http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1492144-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/C08G2110-0025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S521-902 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-282 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-161 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-168 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-674 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-095 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 |
| filingDate | 1975-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1492144-A |
| titleOfInvention | Rigid foams and production thereof |
| abstract | 1492144 Carbodiimide-isocyanurate foams containing urethane linkages BASF WYANDOTTE CORP 12 May 1975 [23 May 1974] 19798/75 Heading C3R A rigid carbodiimide.isocyanurate foam containing urethane linkages is prepared by condensing an organic polyisocyanate in the presence of a blowing agent, and from 0À01 to 0À5 equivalent per equivalent of isocyanate of a primary hydroxy-terminated polyoxyalkylene or polyester polyol having an average functionality of from 2 to 8 and an average equivalent weight of from 150 to 1,580 and a catalyst system comprising (a) furfuryl alcohol or methanol, (b) a tertiary amine trimerization catalyst and (c) a urethane catalyst. Suitable polyols are ethylene oxide adducts of water, or an organic compound having 2-8 active hydrogen-containing groups such as an aliphatic alcohol having 2-8 OH groups, an aliphatic or aromatic polyamine having 1-4 amino groups, or mono- or polynuclear polyhydric phenols; or ethylene oxide capped propylene oxide or mixed propylene oxide/ethylene oxide adducts of the above compounds; and polyester polyols prepared from dibasic carboxylic acids and primary OH-terminated polyhydric alcohols. Suitable trimerization catalysts include 1,3,5- tris(N,N - dialkylaminoalkyl) - s - hexahydrotriazines and alkylene oxide and water adducts thereof, 2,4,6-tris(dimethylaminomethyl)phenol, o- and/or p-dimethylamino methylphenol, and triethylene diamine or the alkylene oxide or water adduct thereof. Suitable urethane catalysts are the conventional metal or organometallic salts of carboxylic acids and tertiary amines. The polyisocyanate may be one represented by the formula R(NCO) z where R is a polyvalent aliphatic, aralkyl, alkaryl or aromatic radical, or a "quasi-prepolymer" prepared by recting an excess of an organic polyisocyanate with an organic compound containing at least 2 isocyanate reactive hydrogen atoms. Suitable blowing agents are water, halocarbons and low boiling hydrocarbons. Optional ingredients include, plasticizers, e.g. tris(2-chloroethyl)- phosphate; silicone surfactants; inorganic fillers and pigments. The foams generally have a density of 1 to 40 pounds per cubic foot and are fire-resistant. In the examples rigid foams are prepared from (1) polymethylene polyphenyl isocyanate or an 80/20 mixture of 2,4- and 2,6- toluene diisocyanate; (2) either an ethylene oxide/trimethylolpropane adduct or an ethylene oxide capped propylene oxide adduct of either trimethylolpropane or glycerine; (3) furfuryl alcohol or methanol; (4) 1,3,5-tris(N,N-dimethylaminopropyl) - s - hexahydrotriazine; (5) either dibutyltin diacetate or dibutyltin dilaurate or stannous octoate or lead octoate; (6) tris(2-chloroethyl)phosphate; (7) a silicone surfactant; and (8) fluorotrichloromethane. |
| priorityDate | 1974-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.