Abstract: A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising a compound containing electron donating substituents with a structure: wherein D1 and D2 are selected individually from and R, R2, R3, R4, R5, R6, and R7 individually are hydrocarbon or substituted hydrocarbon groups containing 1 to 20 carbon atoms and R2, R3, R4, R6, and R7 may be hydrogen; R4 may be —NR2; and wherein groups R1 and R2, R2 and R3, R3 and R4, R3 and R5, and groups R6 and R7 may be joined to form a cyclic structure.

Abstract: A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising a compound containing electron donating substituents with a structure: wherein D1 and D2 are selected individually from and R, R2, R3, R4, R5, R6, and R7 individually are hydrocarbon or substituted hydrocarbon groups containing 1 to 20 carbon atoms and R2, R3, R4, R6, and R7 may be hydrogen; R4 may be —NR2; and wherein groups R1 and R2, R2 and R3, R3 and R4, R3 and R5, and groups R6 and R7 may be joined to form a cyclic structure.

Abstract: Disclosed are compositions having as the polymeric component a blend of from about 55 to about 85% by weight of a rubber modified polystyrene and from about 45 to about 15% by weight of at least one thermoplastic styrenic block copolymer. The thermoplastic styrenic block copolymer has a styrene content of at least about 70% by weight.

Abstract: Injection-moldable thermoplastic polyurethane compositions with reduced cycle time contain a cycle time reducing amount of a low molecular weight, high softening point, poly(hydroxyl group)-containing resin, preferably a phenolic modified terpene resin.

Abstract: The present invention relates to thermal insulation gas mixtures comprising cyclopentane and argon for filling cavities.

Abstract: A continuously variable runner length manifold is provided for an internal combustion engine. The continuously variable runner length manifold includes a housing having an inlet port and a plurality of outlet ports defined by a plurality of stacked manifold sections. A plurality of runner members are rotatably mounted within the housing. The runner members include wall portions which combine with the housing to define a plurality of runners in communication with a plenum and a respective one of the outlet ports. The runners have a length which is continuously variable upon rotation of the runner members relative to the housing.

Abstract: The present invention provides a process for making articles of manufacture, as well as the articles themselves, comprising thermoplastic nylon materials and thermoplastic polyurethane blends capable of adhering to the thermoplastic nylon materials, wherein the thermoplastic polyurethane blends comprise:a) 3 to 200 parts of a terpolymer of styrene/.alpha.-methylstyrene/acrylonitrile/C.sub.1 -C.sub.6 alkyl acrylate with a glass transition temperature (Tg) below 0.degree. C.;b) 100 parts of a thermoplastic polyurethane produced from a diisocyanate, a C.sub.2 -C.sub.10 diol, and a polyether and/or polyester-based polyol; andc) 0 to 50 parts of various additives including lubricants, pigments, stabilizers, etc. The articles of manufacture may be configured as power tool housings, luggage handles, gear shifts, automotive pedals, etc.

Abstract: The subject invention pertains to an apparatus with the continuous expansion of thermoplastic minipellets, particularly polypropylene. The apparatus comprises a mixing means for mixing the thermoplastic minipellets in water to form a slurry, which is connected to a pressurizing means to form a flow of pressurized slurry to a junction which in trains a blowing agent to form a pressurized slurry mixture, which is connected to a heating means to heat the pressurized slurry mixture. Once the pressurized slurry mixture is impregnated with the blowing agent, it flows through water more orifice plates for expansion of thermoplastic minipellets into an expansion vessel.

Abstract: Disclosed is a method for customizing a thermoplastic resin in which a thermoplastic resin body is at least partially coated with a thermoplastic coating composition comprising an additive component and a polymeric component. The thermoplastic resin body is at a temperature that is above the onset temperature of the melt processing range of the coating composition. After the coating is applied, the resin body is cooled to solidify the coating composition. Customized thermoplastic resins may be produced more efficiently using the present method than by conventional methods. The customized thermoplastic resins produced according to the invention may be heated to above the onset temperature of the melt processing range of the resin body, mixed to form a substantially uniform mixture and formed into an article.

Abstract: Thermoplastic polyurethanes are prepared by reacting (a) isocyanates with (b) compounds reactive toward isocyanates, in the presence or absence of (c) chain extenders, (d) catalysts and (e) customary auxiliaries and additives and adding crosslinked polyurethanes in comminuted form before, during and/or after the reaction.

Abstract: In a process for producing expandable styrene polymers containing graphite particles by polymerization of styrene in aqueous suspension in the presence of two peroxides which decompose at different temperatures, the peroxide which decomposes at lower temperature is multifunctional and on decomposition forms two or more linked polymer chains.

Abstract: Stabilized polyurethanes comprise as stabilizers diglycidyl terephthalate and/or triglycidyl trimellitate in combination with UV filters. Corresponding stabilizer concentrates are also provided.

Abstract: In a process for preparing polyether polyols containing aromatics by molecular addition of alkylene oxides to H-functional initiators at from 70.degree. C. to 135.degree. C. and pressures of from 0.1 MPa to 1.0 MPa, the alkoxylation is carried out using at least one initiator comprising at least 95% by weight of 2,3 and 3,4 isomers of tolylenediamine, from 0.5 to 4% by weight of 2,4 and 2,6 isomers of tolylenediamine and from 0.1 to 1.5% by weight of more volatile fractions from tolylenediamine production. The polyether polyols prepared by this process can be used as component of a polyol mixture for producing rigid polyurethane foams.

Abstract: In a process for producing sheet-like polyurethane moldings by impregnation of porous sheets with a polyurethane system and subsequent reaction of the polyurethane system in a mold, the porous sheet is first fully impregnated with a polyurethane component, then fully impregnated with the other polyurethane component and the molding is then produced in a heated mold by reaction of the polyurethane components.

Abstract: There is now provided a closed cell rigid polyisocyanate based foam blown with a C.sub.1 -C.sub.4 hydrofluorocarbon and formic acid as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a polyol composition and a froth foaming mixture having good flow by employing a polyol and formic acid in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon having a boiling point of 300K or less as co-blowing agents. The polyol composition advantageously has an average OH number of less than 400 and an average functionality of greater than 4, which when reacted with the isocyanate in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon, yields a rigid closed cell polyisocyanate based dimensionally stable foam having a fine cell structure.

Abstract: Disclosed is a solvent-based cement for bonding joints of polyvinyl chloride pipe and fittings. The cement of the composition contains at least about 10% by weight of a polyvinyl chloride resin, at least about 2% by weight of a solid alcohol having a melting point above at least about 20.degree. C., and at least about 10% by weight of a solvent or a mixture of solvents. There is also provided a method of joining two pieces of thermoplastic material, such a poly(vinyl chloride) piping and fittings, and the product piece having one or more joints formed thereby.

Abstract: Injection-moldable thermoplastic polyurethane compositions with reduced cycle time contain a cycle time reducing amount of a low molecular weight, high softening point, poly(hydroxyl group)-containing resin, preferably a phenolic modified terpene resin.

Abstract: Disclosed is a method for customizing a thermoplastic resin in which a thermoplastic resin body, a thermoplastic polymeric component, and an additive component are provided in a container with means for mixing. The thermoplastic resin body is at a first temperature that is above the onset temperature of the melt processing range of the polymeric component. A coating that is a mixture of the additive component and the polymeric component is formed on at least a portion of the thermoplastic resin body. After the coating is applied, the resin body is cooled to solidify the coating composition. The customized thermoplastic resins produced according to the invention may be heated to above the onset temperature of the melt processing range of the resin body, mixed to form a substantially uniform mixture and formed into an article.

Abstract: Self-extinguishing thermoplastic polyurethanes contain, as flameproofing agents, one or more organic phosphates and/or one or more organic phosphonates, preferably as a mixture together with melamine derivatives.

Abstract: Describes a deinking agent composition and a method for deinking wastepaper printed with electrostatic ink or mixtures thereof with wastepaper printed with impact ink in which a combination of nonionic surfactants are added to an alkaline slurry of paper fibers. The surfactants are a first nonionic surfactant represented by the formula:R--Ph--(OC.sub.2 H.sub.4).sub.m --(OC.sub.3 H.sub.6).sub.n --(OC.sub.4 H.sub.8).sub.p --R.sup.1and a second nonionic surfactant represented by R.sup.5 --C.sub.6 H.sub.4 O--(C.sub.2 H.sub.4 O).sub.t --H, block copolymers of ethylene oxide and propylene oxide or mixtures of such second nonionic surfactants. R is an aliphatic hydrocarbon group containing from 8 to 10 carbon atoms, Ph is phenylene, R.sup.1 is chloro or phenoxy, R.sup.5 is C.sub.8 -C.sub.13 alkyl, the sum of m, n, and p is a number between 1 and 10, and t is a number between 1 and 9. The deinking agent composition also contains optional nonpolar solvent(s).