http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1312673-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-823 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4269 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 |
| filingDate | 1970-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1312673-A |
| titleOfInvention | Production of polyester polyols |
| abstract | 1312673 Polylactone polyols DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT 29 June 1970 [18 July 1969] 31379/70 Heading C3R A polyester polyol is prepared by polymerizing a lactone corresponding to the general formula in which each R is hydrogen or alkyl with 1 to 10 carbons and n is 4 to 10, at a temperature of from 50‹ to 300‹ C., in the presence of water and/or an alkali metal hydroxide and/or an alkaline earth metal hydroxide in a total amount of 0À03 to 1À0 mole per mole of lactone to form an #-hydroxy polylactone carboxylic acid with an average molecular weight of from 300 to 3,000 or an alkali metal or an alkaline earth metal salt thereof, converting any such salt into the free #-hydroxy polylactone carboxylic acid and esterifying the resulting polymer with a polyhydric alcohol, optionally after intermediate isolation. In the examples, polyester polyols are prepared from e-caprolactone and (Examples 1, 5, 6, 9, 10) 1,4-butane diol, (Example 2) 1,6-hexane diol and (Examples 3, 4, 7, 8) triethylene glycol. The polyester polyols may be used as lubricants, release agents, plasticizers and as starting materials in polyurethane production. |
| priorityDate | 1969-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.