http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1144152-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F18-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F263-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F261-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F261-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F263-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F18-04 |
| filingDate | 1966-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1969-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1144152-A |
| titleOfInvention | Process for the production of an aqueous dispersion of a polymer of a vinyl ester |
| abstract | 1,144,152. Polymerization of vinyl esters. FARBWERKE HOECHST A.G. 26 May, 1966 [26 May, 1965], No. 23572/66. Heading C3P. Aqueous dispersions of vinyl ester polymers are produced by polymerizing at least one vinyl ester of a monocarboxylic acid with 2 to 19 carbon atoms, alone or in the presence of up to 35% by weight of at least one other mono-olefinically unsaturated monomer, in an aqueous phase, suitably at 40‹ to 95‹ C., using a watersoluble free radical polymerization catalyst in the presence of, as protective colloid, a reaction product of polyvinyl alcohol and 0À1 to 10% by weight of at least one mono-olefinically unsaturated aldehyde containing 3 to 8 carbon atoms, the final dispersion containing 0À5-15% of colloid. The polyvinyl alcohols are saponification products of vinyl ester homopolymers, or copolymers or graft polymers, many of which polymers are specified. Specified aldehydes are but - 3 - en - 1 - al, pent - 2 - en - 1 - al, tiglic aldehyde, hex-2-en-1-al, acrolein, α-ethyl-, α- methyl-, #-ethyl-, and α-propylacrolein, and crotonic aldehyde. Specified comonomers are acrylic acid, methacrylic acid, maleic acid, fumaric acid, and esters of these acids with aliphatic monohydric saturated alcohols containing 1 to 10 carbon atoms, and also acrylamide, methacrylamide, crotonic acid, and vinyl chloride. The modified polyvinyl alcohol may be obtained by subjecting the vinyl ester polymers, in methanol and in the presence of alkaline or acid catalysts, to an alcoholysis, and reacting the polyvinyl alcohol obtained, in the presence of acid catalysts and at an elevated temperature, with the unsaturated aldehyde(s). Additional emulsifiers and protective colloids may also be present, e.g. an N-vinyl-N-methylacetamide - 2 - ethylhexyl - acrylate copolymer. Vinyl ester polymers produced in the examples are those of (1), (2) vinyl acetate, (3) vinyl propionate, and (4) vinyl acetate, vinyl ester of branched aliphatic monocarboxylic acids having 9 to 19 carbon atoms, and acrylamide. In comparative examples, unmodified polyvinyl alcohols are used (1A, 2B, 3B), and polyvinyl alcohols modified with saturated aldehydes (1G, 1H-butyraldehyde, 4B - acetaldehyde). The dispersions may be used as adhesives. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6120638-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2326672-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2326672-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010030323-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4397968-A |
| priorityDate | 1965-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.