http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1529898-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-0655 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-00 |
| filingDate | 1976-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1978-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1529898-A |
| titleOfInvention | High molecular weight polytriazines of soluble polymeric n-cyano-isourea ethers |
| abstract | 1529898 Polytriazines BAYER AG 22 July 1976 [24 July 1975] 30590/76 Heading C3R Polytriazines are obtained by reacting (a) a compound of formula where Ar is an aromatic radical which may be interrupted by bridge members, R is a bond or an alkylene group which may be substituted by an alkyl or phenyl group, and m and n are each 1, 2 or 3, with (b) cyanogen halide at below 65‹ C., a base being added before, during or after the reaction, to form an aromatic cyanic acid ester containing cyanamide groups; converting the cyanic acid ester at an elevated temperature into a prepolymer and allowing the prepolymer to react to completion at an elevated temperature to form a high molecular weight polytriazine. The conversion to a prepolymer may be carried out at 65‹ C. to 150‹ G. and the conversion to a high molecular weight polytriazine at 150‹ C. to 350‹ C., optionally in the presence of a catalyst. In examples starting materials reacted with cyanogen chloride are m-aminophenol, 2-methyl-4-aminophenol, 3- chloro-4-aminophenol, 2,6-dimethyl-3-aminophenyl, 2,3,5-trimethyl-4-aminophenol, 5- amino-α-naphthol, 2-(4-aminophenyl)-2-(4-hydroxyphenyl)-propane, 4-amino-41-hydroxydiphenyl ether, 4-amino-4<SP>1</SP>-hydroxydiphenyl sulphone and 4-amino-4<SP>1</SP>-hydroxydiphenyl; the bases are triethylamine and potassium carbonate; catalysts used in the conversion to the final polytriazine are zinc chloride, tin chloride, zinc octoate, pyrocatechol, diaza-bicyclo-[2,2,2]-octane and tin octoate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110230201-A |
| priorityDate | 1975-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.