http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1031481-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_19aaaa9f91b7bf94ef9bdd9425970c0c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G79-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G79-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-24 |
| filingDate | 1962-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1031481-A |
| titleOfInvention | Polyesters and the preparation thereof |
| abstract | Linear polyesters are obtained by condensing an alkali metal diphenate with a phenylphosphonic acid dihalide, the alkali metal diphenate being dissolved in water and the phenylphosphonic acid dihalide being dissolved in a water-immiscible organic liquid in which the polyester formed by the reaction is at least to some extent soluble. The reaction mixture may include a dicarboxylic acid dihalide, an aromatic disulphonic acid dihalide or an aromatic monocarboxy sulphonic acid dihalide. The polymer contains recurring units of formula <FORM:1031481/C3/1> where Ar is an arylene group, X is a carbon atom, an alkylene group, an alkylidene group, a cycloaliphatic group, a radical containing sulphur, an ether group, a carbonyl group, a tertiary amino group, or two or more alkylene or alkylidene groups linked by an arylene group, a tertiary amino group, an ether group, a carbonyl group or a group containing sulphur, R is a halogen atom, alkyl group, aryl group, aralkyl group, alkaryl group, cycloaliphatic group or halogenated alkyl, aryl, aralkyl, alkaryl or cycloaliphatic group, Y is a halogen atom, nitro group, or a radical R1 or OR1 where R1 is one of the groups listed in respect of R above, n and m are 0 or appropriate integers, p is at least 1, q is 0 or 1 and r is 0 or an integer. The reaction may be carried out in the presence of a quaternary ammonium, phosphonium or arsonium compound or a tertiary sulphonium compound. In examples, polyesters are prepared from diphenates obtained from 2,2-bis-(4-hydroxyphenyl)-propane, bis-(4 - hydroxyphenyl) - methylphenylmethane and an isomeric mixture of bis-(hydroxyphenyl)-methane, together with phenylphosphonic acid dichloride, isophthaloyl chloride, terephthaloyl chloride, 4,41 - dichlorosulphonyldiphenyl and m - chlorosulphonylbenzoyl chloride. Lists of other materials are given. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2111202-A1 |
| priorityDate | 1961-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.