http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1488291-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a526baeaf0a6e90f4a91d4dbfd619756 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4841 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7671 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-8019 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 |
| filingDate | 1975-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1488291-A |
| titleOfInvention | Polyurethane structural member |
| abstract | 1488291 Polyurethane structural member GOODYEAR TIRE & RUBBER CO 21 March 1975 [10 July 1974] 11933/75 Heading C3R A structural member, such as a facia for automobiles, composed of a set liquid reaction mixture which goes from a liquid to a set state in less than 4 minutes and exhibits free NCO groups at the time it is removed from the mould, and having the structural characteristics of an ASTM tear (p.l.i.) of 440-600, an ASTM tangent modulus of elasticity (p.s.i.) at -20 F. of 83,0001000, at 75 F. of 27,0006000 and at 158 F. of 50001000 and a sag measured after one hour at 250 F. of less than 0À3 inches and an ASTM Shore D hardness of 563, is prepared from a liquid polyether urethane forming reaction mixture comprising a mixture of 86-104 p.b.w. of a prepolymer of methane-di(phenylisocyanate) and tripropylene ether glycol, dipropylene ether glycol or another polyether diol having a M.Wt. below 1000, the prepolymer having 12-32% wt. of free NCO groups, 82- 78 p.b.w. of polypropylene ether triol, said triol having been obtained by condensing propylene oxide on a triol generator selected from trimethylol propane, trimethylol ethane and glycerol and capping with 10-25 mole per cent of ethylene oxide to give a M.Wt. of 4000-7000, 14-25 p.b.w. of a C 2 -C 4 diol, preferably 1,4- butane diol, and 0-10 p.b.w. of a blowing agent selected from halohydrocarbons boiling below 110 F. or water to give a density of 50- 70 pounds per cubic foot. A one shot process is generally used. In the example a polyetherurethane facia is prepared by injecting into an epoxy resin fibreglass impregnated mould at 100-140 F. a reaction mixture comprising an ethylene oxide capped propylene oxide adduct of trimethylolpropane of M.Wt. 6000, 1,4- butane-diol, dibutyltin dilaurate, triethylene diamine, carbon black pigment and a prepolymer of methane-di(phenylisocyanate) and either dipropylene ether glycol or tripropylene ether glycol. The resulting congealed part is stripped from the mould and oven-cured. |
| priorityDate | 1974-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 44.