Abstract: Thermoplastic elastomer resins are described which comprise vinyl halide grafted to crosslinked acrylic latex particles comprising predominantly acrylate-containing, crosslinked polymer chains derived from(A) at least one acrylate monomer of the formulaCH.sub.2 .dbd.C(R.sub.1)C(O)OR.sub.2 (I)wherein R.sub.1 is hydrogen or methyl; and R.sub.2 is an alkyl group containing from 1 to 29 carbon atoms, an alkoxy alkyl or alkyl thioalkyl group containing from 2 to about 7 carbon atoms, or a cyano alkyl group containing from 2 to about 7 carbon atoms; and(B) at least one alpha, beta-unsaturated dicarboxylic acid, provided that the dicarboxylic acid repeating units are optional when the TPE resin contains less than about 35% by weight of vinyl halide.

Abstract: This invention discloses an improved method for powder PVC extrusion using particulate PVC resin specified herein which enables smooth, dull surfaces for extrudates under broad processing conditions, in particular at relatively lower shear and temperature. The resins are characterized as having an average particle size ranging from 50 to 125 microns, a DOP porosity of from about 0.27 cc/gm to about 0.5 cc/gm, and a friability rating of 5 or less, preferably 2 or less depending on the stock temperature range during extrusion.

Abstract: Flexible or semi-rigid articles are formed from copolymers of vinyl halide monomers and an adhesion-promoting comonomer are directly painted. The invention also pertains to an article consistng of a metal, plasic or wood component placed in intimate contact with the melt-processed PVC copolymer composition, intimate contact occurring in the melt state, said copolymer comprising preferably 40-60 parts by weight of a vinyl halide monomer per 100 weight parts copolymer and a (meth)acrylate adhesion-promoting comonomer, said copolymer exhibiting high specific adhesion to polar metals and polar polymer substrates.

Abstract: CPVC compositions, pipe, and a method of preparing a pipe are disclosed and comprise CPVC having 63% to 70% by weight chlorine and preferably 65% to about 69% chlorine; a high rubber impact modifier comprising a graft copolymer of a rubbery polydiene and one or preferably more than one hardening monomer selected from a group consisting of a vinyl aromatic monomer, a (meth)acrylate, and a (meth)acrylonitrile monomer including mixtures. Said graft copolymer exhibits a Shore D hardness of less than about 64, and preferably between about 35 and 45; and a chlorinated polyethylene containing between 30% and 40% chlorine by weight, compression molded placques derived from the powder composition exhibit a minimum tensile strength, modulus, izod impact strength, Tg and dynamic thermal stability specified herein. A pipe extruded directly from said composition meets ASTM-D2846 and exhibits unexpected ductility down to 20.degree. F. (-6.6.degree. C.) under fixed drop dart impact testing.

Abstract: A process for making an elongate louver or assembly of louvers having an improved multi-layer louver configuration the improvement providing combining a base layer with an opacified pearlescent outer layer having a claimed range of opacity which substantially or completely occludes an base layer, the increased opacity substantially reduces or eliminates perceptible non-uniformity in coloration, shade change and thickness of the outer layer, while improving resistance to yellowing, processing characteristics, and raw material cost economics.

Abstract: Thermoplastic elastomer resins are described which comprise vinyl halide grafted to crosslinked acrylic latex particles comprising predominantly acrylate-containing, crosslinked polymer chains derived from(A) at least one acrylate monomer of the formulaCH.sub.2 .dbd.C(R.sub.1)C(O)OR.sub.2 (I)wherein R.sub.1 is hydrogen or methyl; and R.sub.2 is an alkyl group containing from 1 to 20 carbon atoms, an alkoxy alkyl or alkyl thioalkyl group containing from 2 to about 7 carbon atoms, or a cyano alkyl group containing from 2 to about 7 carbon atoms; and(B) at least one alpha, beta-unsaturated dicarboxylic acid, provided that the dicarboxylic acid repeating units are optional when the TPE resin contains less than about 35% by weight of vinyl halide.

Abstract: A process for preparing a particulate vinyl polymer resin and vinyl polymer resin derived therefrom wherein, comprising polymerization in the presence of a dispersant or graft dispersant having no ionic side groups, optionally containing terminal functional groups, said dispersant is derived from repeating units of .alpha.,.beta.-unsaturated ester(s) of acrylic and/or methacrylic acid and having a molecular weight average of from about 500 to about 50,000.

Abstract: Thermal stability of vinyl halide polymers is enhanced by the use of dienophiles such as N-alkyl maleimides, and bis compounds thereof, disclosed herein. The maleimides and bis compounds thereof produce synergistic results in terms of thermal stability of vinyl halide polymers when used in conjunction with conventional metal-containing thermal stabilizers. Environmental concerns are abated and certain other advantages are realized if the maleimides disclosed herein are used in conjunction with conventional nonmetallic thermal stabilizers to stabilize vinyl halide polymers against heat deterioration. Bis compounds of the N-alkyl maleimides disclosed herein, when used as thermal stabilizers for vinyl halide polymers, promote crosslinking without degrading the vinyl halide polymer.

Abstract: Blend compositions are provided comprising first polyvinyl chloride and a second polyvinyl chloride wherein the inherent viscosity (I.V.) of the second polyvinyl chloride, measured in accordance with ASTM1243 is at least about 0.2 units higher than the I.V. of the first polyvinyl chloride. Preferably the I.V. of the second polyvinyl chloride is from 0.2 to 1.0 units higher than the I.V. of said first polyvinyl chloride, with the most preferred difference in I.V. (.DELTA.I.V.) being 0.35 to 0.65 units so as to yield a balance of property improvements including impact resistance, heat distortion temperature, melt flow and melt viscosity. The compositions also can further comprise melt flow enhancers and/or Tg enhancing agents.

Abstract: An elongate substantially rectangular louver or assembly of louvers each comprising an elongate conformable web sleeve or web envelope which substantially or completely surrounds and conforms generally to the periphery of a slat inserted therein and the louver has a depending means for removable attachment to a louver assembly support and the slat is removably attached to the web sleeve or web envelope.

Abstract: An elongate louver or assembly of louvers each comprising an improved multi-layer louver configuration comprising an opacified pearlescent outer layer having a claimed range of opacity which substantially or completely occludes an base layer, said increased opacity substantially reduces or eliminates perceptible non-uniformity in coloration, shade change and thickness of the outer layer, while improving resistance to yellowing, processing characteristics, and raw material cost economics.