A primer topcoat paint composition that can be applied to a surface without the need to apply separate primer and topcoat layer is provided. The primer topcoat paint composition includes a first acrylic copolymer that is not a styrene acrylic copolymer, a second acrylic copolymer that is a styrene acrylic copolymer, and water. Characteristically, the first acrylic copolymer is present in the primer topcoat paint composition in an amount by weight that is at least 5 times greater than that of the second acrylic copolymer percent based on total first acrylic copolymer and second acrylic copolymer solids.

A composite polymer process aid is provided. The process aid includes one or more inorganic mineral fillers and one or functionalized polymers. The functionalized polymers include at least one base polymer functionalized with an epoxy, hydroxyl, β-keto ester, β-keto amide, or carboxylic acid reactive functional group. The composite polymer process aid is in the form of a plurality of individual particles. At least a portion of the individual particles include both inorganic mineral fillers and the functionalized polymers. The composite polymer modifier is formed by a process of: i) blending an aqueous solution, an aqueous dispersion, an aqueous suspension, an aqueous slurry, or a dry powder of the mineral fillers with an aqueous solution, an aqueous dispersion, an aqueous suspension or an aqueous emulsion of the functionalized polymers to form an aqueous blend, and ii) powderizing the aqueous blend to form the composite polymer process aid.

The present invention relates to aqueous acrylic polymer latexes, which are suitable as binders in coating compositions for providing flexible roofing. The present invention also relates to coating compositions containing such binders, which are suitable for providing flexible roofing. The aqueous acrylic polymer latexes have a glass transition temperature T.sub.g of at most from −10° C., in particular at most −20° C., or, in case of a multi-stage polymer latex a weight average glass transition temperature T.sub.g of at most from −10° C., where the polymer of the acrylic polymer latex has a carbon polymer backbone formed by polymerized ethylenically unsaturated monomers M comprising acrylic monomers, and where the carbon polymer backbone bears functional groups of the formula (I) attached to carbon atoms of the polymer backbone *—C(═O)—O-[A-NH].sub.nH (I) where the asterisk indicates the atom attached to a carbon atom of the polymer backbone, n is an integer, the number average of n in all functional groups of the formula (I) being >1, in particular at least 1.1 or at least 1.2 or at least 1.3, and A is selected from the group consisting of 1,2-ethandiyl or 1,2-propandiyl, where the functional groups of the formula (I) contribute to the total weight of the polymer in the acrylic polymer latex by 0.1 to 10% by weight.

The present invention relates to a modified polyvinyl butyral material, comprising a polyvinyl butyral composite material, a filler, an anti-hydrolysis agent, a first plasticizer, zinc stearate, calcium stearate, and a polymeric dispersant; wherein the polyvinyl butyral composite material is obtained by plasticizing a composition comprising polyvinyl butyral and a second plasticizer. The present invention also relates to a preparation method of the modified polyvinyl butyral material, a modified polyvinyl butyral product comprising at least one modified polyvinyl butyral layer prepared from a material comprising the modified polyvinyl butyral material, and the preparation method of the modified polyvinyl butyral product.

The present invention provides a polyvinyl chloride-based resin molded product obtained by molding a resin mixture containing 1 to 50 parts by weight of calcium carbonate having an average primary particle size of 0.01 to 0.3 μm and 5 to 18 parts by weight of an impact modifier per 100 parts by weight of a polyvinyl chloride-based resin, wherein a Charpy impact strength at 0° C. is 20 kJ/m.sup.2 or more, and a Vicat softening temperature is 85° C. or higher, and a method for manufacturing the polyvinyl chloride-based resin molded product.

An explosive sheet simulant that uses an ethylene vinyl acetate polymer combined with boron carbide or iron oxide for X-ray attenuating properties, and components of the mixture selected for predetermined flexural modulus combined with particle density, effective atomic number, X-ray transmission properties, or millimeter wave properties.

The present invention provides a crosslinked molded article having a lower compression set; and a method for producing a crosslinked molded article by injection molding, the method enabling shortening of one cycle in injection molding, the method being suitable for obtaining a crosslinked molded article having a lower compression set. The present invention relates to a method for producing a crosslinked molded article, comprising melt-kneading a polymer composition containing a polymer having a terminal double bond, a hydrosilyl group-containing compound (Y) having at least two hydrosilyl groups per molecule, a platinum-based catalyst (Z) for hydrosilicon crosslinking, and a reaction inhibitor (D), subjecting the polymer composition to injection molding in a mold, performing primary crosslinking in the mold, removing the primary-crosslinked molded article from the mold, and then performing secondary crosslinking in a heat medium.

Methods and systems are provided for a composite material. In one example, the composite material includes a polymer base reinforced with a powder formed from pupunha fibers. The resulting composite material is provided as pellets for further processing.

Methods and systems are provided for a composite material. In one example, the composite material includes a polymer base reinforced with a powder formed from pupunha fibers. The resulting composite material is provided as pellets for further processing.

Embodiments relate to a polyimide-based composite film, which comprises a base film comprising a polyimide-based resin; and a functional layer disposed on the base film, wherein when the side of the functional layer located opposite to the side in contact with the base film is referred to as a first side and when the side of the base film located opposite to the side in contact with the functional layer is referred to as a second side, the adhesiveness index represented by Equation 1 is 3.5 or less.