http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1328332-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e5302e08e56037ff7bc5c9b6fcc29f9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-08 |
| filingDate | 1971-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1328332-A |
| titleOfInvention | High molecular weight vinyl polymers |
| abstract | 1328332 Polymerization UNION CARBIDE CORP 4Jan 1971 [5 Jan 1970] 251/71 Headings C3G and C3P Non-aqueous dispersions of high molecular weight "vinyl" polymers are prepared by (a) heating at 25 to 150‹ C. with agitation for at least 30 minutes (1) a mixture of "vinyl" monomer and an aliphatic or alicyclic hydrocarbon diluent, the concentration of monomer being 5 to 85 weight per cent, (2) 0À01 to 1À0 weight per cent based on said monomer of a diene selected from norbornadiene, ethylidene norbornene, Diels Alder adduct of cyclopentadiene and norbornadiene, norbornadiene dimer and dicyclopentadiene, (3) 0À1 to 10 weight per cent based on said monomer of a polymeric organic interfacial agent and (4) 0À01 to 1À0 weight per cent based on said monomer of a free radical polymerization initiator, and (b) recovering a non-aqueous dispersion of a polymer having a solution viscosity of at least 1000 cps. when measured as a 1 molar solution in benzene at 20‹ C. Specified monomers are vinyl acetate, laurate and stearate; methyl and ethyl acrylates; methyl, ethyl, lauryl and stearyl methacrylates; styrene; p-methyl styrene; and vinyl fluoride and vinyl chloride. Specified diluents are pentanes, hexane, heptane, isooctane, cyclopentane, cyclohexane and methyl cyclohexane, optionally admixed with aromatic hydrocarbons, ethers and esters. Specified polymeric interfacial agents are copolymers of α-olefins with polar monomers such as vinyl esters, polyvinyl alkyl ethers, polypropylene oxide rubbers, butadiene-styrene rubbers and ethylene-propylene terpolymers. Specified initiators are t-butyl perpivalate, disec-butyl peroxydicarbonate, diisopropyl peroxydicarbonate and isobutyryl peroxide. The polyvinyl acetate products may be hydrolysed without significant reduction of molecular weight. In examples vinyl acetate is polymerized in hexane in the presence of methyl ethyl ketone, ethylene/ vinyl acetate copolymer, t-butyl perpivalate and (1-7) norbornadiene, (8) ethylidene norbornene, (9) cyclopentadiene/norbornadiene adduct, (10) norbornadiene dimer and (11) dicyclopentadiene; and (12) vinyl chloride, (13) vinyl stearate, (14) methyl methacrylate and (15) ethyl acrylate are polymerized in hexane in the presence of methyl ethyl ketone, ethylene/vinyl acetate copolymer, t-butyl perpivalate and norbornadiene; in Example (16) the polyvinyl acetate of Example (1) is partially hydrolysed in the presence of hydrochloric acid and triphenyl phosphine. |
| priorityDate | 1970-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 79.