Abstract: A composite article including a particle-loaded fibrillated polytetrafluoroethylene web with a reinforcing screen or scrim partially embedded therein.

Abstract: A silicone rubber composition having improved mold release properties comprising (A) silicone rubber base compound, (B) organopolysiloxane having no aliphatic unsaturated groups, (C) higher fatty acid or higher fatty acid metal salt, (D) water, and (E) curing agent.

Abstract: Disclosed herein is a breathable film and a breathable, cloth-like film/nonwoven composite made from the breathable film which is stretch-thinned and bonded to a fibrous polyolefin nonwoven web. Certain thermoplastic films such as, for example, linear low density polyethylene films are difficult to thermally bond to, for example, polypropylene nonwoven webs due to the incompatibility of the two polymers. The present invention incorporates a bonding agent into one or both of the two layers thereby making it easier to thermally bond the two layers together. Processes for forming the various composite are also disclosed.

Abstract: The articles of this invention have increased resistance to moisture induced delamination at a bond line comprising a substrate, a second layer an dan adhesive. The increased resistance to moisture and increase in bond strength between the adhesive, the substrate and the second layer is produced through a novel adhesive. The adhesive after spraying cools to below the softening point of the components but retains sufficient liquidity to fully wet or to penetrate the second layer causing the layers to be bonded to the film substrate through intimate adhesive bonds or by bonding through a physical entrapment. The physical entrapment of the nonwoven layer substantially prevents moisture-induced debonding or delamination.

Abstract: An artificial snowseed in the form of granules of a super water-absorbing polymer already coated with a fluorine-containing material and/or a silicone oil. The granules can retain the original spherical form after absorption of water without sticking to each other. Further the present invention provides a method for making artificial snow comprising freezing the above artificial snowseed after absorption of water.

Abstract: Provided is a rubber composition obtainable by kneading a mixture at a maximum temperature between about 120.degree. to about 170.degree. C. The mixture includes:100 parts by weight of a solution polymerized diene rubber;about 5 to about 100 parts by weight of silica;about 1 to about 15 parts by weight of a silane coupling agent; andabout 1 to about 15 parts by weight of a polyalkylene glycol having a weight average molecular weight of about 200 to about 20,000.The invention also provides a method for making the rubber composition, a tire tread made from the rubber composition, and a tire made from the rubber composition.

Abstract: An extruder screw having a plurality of plasticating sections sufficient for plasticating polymeric materials of different bulk density.

Abstract: Disclosed herein is a breathable film and a breathable, cloth-like film/nonwoven composite made from the breathable film which is stretch-thinned and bonded to a fibrous polyolefin nonwoven web. Certain thermoplastic films such as, for example, linear low density polyethylene films are difficult to thermally bond to, for example, polypropylene nonwoven webs due to the incompatibility of the two polymers. The present invention incorporates a bonding agent into one or both of the two layers thereby making it easier to thermally bond the two layers together. Processes for forming the various composite are also disclosed.

Abstract: Colorless, amorphous polyamides, their blends or alloys, and the molded articles with high alternate bending strengths that can be produced from them, are made available; they are preferably made up of aliphatic diamines and aliphatic dicarboxylic acids, and at the same time have high strength, high rigidity, high heat distortion, and good solvent resistance.

Abstract: The present invention generally relates to an asbestos-free roof coating composition which comprises roof-coating asphalt cutback, an amine-based dispersion aid and various optional ingredients including fillers to obtain the desired bulk. The dispersion aid is an organic or inorganic acid neutralized salt of a polyamine of the formula:R--NH.sub.2wherein R is a C.sub.3 C.sub.26 coco-alkyl radical.

Abstract: In the process for the surface oxidation of polyarylene thioethers, the surface of the material to be oxidized is brought into contact with an ozone-containing gas or a liquid.The materials prepared by the process can be used in aircraft construction, automobile construction and chemical apparatus construction.

Abstract: In the process for the preparation of aromatic sulfur-containing polymers, the polymer is formed from a prepolymer having halogen end groups. The process can be carried out in two stages: 1. Preparation of the prepolymer and 2. conversion of the prepolymer into the polymer. The process is particularly suitable for the preparation of polyphenylene sulfide.

Abstract: A process for making a thermoformable conductive plastic laminate for use in making plastic parts adapted for electrostatic spray painting of a uniform high quality paint finish includes forming a matte release coated casting sheet, casting an electrically conductive polymer in thin film form on the casting sheet, drying to form a conductive primer coat, and transfer-laminating the conductive coating to a thin, thermoformable plastic face sheet. The matte release coat has a fine particulate filler that transfers a micro-toughened matte surface to the conductive primer coat. The conductive primer includes a polyester resin containing a fine particulate conductive material such as carbon black and, preferably, an anti-blocking agent such as fumed silica. The primer coated face sheet can be thermoformed and bonded to a underlying plastic substrate panel.

Abstract: Wood products impregnated with from 30 to 80% of a polymerizable monomer selected from the group consisting of hexanediol diacrylate and hexanediol dimethacrylate have excellent indent resistance. The wood products are impregnated with the monomer solution by placing the wood under a vacuum to remove air, contacting the wood with a monomer solution containing a polymerizable hexanediol diacrylate and/or hexanediol dimethacrylate monomer and from 0.5 to about 2 percent of a thermally activated free radical source as a polymerization initiator for a period sufficient to achieve the desired polymer loading. The wood is then heated under pressure to polymerize or cure the monomers.

Abstract: An inexpensive block polymer which is effectively available in various uses with regard to hot-melt resin compositions, pressure sensitive adhesives, carriers for pressure sensitive adhesives, and the like. This block polymer has a structure including a polyvalent mercaptan segment at its center from which two or more polymer segments are radially extended. The number-average molecular weight of this polymer is in a range of 2,000 to 1,000,000, and the two or more polymer segments have two or more different compositions. This block polymer is obtainable by a process including two or more steps of radical polymerization of polymerizable monomer components having different compositions using a polyvalent mercaptan as a polymerization initiator.

Abstract: Multi-layer heat-shrinkable films in which at least one layer (A) is based on a polyolefin composition comprising a propylene copolymer and having particular crystallinity characteristics, and at least one layer (B) comprises a linear compolymer of ethylene with one or more .alpha.-olefins (LLDPE). The films are characterized by an optimum balance of physicomechanical properties, processability and sealability at low temperatures.

Abstract: A thermoplastic resin composition having excellent characteristics such as impact resistance and coatability is described. The thermoplastic resin composition contains a propylene based polymer and a graft copolymer having an olefin homo/co-polymer portion forming its main chain and a vinyl copolymer portion forming its branched portion. In the graft copolymer, the proportion of the olefin homo/co-polymer portion is 5 to 95% by weight, and the vinyl copolymer portion occupies the remaining weight. The vinyl copolymer portion of the graft copolymer has a hydroxyl group as a functional group. One of the olefin homo/co-polymer portion and the vinyl copolymer portion forms a dispersed phase in the other with a particle size of 0.001 to 10 .mu.m. Consequently, the graft copolymer assumes a multi-phase structure. The thermoplastic resin composition optionally further contains a thermoplastic elastomer.

Abstract: Mixtures comprising polyarylene sulfides and polyarylene sulfoxides or partially oxidized polyarylene sulfides containing sulfoxide groups can be thermally crosslinked in a targeted manner depending on sulfoxide content. A process for producing crosslinked polyarylene sulfide moldings is based on the use of the mixtures in the thermal shaping.

Abstract: Organic-inorganic composite particles which include a (meth)acrylic resin framework and a polysiloxane framework having in its molecule an organosilicon containing a silicon atom directly and chemically combined with at least one carbon atom of the (meth)acrylic resin framework, and also contain 25 wt % or more of SiO.sub.2 which constitutes the polysiloxane framework and have a mean particle diameter of .gtoreq.0.5 .mu.m. The particles have the mechanical resilience necessary to maintain a constant gap distance between a pair of members to be arranged with the correct gap distance between them, and the hardness and fracture strength necessary to maintain the gap constant with smaller numbers; and also do not readily cause physical damage to the members. The composite particles can be employed as spacers 8 for a liquid crystal display as they stand or with an adhesive layer formed on the surface.

Abstract: The invention relates to a shaped laminate, particularly an internal lining part for motor vehicles. The laminate (1) has a substantially stiff supporting sheet (2) of thermoplastic material. The latter is covered on at least one and preferably both sides with a surface layer (3, 4) in the form of a nonwoven fabric. The joint between the nonwoven fabric and the plastic sheet is a thermal bond. For forming the bond the nonwoven fabric at least partly and preferably completely is made from the same type of plastic as the sheet. The invention also relates to a process and an apparatus for producing the laminate. For forming the adhesive joint the sheet is heated on at least one side to a temperature in the adhesive range of the thermoplastic material, the sheet interior being kept at a lower temperature. As a result of this procedure the nonwoven fabric structure is protected during the adhesion and shaping process.