http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-0200099-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1f8713f6ace083308920724981592661 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F293-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-00 |
| filingDate | 1999-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c52976e6929b7720a4b80432d9c0ead0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_11c557c7e2f85981736a18df976d5e7d |
| publicationDate | 2002-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-0200099-A2 |
| titleOfInvention | Triblock copolymers containing middle block of styrene / isoolefin copolymer |
| abstract | The present invention relates to a triblock copolymer comprising a middle block comprising a first copolymer of an isoolefin monomer and a first vinyl aromatic monomer and a homopolymer or two or more of a second vinyl aromatic monomer, vinyl aromatics, styrenes, methylstyrene, butylstyrene, halostyrene and p-allylstyrene. It contains end-blocks containing a second copolymer of a monomer selected from 3-butenyl) styrene. A further object of the present invention is to provide a process for the preparation of a triblock copolymer comprising: a) catalyzing a live polymerization of an isoolefin monomer (monomer A) and a first vinyl aromatic monomer (monomer B) by catalyzing a monomeric carbocationic polymerization condition; (b) allowing the polymerization to continue for a period of time T1 necessary to achieve a conversion of 20 to 80%, in which case additional monomers A and / or B may be added; (c) after the time T1 has elapsed, the polymerization is continued for only T2 for at least 95% conversion of the central block monomer with the addition of additional monomer A; d) after the T2 time, the apolymerization is continued by adding a second vinyl aromatic monomer (monomer C) for the T3 time required to achieve at least 95% conversion of the central block monomer; e) stopping apolymerization after T3; f) recovering the copolymer of pofiolefin; and the needle block copolymer obtained by the above process. SHE |
| priorityDate | 1998-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 88.