http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1008610-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d4ada69388e0a1b68daaf536597c732 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-06 |
| filingDate | 1999-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_688a61198abbe1d9ffbceb14000ae929 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eca609ae9ddac172b36d64dbe6e0e401 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5babfc6c54c78ea08e98417414d39f6c |
| publicationDate | 2002-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1008610-B1 |
| titleOfInvention | Polymerisation of siloxanes |
| abstract | A polymerisation process comprising mixing siloxanes having silicon-bonded groups R' with ionic phosphazene base catalysts and allowing condensation via reaction of Si-R' groups with the formation of a Si-O-Si linkage, R' denoting a hydroxyl group or a hydrocarbonoxy group having up to 8 carbon atoms is claimed. The catalysts may be of the general formulae: <MATH> or <MATH> in which R<1> is hydrogen or an optionally substituted hydrocarbon group or in which two R<1> groups bonded to the same N atom may be linked to complete a heterocyclic ring, R<2> is hydrogen or an optionally substituted hydrocarbon group, x is 1, 2 or 3, y is 1, 2, 3 or 4 and A is an anion. Also claimed is a process which comprises mixing siloxanes having silicon-bonded groups R' and cyclic or linear siloxanes having no silicon-bonded groups R' with ionic phosphazene base catalysts and allowing the siloxane having silicon-bonded groups R' to condense and the cyclic and linear siloxanes having no silicon-bonded R' groups to polymerise by equilibration. |
| priorityDate | 1998-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.