http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1206682-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-65 |
| filingDate | 1982-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1986-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78930d1312f8108a157aa67cd4b17dd7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea618282a4e9ab31d66cca14361c7c93 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab9f76b078d8d50facb348a58a75cd10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cac5e23fb128fbb68c1784715dfdf48a |
| publicationDate | 1986-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1206682-A |
| titleOfInvention | Process for the preparation of viscosity stable polyurethane solutions |
| abstract | PROCESS FOR THE PREPARATION OF VISCOSITY STABLE POLYURETHANE SOLUTIONS ABSTRACT OF THE DISCLOSURE A process is described for the preparation of pre-dominantly linear polyurethane solutions which comprises a) reacting A) an organic diisocyanate or diisocyanate mixture op-tionally containing small portions of a triisocyanate with B) one or more polyhydroxyl compounds which are predomi-nantly bifunctional and generally have molecular weights of from about 400 to 5000 and C) optionally one or more chain lengthening agents having at least two isocyanate reactive hydrogen atoms and molecular weights of from about 32 to 399, wherein the proportion of isocyanate groups to the number of isocyanate-reactive hydrogen atoms is in the range of from about 0.9:1 to 1:0.9, and b) when the polyurethane formed has reached the required viscosity, adding a monofunctional, low molecular weight oxime having a molecular weight of from about 73 to 325, preferably butanone oxime, to the reaction mixture as chain breaking agent in a quantity equivalent to or in excess of the equivalents of unreacted isocyanate groups. The new chain breaking agents are simple compounds which effect rapid chain breaking and have no undesirable side effects as regards subsequent breakdown of the chains and even enable further synthesizing reactions to be car-ried out if desired, for example with diamines. |
| priorityDate | 1981-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.