole percent of the terephthalic acid component; and b. about 44 to about 54 mole percent of the linear aliphatic dicarboxylic acid component; wherein the glycol component consists essentially of: a. about 99 to about 96 mole percent of the linear glycol component; and b. about 1 to about 4 mole percent of the polyalkylene ether glycol component having a molecular weight in the range of about 1000 to about 2000 daltons. ### Claim 12 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the dicarboxylic acid component consists essentially of about 100 mole percent of the terephthalic acid component; and wherein the glycol component consists essentially of: a. about 50 to about 30 mole percent of the linear glycol component; and b. about 50 to about 70 mole percent of the polyalkylene ether glycol component having a molecular weight in the range of about 100 to about 1000 daltons. ### Claim 13 (depends on 1) The aliphatic-aromatic copolyetherester of claim 1 wherein the dicarboxylic acid component consists essentially of about 100 mole percent of the terephthalic acid component; and wherein the glycol component consists essentially of: c. about 44 to about 35 mole percent of the linear glycol component; and d. about 56 to about 65 mole percent of the polyalkylene ether glycol component having a molecular weight in the range of about 200 to about 400 daltons. ### Claim 14 (depends on 1) A blend comprising the aliphatic-aromatic copolyetherester of claim 1 and at least one other polymeric material. ### Claim 15 (depends on 14) The blend of claim 14 wherein the other polymeric material is selected from the group consisting of a naturally derived polymer, starch, and poly(lactic acid). ### Claim 16 (depends on 1) A shaped article comprising the aliphatic-aromatic copolyetherester of claim 1. ### Claim 17 (depends on 14) A shaped article comprising the blend of claim 14. ### Claim 18 (depends on 1) A film comprising the aliphatic-aromatic copolyetherester of claim 1. ### Claim 19 (depends on 14) A film comprising the blend of claim 14. ### Claim 20 (depends on 18) The film of claim 18 with tear strength greater than about 4000 g/mm according to ASTM D1922.