http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1097984-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-01 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1965-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85a72bd77e4b1498d06420d89ec9dc06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e45de2c06fa20e0befa94b857eb008ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71533919ca5a30e46985e91eacad26b4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b15fb830b00a4eab2c45923adf0a2ff1 |
| publicationDate | 1968-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1097984-A |
| titleOfInvention | Continuous production of ethylenically unsaturated polymerisable polyesters |
| abstract | An ethylenically unsaturated polyester is prepared by passing substantially stoichiometric amounts of (a) at least one dibasic carboxylic acid or anhydride, of which at least a part is unsaturated, (b) at least one dihydric alcohol and optionally (c) minor amounts of (c1) mono- or tri- or higher carboxylic acids and/or (c2) mono- or tri- or higher hydric alcohols, and/or (c3) hydroxy-carboxylic acids, continuously through 3 or 4 stirred vessels in series, the temperatures of the first and last vessels being 120-190 DEG C. and 195-240 DEG C. respectively, the temperature(s) of the intermediate vessel(s) being higher than that of the first vessel and below that of the last. The pressure in the last 1 or 2 vessel(s) is preferably 20-200 mm. Hg., in the first 500-900 mm. Hg. The mean residence time in each vessel is preferably 1-7 hours, and each vessel is preferably 70-80% full of reaction material, an inert gas occupying the remaining volume. Suitable starting materials are (a) maleic, fumaric, o-, m- and p-phthalic, and 1,2,3,6-tetrahydrophthalic acids, 3,6 - endomethylene - 1,2,3,6 - tetrahydrophthalic acid, succinic, adipic, and sebacic acids or anhydrides, (b) ethylene and propylene glycols, trimethylene-, tetramethylene- and hexamethylene glycols, neopentyl glycol, and 2,2,4 - trimethylpentanediol - 1,4, (c1) benzoic, trimellitic, pyromellitic acids, (c2) octanol, decanol, glycerol, pentaerythritol, and (c3) 3-methylol-cyclohexane carboxylic acid. In an example, maleic and phthalic anhydrides are condensed with propylene glycol in three vessels. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4180635-A |
| priorityDate | 1964-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.