http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-886750-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_884173611ccf93dc9bf94066c0383367 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G79-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G79-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-03 |
| filingDate | 1958-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-886750-A |
| titleOfInvention | Preparation of carboxylic esters |
| abstract | Polyesters are prepared by reacting under ester exchange conditions a diester of a C2-12 aliphatic dibasic acid with an aliphatic polyhydric alcohol of at least 4 carbon atoms in the presence of a catalyst which is a polymer obtained by reacting a titanium tetraester with a C2-20 glycol. The ester-exchange may form part of a single or multi-step process for preparing complex esters. Examples describe the reaction of methyl sebecate with polyethylene and polypropylene glycols. Specifications 866,053 and 866,054 are referred to.ALSO:Esters are prepared by reacting under ester exchange conditions a diester of a C2-12 aliphatic dibasic acid having at least one alcohol residue of not more than 4 carbon atoms with an aliphatic alcohol of at least 4 carbon atoms containing at least one carbon atom more than the alcohol residue of the diester, while removing the alcohol formed in the reaction, e.g. by employing a suitable temperature, and in the presence of a catalyst which is a polymer obtained by reacting a titanium tetraester with a C2-20 glycol (including polyglycols and halogen-substituted glycols) in the molar ratio of 0.5 to 4 moles of glycol per mole of titanium tetraester and, if necessary, heating and/or water washing to form the polymer. The alcohol reactant may be mono- or poly-hydric and may be an ether glycol having 1-50 ether oxygen atoms or may be the half-ester of a glycol and a monobasic aliphatic acid. The acid of the ester reactant may be saturated or unsaturated and may contain an ether atom, e.g. diglycollic. The ester interchange process may form part of a single or multi-step process for preparing complex esters. Specifications 866,053 and 866,054 are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4954649-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4892967-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4870204-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4824893-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4883905-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4789700-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4710532-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4711922-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5055609-A |
| priorityDate | 1957-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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