http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1420059-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af411e4ea97a667678bc08f564238542 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S521-902 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0058 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S521-901 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0025 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-542 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 |
| filingDate | 1972-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1420059-A |
| titleOfInvention | Rigid foams of a polymer containing carbodiimide linkages and process for preparing them |
| abstract | 1420059 Polycarbodiimide foams BASF WYANDOTTE CORP 17 Nov 1972 [7 Feb 1972] 5125/75 Divided out of 1409756 Heading C3R A rigid foam is made of a polymer containing carbodimide linkages which is the product of condensation in the presence of a catalyst promoting the carbodiimide reaction of (i) a preformed mixture obtained by reaction of a primary or secondary polyamine and (ii) a stoichiometric excess of an organic polyisocyanate. The catalyst may be that of Specification 1,327,108, or a mixture of triazine and hexahydrotriazine. Additional polyisocyanate may be added to the preformed mixture including other preformed mixtures obtained by reacting another active hydrogen compound with excess polyisocyanate. In general the foams will contain 1 to 5 mol. per cent of urea and biuret groups. Numerous possible reactants are mentioned; in specific examples those used are crude methylene diphenylene diisocyanate or a blend thereof with an 80/20 mixture of 2,4 and 2,6-toluene diisocyanates and methylene dianiline or bis(2-chloroaniline), 2-methylpiperazine or hexamethylene diamine; tris(2- chloroethyl)phosphate as catalyst, a polysiloxane as surfactant and 1,1,2-trichloro-1,2,2- trifluoroethane as blowing agent are also used. The process and product of Example 27 of Specification 1,326,240 is disclaimed. |
| priorityDate | 1971-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.