摘要:
A binder composition comprising a partially pre-oxidized drying oil and at least one co-vulcanizing agent. A method provides rapid curing of the compositions. The materials find utility in flooring, coating, and decorating applications. One preferred utility is in the manufacture of linoleum type flooring. Another preferred utility is in the manufacture of a transparent/translucent coating for improving the wear properties of surfaces.
摘要:
The invention provides a method of converting ethylenically unsaturated units of an olefinic substrate to corresponding cyclopropanyl units, comprising treating the olefinic substrate, in an ether medium, with zinc and diiodomethane and a catalytic amount of a metallo-hydride reducing agent. Preferred substrates are olefinic fatty acids or their functional derivatives, e.g. oleic acid esters.
摘要:
Disclosed herein are compounds of the general formula ##STR1## wherein x and y are integers from 3 to 9, x and y together equal 12, one Z is hydrogen and the other Z is a carboxylic acid group, and R.sub.1 and R.sub.2 are fatty acid groups. A process for introducing approximately one carboxylic acid group per triglyceride molecule in vegetable oils has been developed, and the resulting acid adduct forms soaps with attractive properties. The process comprises first conjugation of the double bonds of the nonconjugated polyunsaturated groups present in the fatty acid ester and elaidinization with a catalyst, such as iodine, and then adduct formation with acrylic acid to form the compounds of the general formula. This process also greatly stabilizes the triglyceride against atmospheric oxidation and polymerization reactions.
摘要:
Acidified tall oil soap, tall oil middle cut and tall oil fatty acids can be pyrolyzed at 400* to 700*C on Vycor glass in a hot tube to yield products which enhance the building tack of synthetic SBR rubber.
摘要:
In a process for preparing an oil-containing binder for use in water-based binder compositions, by addition at a temperature above 175 DEG C. of an acyclic unsaturated carboxylic acid with at most 9 carbon atoms in the carbon chain, or an anhydride thereof, to an oil containing unsaturated fatty acid residues free from hydroxyl groups, the oil used is a drying or semi-drying oil which has been previously modified by chemical reaction other than by thermal polymerization or by the addition of an acyclic unsaturated carboxylic acid. A mono- or dicarboxylic acid may be used, and the addition may be carried out at 200 DEG to 240 DEG C. The product is dispersed in an aqueous liquid with the aid of a nitrogen base; it may be dissolved in a lyotropically acting solvent before being dispersed in water. The dispersion may be mixed with an emulsion of a synthetic resin and pigments and/or fillers may be included. In examples the modified oils are a copolymer of linseed oil and vinyl toluene, a copolymer of soybean oil, wood oil and vinyl toluene, an oil obtained by reacting boric acid with a mixture of fatty acids, the esterification product of linseed oil fatty acid and an epoxy resin derived from epichlorhydrin and bisphenol A, linseed oil interesterified with glycerol and reacted with phthalic anhydride, and perilla oil fatty acid monoester of glycerol esterified with colophony; the modified oils are reacted with maleic anhydride, fumaric acid and maleic acid, and the products are converted to their salts with ammonia and dispersed in water, in some instances after being dissolved in ethylene glycol monobutyl ether; compositions are prepared by adding to some of the dispersions cobalt, lead and manganese naphthenates, titanium dioxide, iron oxide red, blanc fixe, microtalcum, red lead, and a polyvinyl acetate emulsion.ALSO:A water-based coating composition comprises an oil-containing binder obtained by addition at a temperature above 175 DEG C. of an acyclic unsaturated carboxylic acid with at most 9 carbon atoms in the carbon chain, or an anhydride thereof, to an oil containing unsaturated fatty acid residues free from hydroxyl groups, the oil used being a drying or semi-drying oil which has been previously modified by chemical reaction other than by thermal polymerization or by the addition of an acyclic unsaturated carboxylic acid. A mono- or dicarboxylic acid may be used, and the addition may be carried out at 200 DEG to 240 DEG C. The product is dispersed in an aqueous liquid with the aid of a nitrogen base; it may be dissolved in a lyotropically acting solvent before being dispersed in water. Pigments and/or fillers may be included in the composition. In Example (3), an oil obtained by reacting boric acid with a mixture of fatty acids is reacted with maleic anhydride, dissolved in ethylene glycol monobutyl ether, converted to the salt with ammonia, and dispersed in water.