Abstract: Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of at least one rubbery elastomer by using a chromium-based catalyst composition that is formed by combining a chromium-containing compound, a hydrogen phosphite, and an organomagnesium compound.

Abstract: The invention pertains to a cross-linkable resin composition which is obtainable from the reaction of glyoxylic acid and a hydroxy and/or epoxy group-containing polymer in the absence of amino-containing cross-linkers, characterized in that 0.05-0.6 mole equivalent of glyoxylic acid is used per mole hydroxy group, with the epoxy groups being calculated as two hydroxy groups. The composition can be cross-linked at room temperature, is non-toxic, and is not susceptible to yellowing.

Abstract: A crosslinked coating composition that demonstrates excellent resistance to fuel, flame and high temperature in addition to good mechanical properties including high flexibility, high elongation and tensile strength, abrasion and pinch resistance is provided. The composition is based on a blend of HDPE homopolymers and high-VA-content EVA copolymers and is useful as an insulating material for wires or cables used in automotive gas-tank passthrough applications.

Abstract: A light diffusing adhesive comprising a mixture of a pressure-sensitive adhesive matrix having a refractive index of n1 filled with organic, polymeric microparticles having a refractive index n2, wherein the absolute difference in the refractive indices of matrix and microparticles, that is, |n1-n2| is greater than zero and typically in the range of 0.01 to 0.2. The weight ratio of matrix to microparticles, based on solids, is from about 1:1 to about 50:1, preferably from about 4:1 to about 25:1.

Abstract: There is provided a thermoplastic resin composition and interior or exterior parts for vehicle using thereof, which is excellent in flexibility, surface appearance, heat deformation property at heating and has low tackiness at a high temperature. The thermoplastic resin composition comprises 25 to 90 parts by weight of a (meth)acrylic ester copolymer (X), which is prepared by polymerizing 40 to 95% by weight of a (meth)acrylic ester, 0 to 40% by weight of a vinyl cyanide compound, not more than 60% by weight of an aromatic vinyl compound and 0 to 40% by weight of a monomer copolymerizable therewith, and has a glass transition temperature of not more than 20° C. and a gel content of not more than 50% by weight, 5 to 75 parts by weight of a copolymer (Y), which has a glass transition temperature or a melting point not less than 50° C.

Abstract: An impact resistant acrylic polymer pellet comprising an acrylic multi-layer polymer having at least one rubber-like elastomer layer (&agr;) as an inner layer and having a rigid polymer layer (&bgr;) as an outermost layer which is containing methyl methacrylate as a main component, wherein the proportion of parts insoluble in acetone including the polymer of the rubber-like elastomer layer (&agr;) is from 70 to 97% by weight per unit weight of the pellet, and a method for producing the same are disclosed. The pellet is excellent in handling property, and has high content of a rubber-like elastomer.

Abstract: The invention provides thermosetting coating compositions in which acrylic copolymers are used as carriers for fluorocarbon resins. The compositions have a combination of high fluorocarbon content, high solids content, and a low viscosity suitable for coil coating. Thus, the solids are borne in organic solvent systems which permit minimization of the viscosity and a moderate evaporation rate. The solvent system has a &dgr;H of from 1.7 to 2.6 (calories/cubic centimeter)½ and a &dgr;V of from 8 to 9.5 (calories/cubic centimeter)½ and is exemplified by a mixture of 4 or more of the following solvents: aliphatic ketones having from 4 to 10 carbon atoms, alkyl esters having a total of from 5 to 7 carbon atoms, aromatic acid esters having from 8 to 12 carbon atoms, lactones, and aromatic solvents.

Abstract: Gel-type copolymer beads are described which are useful as ion exchange resins such as those used in the treatment of power plant condensate water. The subject copolymer beads possess an interpenetrating polymer network of at least two polymer components including: (i) a first polymer component derived from a first monomer mixture comprising a first monovinylidene monomer having a styrenic content less than about 50 molar percent and (ii) a second polymer component derived from a second monomer mixture comprising: a second monovinylidene monomer having a styrenic content greater than about 50 molar percent and a second crosslinking agent. The ratio of the molar percent crosslinking agent of the first polymer component to the second polymer component is less than about 0.7. Methods for making the subject beads and methods for their use as ion exchange resins for treating aqueous solutions are also provided.

Abstract: A rubber-modified styrene type polymer excellent in transparency and excellent in impact strength and moldability, is presented.

Abstract: A hydrophilic coating composition for hydrophilically coating a metallic surface. The coating composition comprises a fluorocarbon-containing hydrophilic polymer comprising units of hydrophilic monomer and fluorocarbon-containing hydrophobic comonomer. The coating composition produces hydrophilic coatings on the metallic surface having a contact angle below about 50°.

Abstract: A polymer composition comprising a blend of (a) a grafted olefin rubber, (b) an ungrafted olefin rubber, (c) a copolymeric matrix and an optional (d) a grafted acrylate rubber is disclosed. The composition which is characterized in having a desirable balance of impact strength and low gloss is useful for molding and extrusion of articles for certain outdoor applications.

Abstract: A resin matrix with resistances to alkali and acid such as a fluorene-containing epoxy acrylate and/or a benzocyclobutene resin includes at least any one of insulative organic particles and insulative composite particles having an organic component and an inorganic component with the total amount of these particles being in the range of 5-50% by volume, wherein the insulative organic particles and the organic component of the insulative composite particles are allowed to be corroded by either alkali or acid, and wherein not less than 90% by volume of the insulative organic particles and insulative composite particles have a particle diameter in the range of 1-20 micrometers.

Abstract: A polyolefin resin composition comprising (a) 100 parts by weight of a polyolefin resin and (b) 0.05 to 1 part by weight of beads of a crosslinked polymer comprising (1) 5 to 99% by weight of a radically polymerizable monomer unit represented by the general formula (A): wherein R1 is hydrogen or a hydrocarbon group having 1 to 5 carbon atoms and R2 is a hydrocarbon group having 5 to 30 carbon atoms, (2) 0 to 94% by weight of a radically polymerizable monomer unit other than the monomer unit of the general formula (A), and (3) 1 to 20% by weight of a crosslinkable monomer unit, said crosslinked polymer beads having a critical surface tension of 40 dyne/cm or less.

Abstract: A vinyl chloride resin composition having a greatly improved processability without lowering the transparency wherein the gelation property of a vinyl chloride resin is improved with greatly decreased generation of ungelled substance; which comprises a vinyl chloride resin and 0.

Abstract: A polyolefin modified to contain a pendant polar chain structure of at least 200 molecular weight and which has at least one ester group and at least one hydroxyl and/or oxirane group is a useful adhesion-promoting modifier for polyolefin resins.

Abstract: A method for producing a hydroxyl-terminated (meth) acrylic polymer which comprises converting a halogen atom in a terminal structure of the general formula (1) —CH2—C(R1)(CO2R2)(X)  (1) wherein R1 is hydrogen or methyl, R2 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or aralkyl containing 7 to 20 carbon atoms, and X is chlorine, bromine or iodine, of a (meth)acrylic polymer obtained by polymerizing a (meth)acrylic monomer using an organic halide or a halogenated sulfonyl compound as an initiator and, as a catalyst, a metal complex with a central metal selected from the elements belonging to the groups 8, 9, 10 and 11 in the periodic table, into a hydroxyl-containing substituent. The present invention can provide, in an easy and simple manner, a (meth)acrylic polymer which is hydroxyl-terminated at both ends in a high proportion and which has been difficult to produce in the prior art. It can give a cured product with good curing characteristics.

Abstract: A rubber composition comprising: at least one hydrogenated nitrile rubber, and at least one thermoplastic polyolefin, wherein the weight ratio (hydrogenated nitrile rubber:thermoplastic polyolefin) is in the range from 95:0.5 to 50:50. The composition retains substantially the resistance to heat and chemicals and the mechanical properties characteristic of hydrogenated nitrile rubber upon curing.

Abstract: These articles relate to rubber compositions and laminates thereof. The laminates bring together materials not easily bonded to each other. The compositions comprise rubber and a resin component containing ethylene-vinyl acetate copolymer (EVA). The laminates are useful for providing a protective covering such as shelf or drawer liners.

Abstract: A fabricated article other than a film comprising a thermoplastic blend prepared from polymeric materials consisting of; (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 0.5 to 65 mole percent of (a) at least one aromatic vinylidene monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one aromatic vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and (2) from 99.5 to 35 mole percent of at least one aliphatic &agr;-olefin having from 2 to 20 carbon atoms; and (B) from 99 to 1 weight percent of at least one polymer made from monomer components comprising at least one &agr;-olefin having from 2 to 20 carbon atoms. These articles possess improved properties when compared to the properties of articles derived from the individual polymers comprising the blend.

Abstract: A resin composition which increases the copper peeling strength and improves the dielectric properties of electric circuit boards is disclosed. The resin composition comprises: (a) 20-100 parts by weight of a syndiotactic polystyrene, (b) 1-40 parts by weight of a functionalized syndiotactic styrene-based copolymer having microfoaming when being cured, (c) 1-40 parts by weight of an epoxy-styrene copolymer, and (d) 0-40 parts by weight of an additive.

Abstract: A curable composite material composition comprising (A) a polymerizable unsaturated compound, (B) a fiber reinforcing material and/or fiber, and (C) a polymerization initiator comprising an organic boron compound represented by the general formula (1) wherein R1, R2, R3 and R4 each independently represent an alkyl, aryl, allyl, aralkyl, alkenyl, alkynyl, silyl or heterocyclic group, a halogen atom, or a substituted alkyl, substituted aryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl or substituted silyl group, and Z+ represents a cation, and an acidic compound, as well as a curing process for the curable composite material composition which includes irradiating and/or heating the curable composite material composition.

Abstract: Polyethylene-based adhesive compositions which contain as little as 5 weight percent, and up to 35 weight percent of an acid-grafted metallocene polyethylene have superior peel strength to comparable compositions containing an acid grafted non-metallocene and EVA or EMA polyethylene. Compositions where the acid-grafted metallocene polyethylene component is based on a metallocene polyethylene having a melt-flow ratio of less than 6.53 and an Mw/Mn of greater than the melt flow ratio less 4.63 are as good adhesive compositions as those based on metallocene resins falling outside these parameters.

Abstract: A rubber-modified styrene type polymer excellent in transparency and excellent in impact strength and moldability, is presented.A rubber-modified styrene type polymer comprising from 1 to 15 parts by weight of a dispersed phase made of a rubber-like elastic material and from 99 to 85 parts by weight of a continuous phase made of a polymer comprising from 35 to 75 wt % of styrene type monomer units and from 65 to 25 wt % of (meth)acrylate type monomer units, wherein the rubber-like elastic material is a styrene (30 to 50 wt %)-butadiene (70 to 50 wt %) block copolymer, the weight average molecular weight (Mw) of the polystyrene portions of this block copolymer is from 45,000 to 75,000, and the ratio (Mw/Mn) of Mw to the number-average molecular weight (Mn) is from 1.20 to 1.80.

Abstract: An acrylic film or sheet made from a resin composition comprising 95 to 50 wt. % of an acrylic resin which comprises methyl methacrylate as a main component and has a glass transition temperature in the range of 40 to 105.degree. C., and 5 to 50 wt. % of a multilayer-structured acrylic polymer containing an elastomeric layer, wherein the polymer is dispersed in the acrylic resin, a molded article comprising a thermoplastic resin molded material and the above film or sheet which is adhered and unified with the surface of the molded material, and a method for the production of the above molded article are provided. This film or sheet is an excellent film for use in a simultaneous injection molding and lamination method.

Abstract: Thermoplastic elastomer compositions which have good high temperature end use and good oil swell resistance are made by blending a high melting thermoplastic polymer containing a non-polar rubber and a polar rubber. Alternatively, a high melting thermoplastic polymer containing a non-polar rubber or a polar rubber or both is blended with a polyolefin thermoplastic polymer containing a non-polar rubber, or a polar rubber, or both. The composition is dynamically vulcanized. The cured multi-component thermoplastic elastomer compositions exhibit good end use properties such as hardness, tensile strength, modulus, flexibility.

Abstract: An extrudable vinylidene chloride composition is useful in packaging films where controlled CO.sub.2 and O.sub.2 transmission rates benefit the packaging of products such as gassing cheese. The composition, and film made therefrom, comprises 100 parts by weight of at least one vinylidene chloride copolymer; between 4 and 15 parts by weight of a plasticizer; and between 4 and 15 parts by weight of an acrylate/styrene copolymer; wherein the total amount of plasticizer and acrylate/styrene copolymer comprises at least 9 parts by weight.

Abstract: Rubber-modified styrenic resin compositions of this invention comprise 90 to 30% by weight of rubber-modified styrenic resins (A) containing rubbery polymers dispersed with an average particle diameter of 0.3 to 2.0 .mu.m in the phase of styrenic polymers (C) and 10 to 70% by weight of styrene-(meth)acrylate ester copolymer resins (B) and, in said compositions, the content of (meth)acrylate ester units is 5 to 50% by weight and the toluene-insolubles (% by weight: X) and the rubber component (% by weight: Y) are present at a ratio (X/Y) in the range from 1.2 to 3.5. The compositions excel in appearance, scratch resistance, impact resistance and rigidity and are easy to fabricate.

Abstract: Disclosed is a biaxially stretched styrenic resin sheet obtained by biaxially stretching a resin composition comprising (A) a styrenic resin and (B) crosslinked styrenic fine particles having an average particle size of 0.5 to 15 .mu.m in an amount of from 0.001 to 1% by weight based on the resin composition. The resin composition may further comprise (C) a rubber modified styrenic resin containing a rubber component having an average particle size of 0.1 to 4 .mu.m in such an amount that the rubber component concentration attributed to the rubber modified styrenic resin is from 0.005 to 0.1% by weight based on the resin composition. The styrenic stretched sheets exhibit improved blocking resistance owing to fine unevenness uniformly formed on the surface thereof while retaining the transparency. Even when a number of the sheets or formings obtained therefrom are stacked, they are easily separated apart without blocking.

Abstract: The present invention relates to a process for the manufacture of a plastics product from a polyolefin resin using a plasticizer monomer system which is substantially non-polymerizable under the product shape forming, conditions used in the product manufacturing process and which acts as a plasticizer or processing aid under said shape forming conditions, while being substantially polymerizable subsequently so as to produce a product substantially free of liquid plasticizer. The plasticizer monomer is mixed with the polyolefin resin; and the mixture formed into a desired product form. Polymerization of the plasticizer monomer then provides a final product substantially free of liquid plasticizer.

Abstract: Melt processed linear polyethylenes are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and a quaternary ammonium cations, said surfactant being essentially free of halogens.

Abstract: Polyolefine-based mouldings and foils contain internal bonding additives which are enriched by migration at the plastic surface and which have their molecular structure bonding substituents of higher polarity on an oleophilic hydrocarbon radical. At least one part of these internal additives is hardened via its hydrocarbon radicals in the area of the plastic surface and prevented from further migrating, and so permanent adhesive bondings and/or coatings of the polyolefine surface may be obtained without additional preliminary treatments. Also disclosed is a process for furnishing solid polyolefine surfaces with such adherence-improving, immobilised additive (mixtures), and other auxiliary agents used for that purpose.

Abstract: The present invention is directed to particulate carriers useful as drug carries in a drug delivery system (DDS) and to pharmaceutical compositions making use of such carriers. The invention is characterized by the use, as the particulate carrier, of: graft copolymer (A) whose graft chain is poly N-alkylacrylamide chain, poly N-alkylmethacrylamide chain, etc.; and composition containing a combination of the graft copolymer (A) and at least one graft copolymer selected from the group consisting of graft copolymers (B-1) having polyacrylic acid or polymethacrylic acid as the graft chain and graft copolymers (B-2) having a polyvinyl amine compound as the graft chain.

Abstract: Polymer blends of at least one polar polymer are prepared by admixture with a poly(vinyl alcohol) and a (meth)acrylate copolymer also containing vinyl amide and/or unsaturated acid units. The ternary compositions have attractive processing and performance properties.

Abstract: A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.

Abstract: The compositions based on copolymers of vinylidene fluoride and of ethylenically unsaturated fluorine-containing comonomers, containing at least 75% by weight of vinylidene fluoride include polyvinyl chloride and an effective quantity of a methacrylic polymer (producing compatibility). These compositions exhibit in particular improved dielectric properties, which makes them particularly advantageous for sheathing electrical cables.

Abstract: A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.

Abstract: A composition comprises (A) a syndiotactic styrene-based resin and (C) rubber polymer particles such as graft copolymers, butadiene or isoprene block copolymers optionally hydrogenated and/or modified with maleic anhydride, and other rubbers, and, optionally, (B) a thermoplastic resin such as a polycarbonate, and/or (D) a filler such as glass fibers.

Abstract: Plastisol adhesion promoters of amidoamines, imidoamines, and esteramines are prepared from copolymers of monounsaturated carboxylic acids, or their derivatives, ethylenically unsaturated compounds, in particular .alpha.-olefins, and polyamines.

Abstract: In a resin blend consisting essentially of (A) 90-10% by weight of an ionomer resin and (B) 10-90% by weight of a copolymer of ethylene and an .alpha.-olefin of at least 4 carbon atoms having a specific gravity of 0.86-0.92 and a dispersity (Mw/Mn) of up to 2.5, (C) a polyolefin having a polar group is blended in an amount of 0.5-20 parts by weight per 100 parts by weight of (A)+(B), yielding a cover stock for golf balls. Golf balls with a cover formed of this cover stock are improved in durability, impact resistance, flight performance, hitting feel and controllability.

Abstract: A composition of matter useful for strippable shields for electric power cables comprises:a base polymer which is a copolymer of ethylene with a mono-unsaturated ester;conductive carbon black in an amount to give the composition an electrical resistivity below 500 .OMEGA.m; andas adhesion-controlling additive, a copolymer of ethylene with a mono-unsaturated ester containing from 0.5 to 2% by weight of side-chains each of which comprises an inflexible ring structure bonded to a backbone carbon atom of the copolymer with at most five atoms interposed between them.The compositions have the advantage of being less rubbery than current strippable-screen compositions and can be made successfully with copolymers of lower ester content.

Abstract: One-component hot-curing structural adhesives based on liquid rubbers, which may optionally contain functional groups, solid rubbers, thermoplastic polymer powders and sulfur and also vulcanization accelerators are suitable for bonding metal parts. Tensile shear strengths of more than 15 MPa and high breaking elongations of more than 15% can be obtained. These adhesives are substantially free from low molecular weight epoxy resins and are particularly suitable for use in white-shell assembly in the car industry.

Abstract: Polymer mixtures are disclosed which comprise at least one homogeneously branched ethylene polymer (A) and at least one ethylene polymer (B) having a crystallinity which is at least 7% greater than the crystallinity of polymer (A) with certain provisos. A process for making a molded article using the disclosed polymer mixtures is disclosed as well as films, film layers, coatings and molded articles formed from those mixtures. These mixtures have several advantages over polymer compositions of the prior art, including improved properties at elevated temperatures such as improved softening point under load, improved hardness, improved toughness, improved 100% modulus of elasticity, improved compression set, improved ability to prevent oil bleed out at lower temperatures when the mixture contains oil and reduced injection molding cycle time. The mixtures retain their performance advantages even when substantial amounts of additives such as oil and filler are incorporated into the mixture.

Abstract: An interpenetrating polymer network (IPN) or semi-interpenetrating polymer network (semi-IPN) comprises a first phase which is continuous and comprises a flexible polymer and a second phase which is a fluorescent or nonfluorescent durable dispersed or continuous phase and comprises a dye and a polymer, wherein the polymer enhances durability of the dye. Such networks are particularly useful in fluorescent traffic signs or safety devices or in pavement marking tape or paint.

Abstract: A curable topcoat composition and apparatus useful for preparing stable data carrying devices, such as multi-layered laminates, and methods for preparing and using the composition. The composition includes a polymerizable composition and a polymeric binder. The polymerizable composition includes hard and flexible polymerizable subunits in a ratio that optimizes flexibility while retaining good adhesion and plasticizer resistance. In a preferred embodiment, a polymerization initiator is also included in the composition. Optionally, a chain transfer agent may also be added to the composition. The composition is substantially plasticizer free. The methods of using the composition include incorporating the composition into a topcoat film useful for storing the topcoat composition prior to use in preparing data carrying devices, such as cards.

Abstract: The invention is a thermofusible adhesive composition comprising:a at least one essentially amorphous poly(alpha-olefin),b at least one copolymer of ethylene and an alkyl (meth)acrylate, the cloud point being below 170.degree. C.

Abstract: A pulverulent adhesive composition which comprises (a) at least one polymer selected from the group consisting of vinyl ester polymers, (meth)acrylate polymers and styrene(meth)acrylate polymers, (b) at least one tackifying resin (tackifier) and, optionally, (c) one or more protective colloids, and, optionally, (d) one or more anticaking agents. The present composition is suitable for use in formulations used for the adhesive bonding of porous and/or semiporous substrates.

Abstract: 1,2-Disulfones are particularly suitable as thermally and photochemically activatable latent acid catalysts for binder systems which contain at least one acid-curable component.

Abstract: A rubber composition suitable for use in grips of articles such as golf clubs, tennis rackets, bicycles and tools, comprising (1) a rubber component containing an ethylene-propylene-diene rubber (EPDM), and (2) 5 to 100 parts by weight of a polyisobutylene having a viscosity average molecular weight of 6,000 to 50,000, which provides grips having good feeling of touch, good non-slipping properties in both fine and rainy weather, and giving a small feeling of impact to mis-shot of golf balls as compared with conventional grips.

Abstract: Polymer systems having reversibly temperature-dependent radiation transmission which are crosslinked with radiation induction, a process for their production, and their use for reversibly temperature-dependent control of the radiation transmission of glazing systems and solar-energy devices.

Abstract: The invention provides a water-based adhesive composition comprising a blend of adhesive polymers in an aqueous system, characterized in that the blend of adhesive polymers is: 20-60% by weight of an acrylic polymer having a polarity balance expressed as water absorption according to DIN 53495 of 3 to 20%; and correspondingly 40-80% by weight of a compatible tackifying resin having a degree of hydrophobicity measured as the contact angle between a dried film of the resin and a drop of distilled water of not less than 60.degree.; the percentages being based on the total of acrylic polymer plus tackifying resin expressed as dry solids. The composition shows good bond retention when wet and can be used for bonding polar substrates such as cellulose and non-polar substrates such as polyolefin. When used to bond a water absorbing substrate such as cellulose, the adhesive should have a viscosity of 200 mPas or less.