Abstract: A composition for imparting fire-resistance to laminating interlayers comprising (a) a plasticizer blend of a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming component is the major constituent; (b) a nucleating agent such as fumed silica, for dispersing fire decomposition products of the interlayer; and (c) a heat reactive bonding resin.

Abstract: A fire-resistant thermoplastic composition comprising polyvinyl butyral resin and a compatible mixture in an amount sufficient to provide fire-resistant properties to such composition which includes (a) a plasticizer blend of a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming component is the major constituent; (b) a nucleating agent such as fumed silica for dispersing the fire decomposition products of the composition; and (c) a heat reactive bonding resin.

Abstract: An interlayer of polyvinyl butyral resin containing a compatible mixture of additives dispersed therein providing fire-resistant properties thereto, said mixture comprising a plasticizer blend of (a) a char-forming component, such as an organic phosphate, and an oxygen sequestering agent, such as an organic phosphite, wherein the char-forming agent is the major constituent; (b) a nucleating agent such as fumed silica for dispersing the fire decomposition products of the interlayer; and (c) a heat reactive bonding resin such as silicone resin.

Abstract: In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C.sub.16 to C.sub.20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

Abstract: In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C.sub.16 to C.sub.20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

Abstract: A plasticizer blend for polyvinyl butyral (PVB) comprising a monoester of a glycol and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule and a multiester of an alcohol having 2 to 4 hydroxyl groups and said unsaturated fatty acid, the monoester being present in the blend on a weight basis in an amount equal to or greater than the multiester. The low temperature penetration resistance and adhesion properties of PVB sheet plasticized with such blend is improved without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in contact therewith in a laminated glass assembly.

Abstract: In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C.sub.16 to C.sub.20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

Abstract: Low temperature impact delamination of laminates containing adjacent layers of polycarbonate or polyacrylate and polyvinyl butyral is overcome by a flexible, hydrophobic, adhesive coating of poly-vinylidene chloride or urethane acrylate resin at the interface between the polycarbonate or polyacrylate and the polyvinyl butyral.

Abstract: A glass fiber bonding composition suitable for the production of insulation materials comprises a novolac, polyunsaturated fatty acid, and a polyoxyethylene adduct.

Abstract: Improved molding compositions and a dry blend process for preparing same, such compositions being especially adapted for shaping into packaging materials and comprising a blend of a nitrile polymer and a member selected from the group consisting of unsaturated fatty acid aldehydes, and esters formed by the reaction of a short chain olefinic alcohol with a fatty acid or cyanuric acid.

Abstract: A process for reducing free acrylonitrile monomer in nitrile polymers during melting which involves having an effective amount of an unsaturated fatty acid or a glyceride of oleic, linoleic and linolenic acid or compounds such as safflower and linseed oils as an acrylonitrile scavenger in admixture with the polymer during melting. Shaped products such as preforms, containers, film, sheet, etc., formed from such melt are well suited for packaging food, beverages, pharmaceuticals, cosmetics, etc., in that residual acrylonitrile monomer in the walls of such products is minimal.

Abstract: Improved molding compositions and a dry blend process for preparing same, such compositions being especially adapted for shaping into packaging materials and comprising a blend of a nitrile polymer and a member selected from the group consisting of unsaturated fatty acid aldehydes, and esters formed by the reaction of a short chain olefinic alcohol with a fatty acid or cyanuric acid.

Abstract: Improved molding compositions and a dry blend process for preparing same, such compositions being especially adapted for shaping into packaging materials, and comprising a blend of a nitrile polymer and an unsaturated fatty acid compound.

Abstract: A process for reducing free acrylonitrile monomer in nitrile copolymers during melting which involves having an effective amount of an acrylonitrile scavenger selected from the group consisting of unsaturated fatty acid aldehydes, and esters formed by the reaction of a short chain olefinic alcohol with a fatty acid or cyanuric acid in admixture with the copolymer during melting. Shaped products such as pellets, preforms, containers, film, sheet, etc., formed from such melt are well suited for packaging food, beverages, pharmaceuticals, cosmetics, etc., in that residual acrylonitrile monomer in the walls of such products is reduced over that present in the absence of such a scavenger.

Abstract: An improved method for forming thermoplastic articles from high nitrile polymers by injection molding which method comprises initially charging the high nitrile polymer to a vacuum hopper system wherein a vacuum is applied and from which it is fed to a reciprocating screw injection molding machine for formation of said articles.

Abstract: High nitrile polymers modified with the addition of selected amounts of low molecular weight polyethylene have improved processing properties including increased melt flow and significantly inhibited color formation when processing at high shear and high temperatures.

Abstract: A method for compounding a nitrile polymer with a formaldehyde compound in order to reduce the extractable HCN content of the nitrile polymer which process comprises blending a formaldehyde compound and a particulate nitrile polymer at a temperature in the range of from 125.degree.F. to 300.degree.F. (52.degree.C. to 149.degree.C.) and then purging the blend.

Abstract: Disclosed herein are high nitrile polymers which have been compounded with a modifier which is a combination of (1) a C.sub.12 to C.sub.28 saturated aliphatic fatty acid ester of glycerol or sorbitan and (2) a polyoxyethylene sorbitan ester. The amount of modifier used is in the range of from 0.01 to 1.0 percent by weight based on the weight of the nitrile polymer. The compounded polymers exhibit lower melt viscosity and increased melt flow. The modifiers also provide improved clarity, gloss and, in certain instances, articles molded from the compounded nitrile polymer exhibit lower residual monomer levels.