http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2052593-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c22e48d972f4ef28af7c7d72e7f09047 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb888fc55a1898ccb2505006a6738244 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-06 |
| filingDate | 1991-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b337b5fd41a145fa632b8b08b22a6f75 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12d3289c82c6a08a0892e36424c4b934 |
| publicationDate | 1992-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2052593-A1 |
| titleOfInvention | Preparation of polyorganosiloxanes with controlled low levels of hydroxy substitution |
| abstract | PREPARATION OF POLYORGANOSILOXANES WITH CONTROLLED LOW-LEVELS OF HYDROXY SUBSTITUTION ABSTRACT The described process uses aqueous hydrogen chloride as a catalyst to effect the condensation of chloride and hydroxy end-substituted polyorganosiloxanes, in the presence of triorganosilyl endblocker to control chain length. The inventors have discovered that within a range of about 10 to 30 percent aqueous solution of hydrogen chloride, it is possible to produce polyorganosiloxanes with low levels of chloride and hydroxy substitution. Furthermore, it has been found that within this hydrogen chloride range, temperature and hydrogen chloride concentration can be controlled to produce polyorganosiloxane polymers with a reproducible and predictable level of hydroxy substitution. |
| priorityDate | 1990-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.