http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4103170-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-8038 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7875 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-78 |
| filingDate | 1991-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73db69ba061c55416defb30fbe75d981 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7410558f1a50d5cc81f3db01368a3413 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92e881d67807e8eddf4b128fd1a857bf |
| publicationDate | 1992-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4103170-A1 |
| titleOfInvention | A PROCESS FOR THE PRODUCTION OF MODIFIED POLYISOCYANATES, THE POLYISOCYANATES RECEIVED BY THIS PROCESS, AND THEIR USE |
| abstract | Prodn. of modified polyisocyanates contg. 1-14 wt.% NCO (I) involves reaction of polyisocyanates of molecular wt. 168-500 (II) with aromatic aldazines of formula R-CH=N-N=CH-R (III) in the mol. ratio (NCO gps.):(III) = (1:0.005)-(1:0.5) at up to 200 deg.C, opt. followed by removal of excess (II); R = aromatic hydrocarbyl, opt. with inert substits. Also claimed are polyisocyanates modified by this process. Pref., (II) is HMDI, IPDI, TDI, MDI, etc. and (III) are obtd. by reaction of hydrazine with benzaldehyde, 4-nitro-, 4-chloro-, 4-dimethylamino-, 4-methoxy- or 3,4-didecyloxy-benzaldehyde, or anthracene-9-aldehyde; reaction is carried out at 100-200 deg.C in toluene, xylene, mesitylene or dibutyl phthalate, etc., with above mol. ratio = (1:0.02)-(1:0.4). USE/ADVANTAGE - (I) are used in the polyisocyanate polyaddition process. Enables prodn. of heterocyclic polyisocyanates (I) contg. segments with high thermal stability, useful esp. for the prodn. of heat-resistant PU-based p |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6433070-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1086970-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1086970-A3 |
| priorityDate | 1991-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 72.