http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-808102-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01B3-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-20 |
| filingDate | 1955-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1959-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-808102-A |
| titleOfInvention | Improvements relating to oil-modified polyester resins |
| abstract | An oil-modified alkyd resin is the reaction product of a dialkyl terephthalate, ethylene glycol, glycerine and a fatty oil in the proportions: the ratio of mols. of fatty oil to total mols. of reactants is 0.01-0.4, the ratio of mols. of glycerine to total mols. of reactants is 0.075-0.25, the ratio of number of hydroxyl groups in the ethylene glycol and glycerine to the number of terephthalyl radicals is greater than 2.0, and the ratio of number of mols. of glycerine to number of mols. of ethylene glycol is not more than 1.0. The oil may be soya, cottonseed, hydrogenated cottonseed, linseed, castor, hydrogenated castor, dehydrated castor, coconut, tung, oiticica, menhaden, hempseed, grapeseed, corn, cod liver, candlenut, walnut perilla, poppyseed, safflower, conjugated safflower, sunflower, rapeseed, chinawood, tristearin, whale, sardine or herring oil. Reaction may be effected (a) by heating all of the reactants together simultaneously (b) by first forming the fatty oil glycerides by heating the fatty oil with the glycerine and then adding the dialkyl terephthalate and ethylene glycol and continuing the heating; or (c) by first forming a glycol terephthalate resin by heating ethylene glycol with the dialkyl terephthalate, secondly forming fatty oil monoglycerides by heating the fatty oil with the glycerine, and thirdly heating the glycol terephthalate resin with the fatty oil monoglycerides. Catalysts for the reaction are lead oxides, lead acetate, zinc oxide, cadmium acetate, cuprous acetate, zinc acetate, lead acetate, magnesium acetate, beryllium acetate, stannic acetate, ferric acetate, nickel acetate, magnesium oxide and a mixture of litharge and cobalt acetate. The alkyds are particularly useful for insulating electrical conductors, e.g. magnet wires (see Groups XXXV and XXXVI) and to this end are dissolved in a solvent, e.g. m-cresol, a polyhydroxy benzene, a mono- or poly-alkylbenzene, a xylenol or a mixture of xylene and cresol together if desired with a curing agent, e.g. zinc octoate, cadmium octoate or an aromatic or aliphatic diisocyanate, the solution applied to the wires and the wires baked to remove the solvent and cure the resin. Minor amounts of other resins may be used, e.g. melamine-formaldehyde, silicone, polyurethane, epoxide, phenol-formaldehyde, aniline-formaldehyde, urea-formaldehyde, cellulose acetate, polyamide, vinyl, ethylene and styrene resins. The alkyds may also be used in moulding powders blended with wood flour, silica, glass fibres or diatomaceous earth. Specification 629,490 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3446763-A |
| priorityDate | 1954-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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