http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0291121-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95585944cd76ddfb6dc33ed2a0b84403 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-40 |
| filingDate | 1988-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34e7a372ced343bd5aa3f588b08d361e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3fcec04c3ae6ee348b5e76a47a5cc31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5681f210d8848b0605348275b1d8d1ee |
| publicationDate | 1990-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0291121-A |
| titleOfInvention | Preparation of aromatic polyformal resin |
| abstract | PURPOSE: To make it possible to prepare the title resin with a high degree of polymn. in a short time by reacting a dihydric phenol with a methylene dihalide in a solvent in the presence of an alkali metal hydroxide and water. n CONSTITUTION: A dihydric phenol of formula HO-Ar-OH (wherein Ar in an arom. group) (e.g., 4,4'-dihydroxytetraphenylmethane) is reacted with a methylene dihalide (e.g., methylene chloride) in a solvent (e.g., dimethylimidazolidinone) in the presence of an alkali metal hydroxide (e.g., NaOH) and water. It is possible to synthesize in a short time a polyformal resin with a high degree of polymn. by such an extremely simple method as the addition of water. n COPYRIGHT: (C)1990,JPO&Japio |
| priorityDate | 1988-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.