http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1423720-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2c9efaea5dccdc8052bc4dd188eafd9 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2377-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-185 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00186 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00164 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00168 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-18 |
| filingDate | 1973-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1423720-A |
| titleOfInvention | Process for the preparation of foam polyamide |
| abstract | 1423720 Foamed polyamides BRIDGESTONE TIRE CO Ltd 25 April 1973 [27 April 1972 (2)] 19678/73 Heading C3C A polyamide foam is made by the ring- opening polymerization of a lactam in the presence of a boric catalyst, a promoter and a foaming agent by (A) preparing a mixture of the lactam and the catalyst at a temperature above the m.p. of the lactam, (B) preparing a flowable mixture of the promoter and the foaming agent at room temperature (i.e. 20- 40‹ C.) at least one of these materials being a liquid at room temperature, (C) mixing A and B at a temperature above the m.p. of the lactam with vigorous agitation in a mixing vessel to initiate polymerization and (D) discharging the polymerization mixture into a mould before more than 10% of the lactam has been polymerized to the polyamide and allowing the polymerization to be completed. In the examples mixtures of (A) #-caprolactam with sodium caprolactam (as catalyst) and (B) hexamethylene diisocyanate, benzoyl chloride and/or acetyl caprolactam (as promoters), toluene and/or hexane (as foaming agents), a silicone oil (as foam stabilizer) and optionally #- caprolactam, were continuously mixed together and then discharged on to a moulding surface to form foams. |
| priorityDate | 1972-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.