http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1044509-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0235f5aeeff44e5b1733138b721f5c06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 |
| filingDate | 1965-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1044509-A |
| titleOfInvention | Chloro-substituted diaminodiphenyl methanes and their use as curing agents for liquid polyurethanes |
| abstract | The invention comprises an acid-catalysed reaction product of 2-chloroaniline (a), 2,5-dichloroaniline (b) and formaldehyde (c), in mol. ratios (a): (b):: 9:1 to 1:2 and [(a) + (b)]: (c) being at least 2:1. Said product is a mixture of bis(4 - amino - 3 - chlorophenyl)methane, bis(4-amino-2,5-dichlorophenyl)methane and 4,41-diamino - 2,5,31 - trichlorodiphenylmethane; the latter component, which is claimed per se, is separated from the mixture by extracting a benzene solution with 20% dichloroacetic acid.ALSO:A liquid isocyanate-terminated polyurethane prepolymer is cured by heating with a curing agent providing 0.5-1.1 equivalents of amine per equivalent of isocyanate, the agent being an acid catalysed 2-chloroaniline/2,5-dichloro-aniline/formaldehyd product comprising bis-(4 - amino - 3 - chlorophenyl)methane, bis-(4 - amino - 2,5 - dichlorophenyl)methane and 4,41 - diamino - 2,5,31 - trichlorodiphenyl-methane; alternatively, the latter compound alone may be utilized. Suitable prepolymers are listed, but in an example a hydroxy-terminated polyethylene adipate polyester (M.W. 1220)/2,4-toluenediisocyanate product is specified. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012028323-A1 |
| priorityDate | 1964-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.