http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2000226452-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-32 |
| filingDate | 1999-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff42380bcf7c4b103e93907f4da3638b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf3c4244a09e06ab59b5ebfacc02bfb1 |
| publicationDate | 2000-08-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2000226452-A |
| titleOfInvention | Method for continuous production of organopolysiloxane gum |
| abstract | (57) Abstract: (I) A first step of mixing (A) at least one kind of cyclopolysiloxane represented by the following general formula (1) and (B) a terminal blocking agent, II) A mixture of the components (A) and (B) obtained in the first step is supplied to a self-cleaning type continuous polymerization machine, and the mixture is continuously supplied with (C) an alkaline polymerization catalyst. A second step of carrying out the polymerization at 100 to 250 ° C. under reduced pressure of less than I) Then, a third step of continuously supplying a neutralizing agent in an amount effective for neutralizing the catalyst to the reactant of the second step to terminate the polymerization reaction is provided. A continuous method for producing a polysiloxane gum. Embedded image (In the formula, R 1 and R 2 each represent an unsubstituted or substituted monovalent hydrocarbon group. M is an integer of 3 or more.) According to the present invention, the hydroxyl group content of the terminal unit. The organopolysiloxane gum having a high degree of polymerization with a reduced degree of polymerization can be continuously produced with stable quality at low cost and with high productivity. |
| priorityDate | 1998-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.