http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112538149-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4804 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 |
| filingDate | 2019-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112538149-B |
| titleOfInvention | A kind of preparation technology of casting type polyurethane elastomer |
| abstract | The present invention provides a process for preparing a cast-type polyurethane elastomer, which comprises the following steps: 1) reacting isocyanate with polyether polyol or polyester polyol in the presence of a tertiary amine catalyst, then adding an organic metal catalyst, eliminating 2) Using isocyanate or a prepolymer of isocyanate as elastomer B; 3) Mixing elastomers A and B in a mass ratio of 1:1 to 3:1. In the present invention, through simple prepolymer conversion, the water in the polyol is first reacted, and then the OH-terminated prepolymer, unreacted polyether polyol or polyester polyol in the elastomer A material and isocyanate or The prepolymer of isocyanate is reacted to form polyurethane elastomer, which has the advantages of simple process and avoids the generation of chemical bubbles, and can solve the problem of bubbles in polyurethane elastomer due to high moisture content caused by polyols not strictly preserved. |
| priorityDate | 2019-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.