Abstract: A composition comprises (a) a binder component which comprises (1) 5 to 100 weight percent of at least one natural oil derived polyol having at least about 50 percent primary hydroxyl groups and (2) sufficient additional polyol different from a natural oil derived polyol to make 100 percent wherein the natural oil derived polyol has an average of from 1.5 to 3 hydroxyl groups per molecule and an equivalent weight of from 200 to 5000; and (b) a crosslinking component reactive with hydroxyl groups.

Abstract: In a curable coil coating composition comprising a mixture of: (a) a curable polyester that is a liquid at room temperature, (b) a cross-linking agent; and (c) a solvent; the improvement comprising preparing the polyester from a composition comprising a mixture of 1,3- and 1,4-cyclohexane dimethanol wherein the molar ratio of the 1, 3 isomer to the 1, 4 isomer is from about 60:40 to about 5:95. Cured coil coatings prepared from these compositions exhibit an excellent combination of flexibility and hardness.

Abstract: The present invention relates to a peroxide-curable silicone rubber composition which, when cured, exhibits a reduced modulus and improved tear strength relative to prior art systems without sacrificing other desirable properties, such as high tensile strength of the cured rubber or storage stability of the uncured rubber base, said composition comprising:(A) 100 parts by weight of a diorganopolysiloxane gum;(B) 10 to 75 parts by weight a reinforcing filler;(C) a polybutylene oligomer having a number average molecular weight of 200 to less than 900 and having functionality selected from the group consisting of epoxy, alkoxyphenylene, hydroxyl, carboxyl, anhydride and fully saturated; and, optionally,(D) a hydroxy-terminated diorganopolysiloxane having a degree of polymerization of 2 to 50.

Abstract: There is disclosed a method for treating and protecting a substrate, said method comprising coating the surface of said substrate with a composition comprising a blend of(A) a polydimethylsiloxane polymer having a viscosity at 25.degree. C. of 5 to 100,000 cS; and(B) a polyisobutylene oligomer having a number average molecular weight of 200 to 550. The treatment imparts an aesthetically pleasing appearance to the surfaces of plastic, rubber or leather substrates whereby surface gloss is enhanced, but not excessively, as is the case for a comparable all-silicone treating agent.

Abstract: There is disclosed a method for treating and protecting a substrate, said method comprising coating the surface of said substrate with a composition comprising a blend of(A) a polydimethylsiloxane polymer having a viscosity at 25.degree. C. of 5 to 100,000 cS; and(B) a polyisobutylene oligomer having a number average molecular weight of 200 to 550. The treatment imparts an aesthetically pleasing appearance to the surfaces of plastic, rubber or leather substrates whereby surface gloss is enhanced, but not excessively, as is the case for a comparable all-silicone treating agent.

Abstract: A composition is disclosed, said composition comprising(A) a polydimethylsiloxane having a viscosity greater than about 2 cS at 25.degree. C.; and(B) a polyisobutylene oligomer having a number average molecular weight of about 200 to about 3,000 and having at least one end terminated with an epoxy-containing group, the weight ratio of said polydimethylsiloxane (A) to said polyisobutylene (B) being in the range 1:99 to 99:1.

Abstract: An aqueous emulsion composition suitable for treating cellulosic or masonry surfaces to render them water repellent is disclosed, said composition comprising:(i) an alkoxysilane of the formulaR.sub.n Si(OR').sub.4-nwherein R is an alkyl radical, an alkenyl radical, phenyl, chloropropyl or trifluoropropyl, n is 1 or 2 and R' is an alkyl radical having 1 to 6 carbon atoms;(ii) a silane coupling agent of the formulaR".sub.m R'".sub.p Si(OR').sub.4-m-pwherein R" is selected from the group consisting of amino and quaternary ammonium organofunctional groups, R'" is an alkyl radical having 1 to 4 carbon atoms, R' has its previously defined meaning, m is 1 or 2 and p is 0 or 1, with the proviso that m+p is 2 or less and the molar ratio of said alkoxysilane (i) to said silane coupling agent (ii) is 0.5:1 to 3:1; and (iii) a polyisobutylene polymer, and preferred emulsions of the invention further comprising a wax component.

Abstract: A method for imparting corrosion resistance to a metal substrate comprising coating said substrate with a moisture-curable silicone composition is disclosed. The composition consists essentially of a tetrafunctional or hexafunctional silicone polymer (I) which is modified with a liquid organohydrogenpolysiloxane (II) such that, when the functional groups of (I) are alkoxy radicals, the organohydrogenpolysiloxane contains at least 4 silicon hydride groups per molecule and when the functional groups of (I) are oxime groups, the organohydrogenpolysiloxane contains at least 5 silicon hydride groups per molecule.

Abstract: A curable coating composition, which provides excellent corrosion protection to metals, is disclosed. The composition comprises (I) a reaction product (or blend) of a resinous copolymeric siloxane solution with a liquid organohydrogenpolysiloxane, (II) a hydroxy-functional diorganopolysiloxane, (III) an organosilane, (IV) a trialkyl orthoformate, (V) an organic titanate and (VI) a condensation catalyst. High solids compositions of the present invention can be applied by conventional siphon cup spray equipment and have an extended bath life relative to prior art formulations of this type.