http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0695768-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b0f615b92cd3bb66e8ea41483a2dc63 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F216-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F216-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F16-08 |
| filingDate | 1995-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f743fa4954e491bc44c1a9a8b9e2e79e |
| publicationDate | 1998-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0695768-B1 |
| titleOfInvention | Process for making vinyl aromatic/allylic alcohol copolymers |
| abstract | Prepn. of a vinyl aromatic/allylic alcohol copolymer comprises: (a) heating at 125-185[deg]C a reaction mixt. of an allylic alcohol, 10-30% of the total amt. of a vinyl aromatic monomer, and 45-75% of the total amt. to be used of a free radical initiator; and (b) adding to the reaction mixt. at a decreasing rate, the remaining 70-90% vinyl aromatic monomer and 25-55% free radical initiator to form a vinyl aromatic/allylic alcohol copolymer (A). The mole ratio of monomer to alcohol is 0.1-0.5. (A) has a number average molecular wt. of 800-2000 and an OH number of 180-280 mg KOH/g. Yield of the copolymer is increased as a result of gradual addn. of the initiator. Also claimed are (i) a prepn. process in which styrene is the monomer, (A) has a number average molecular wt. of 1200-1800 and an OH number of 180-220 KOH/g, and the mole ratio of styrene to alcohol used is 0.3-0.4; and (ii) a prepn. process, as in (i), in which (A) has a number average molecular wt. of 800-1400 and an OH number of 240-280 KOH/g, and the mole ratio of styrene to alcohol used is 0.15-0.25. |
| priorityDate | 1994-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.