GB1023291A - Polymeric products and coating compositions containing the same - Google Patents

Abstract

An adduct of (a) an alpha, beta ethylenically unsaturated carboxylic acid, anhydride, or partial ester thereof containing the structure <FORM:1023291/C3/1> and (b) an ester of a copolymer of a styrene monomer and an allyl alcohol monomer which has the structure of a co-reaction product of 0.75 to 1.25 carboxyl equivalents of unsaturated fatty acids, rosin acids or mixtures thereof having an iodine unsaturation number by the ASTM D1467-57T test method of from 50 to 220, and 1.0 hydroxyl equivalents of a copolymer of a styrene monomer and an allyl alcohol monomer may be prepared by heating the reactants together at a temperature from 50 DEG C. to the reflux temperature of the system. The adduct may be formed in the presence of not more than 2% by weight of iodine (based on the reactants) and if desired, in the presence of a solvent. Lists of components (a), styrene monomers, allyl alcohol monomers, unsaturated fatty acids and rosin acids are given. The adducts may be employed in coating compositions such as paints by rendering the adducts water-soluble and then converting them into aqueous systems. The adducts may be made water-soluble by forming their salts by treatment with an alkali metal base, ammonia or an amine preferably in the presence of water and a water-miscible organic co-solvent. Lists of bases &c. and co-solvents are given. In the examples an adduct is prepared from a soya fatty acid ester of a styrene-allyl alcohol copolymer and maleic or fumaric acid either in the presence or absence of iodine. Coating compositions are formed from the ethylamine, ammonium or sodium salts of such adducts, the pigments and fillers added being selected from titanium dioxide, magnesium silicate, red iron oxide, lithopone and barytes.ALSO:Surfaces, e.g. metals, brick, ceramics, wood, plaster, paper, leather, plastics, are coated with a solution in an organic or aqueous solvent medium of an adduct of (a) an a ,b -ethylenically unsaturated carboxylic acid, anhydride or partial ester thereof containing the structure <FORM:1023291/B1-B2/1> and (b) an ester of a copolymer of a styrene monomer and an allyl alcohol monomer which has the structure of a co-reaction product of 0,75-1,25 carboxyl equivalents of unsaturated fatty acids, rosin acids or mixtures thereof having an iodine unsaturation number by the ASTM D1467-57T test method of from 50-220, and 1,0 hydroxyl equivalents of a copolymer of a styrene monomer and an allyl alcohol monomer. The coating compositions are produced by rendering the adducts water-soluble by treatment with alkali metal bases, ammonia or amines, and then converting them into aqueous systems. In the examples ammonium, sodium and monoethylamine salts of maleinized or fumarized soya fatty acid esters of styrene-allyl alcohol copolymers in aqueous systems are pigmented with one of the following: titanium dioxide, red iron oxide and lithopone, if desired in the presence of magnesium silicate or barytes and the mixture after blending with a cobalt drier and defoaming agent, water and organic solvents, is applied to steel plates and panels. An enamel top coat may be applied.