http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IE-44321-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_16890954fa97fa1ea88523e23b283152 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-40 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-058 |
| filingDate | 1976-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1981-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IE-44321-B1 |
| titleOfInvention | Rimprovements in and relating to stabilisers for formols |
| abstract | 1520540 Vinyl acetate telomers and derivatives thereof PRODUITS CHIMIQUES UGINE KUHLMANN 16 Dec 1976 [19 Dec 1975] 52485/76 Heading C3P [Also in Division C2] Partial formals of vinyl acetate telomers of M.W. 500-5000 are prepared by (a) telomerizing vinyl acetate in the presence of a free-radical generator and a non-halogenated telogen, the molar ratio of telogen/vinyl acetate being 0À01- 4, (b) after possible distillation of unreacted vinyl acetate and/or telogen, partially reacting the telomer with formaldehyde in the presence of a strong mineral acid and in an organic solvent of formula CH3-R in which R is nitro, cyano or carboxyl, the molar ratio of formaldehyde to initial vinyl acetate being from 0À2-1, and (c) isolating the partial formal by precipitation in alkaline water. In Examples, vinyl acetate is telomerized in the presence of benzoyl peroxide and one of methyl ethyl ketone, 3- pentanone, 2,4-pentanedione, cyclohexanone, acetaldehyde, butyraldehyde or diethyl phosphite as telogen; the products are then reacted with formaldehyde in the presence of concentrated sulphuric acid and in some cases also hydrogen peroxide, in a solvent which is glacial acetic acid, nitromethane or acetonitrile; and the final products are partially neutralized with sodium hydroxide and isolated. Use.-Stabilizers for aqueous formaldehyde solutions. |
| priorityDate | 1975-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 73.