http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-98010-C
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F212-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D129-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F16-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F16-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D129-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-14 |
| publicationNumber | NL-98010-C |
| abstract | Copolymers of allyl alcohol and a vinyl aromatic compound containing 15 to 85% of the latter and suitable for preparing ester coating materials are obtained by polymerizing the two components at 100 DEG to 250 DEG C. in the presence of 0,01 to 10% of a peroxide catalyst, the mol ratio of allyl alcohol to vinyl aromatic compound being maintained within the range of 4:1 to 900:1 by the incremental addition of vinyl aromatic compound during the polymerization. Superatmospheric pressures, e.g. 30 to 150 p.s.i., are necessary to maintain a liquid phase. Specified vinyl aromatic compounds are styrene, 01-m-and p-methyl styrenes, 2, 4-dimethyl styrene, p-chlorostyrene, p-ethyl styrene and beta-vinyl naphthalene. The peroxide catalyst must have a decomposition temperature above 90 DEG C., suitable compounds being di-tertbutyl peroxide, hydrogen peroxide, tert-butyl hydroperoxide, cumene hydroperoxide, paramenthane hydroperoxide and tert-butyl perbenzoate. A stabiliser such as tert-butyl catechol may be present. After purifying by distillation, clear and hard copolymers are obtained which are soluble in lower alcohols, acetone, chloroform, benzene and toluene, and have molecular weights of from about 300 to 4,000. They may be esterified with fatty acids having 12 to 22 carbon atoms in the molecule and an iodine number of at least 85, or with saturated fatty acids such as coconut acids, the resulting esters having acid numbers lower than 30. Suitable unsaturated acids are oleic, lauroleic, palmitoleic, linoleic and linolenic acids; the acids of linseed, soya bean, dehydrated castor and perilla oils; and the acids obtained by treating drying oils to effect conjugation of the double bonds, e.g. by alkaline isomerization. The esters may be modified by incorporating a polycarboxylic acid or anhydride or a polyhydric alcohol. Coating compositions are obtained by dissolving the ester in a solvent, e.g. mineral spirit, together with a naphthenate drier; and other resins such as urea- or melamine-formaldehyde resins may be added. |
| priorityDate | 1956-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.