| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-20 |
| filingDate |
1978-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1980-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7347100816185bf0e3aaa5fb50f55cbb |
| publicationDate |
1980-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4221703-A |
| titleOfInvention |
Stabilization of polymers containing poly(alkylene oxide) units |
| abstract |
A stabilized copolyester composition consisting essentially of (a) a multiplicity of recurring long chain units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being represented by the formula <IMAGE> I and said short chain units being represented by the formula <IMAGE> II where G is a divalent radical remaining after the removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol having a molecular weight of about 400-6000 and a carbon to oxygen ratio of about 2.0-4.3; R is a divalent radical remaining after removal of carboxyl groups from a dicarboxylic acid having a molecular weight less than about 300 and D is a divalent radical remaining after removal of hydroxyl groups from a diol having a molecular weight less than about 250; provided said short chain ester units amount to about 15-95 percent by weight of said copolyester and (b) an effective concentration of amide linkages which on hydrolysis yield a primary amino group and a carboxyl group. Optionally up to about five percent of an antioxidant may also be present. In a specific embodiment of the instant invention the amide linkages are introduced during the preparation of the copolyetherester which assures the ultimate in uniformity of distribution and avoids a separate blending step. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4985536-A
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5824412-A
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4555542-A
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4520150-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008161129-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9513423-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5464890-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009081439-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5747591-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0058503-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009082137-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4906729-A |
| priorityDate |
1978-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |