Abstract: It is disclosed a polyolefin blend having an exhibiting improved processability and mechanical properties comprising of a major amount of a high molecular weight or low melt flow polyolefin, and minor amounts of a high melt flow polyolefin and an ordinary melt flow polyolefin copolymer. The improvement in processability, optical, and mechanical properties is synergistic, and is particularly evident by the improvement in output rate and dart drop impact strength.

Abstract: The present invention provides a curable resin composition which provides cured film having not only excellent acid resistance but also good weather resistance and good mar resistance. The curable resin composition comprises (a) a hydroxyl and carboxyl group containing polymer, (b) a carboxyl and carboxylate group containing polymer, and (c) a hydroxyl and epoxy group containing polymer.

Abstract: The present invention provides a thermosetting resin composition which provides cured film having not only excellent acid resistance but also good weather resistance, good mar resistance and high water repellency. The thermosetting resin composition comprises (a) a fluorinated polymer having a hydroxyl group and/or an acid group, (b) a polymer having a carboxyl group and a carboxylic ester, and (c) a polymer having a hydroxyl group and an epoxy group.

Abstract: A crosslinkable polyethylene-based composition useful for rotational molding and, when cured, beneficially characterized by exceptional percent elongation after long term exposure to degradation conditions, is provided. The composition advantageously includes a polyalkylene terephthalate as a polymeric additive.

Abstract: Partially crosslinked polyolefin blends containa) a polymer of from 25 to 97% by weight of a propylene polymer (I), which contains from 0 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alka-1-enes, and of from 3 to 75% by weight of a further propylene polymer (II) which contains from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alka-1-enes,b) a random ethylene copolymer containing from 5 to 20% by weight of polymerized C.sub.3 -C.sub.10 -alk-1-enes and having a density of from 0.89 to 0.925 g/cm.sup.3 at room temperature,c) a rubber-like material having a Shore A hardness of from 30 to 90 andd) a bismaleimido compound of the following formula (I) ##STR1## where R is C.sub.1 -C.sub.20 -alkyl which may be interrupted by one or more oxygen atoms,C.sub.5 -C.sub.7 -cycloalkyl or C.sub.6 -C.sub.15 -aryl, each of which in turn may be substituted by one or more C.sub.1 -C.sub.10 -alkyl and/or C.sub.1 -C.sub.6 -alkoxy and/or C.sub.1 -C.sub.

Abstract: A rubber composition including (i) a partially hydrogenated unsaturated nitrile-conjugated diene copolymer having an iodine value not larger than 120, (ii) an ethylene-propylene copolymer and (iii) a material selected from an ethylene-vinyl acetate copolymer, an acrylic rubber and a halogenated butyl rubber. The rubber composition prodides a vulcanized rubber having an improved constant-elongation fatigue performance, as well as balanced thermal resistance, oil resistance and other properties.

Abstract: Disclosed is a process for preparing cycloolefin random copolymer pellets, comprising adding an organic polar solvent to a solution of a copolymer obtained by copolymerizing ethylene and a specific cycloolefin and if desired an .alpha.-olefin other than ethylene, in an amount exceeding such an amount that the liquid mixture exhibits the cloud point, separating the copolymer solution utilizing phase separation phenomenon into a concentrated phase containing the cycloolefin random copolymer in a high concentration and a dilute phase containing said copolymer in a low concentration, feeding the obtained concentrated phase to an extruder where the solvents are removed and the copolymer is melted during extrusion processing, followed by pelletizing the copolymer.

Abstract: A sealing composition for a container closure comprises a polymeric matrix material and its oxygen permeability is reduced by incorporating ethylene vinyl alcohol polymer into the composition. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure.

Abstract: Disclosed are polyolefin compositions comprising (A) a propylene homopolymer or a crystalline copolymer of propylene and ethylene or a C.sub.4-8 alpha-olefin, (B) an olefin polymer composition, and optionally either, (C) a propylene polymer composition or (D) an olefin polymer rubber.

Abstract: The present invention provides a golf ball having excellent hit feeling and control property as well as satisfactory flying performance and cut resistance, which comprises a core and a cover for covering the core. The cover is prepared from a heated mixture of the following three components:(A) an ionomer resin;(B) a polymer containing at least maleic anhydride as one constituent component; and(C) a metal salt selected from the group consisting of metal hydroxides, metal carbonates or metal acetates.

Abstract: Disclosed are heat sealable compositions comprising: (a) from about 30 to about 70 weight percent a low melting polymer comprising an ethylene based copolymer having a density of from about 0.88 g/cm.sup.3 to about 0.915 g/cm.sup.3, a melt index of from about 1.5 dg/min to about 7.5 dg/min, a molecular weight distribution no greater than about 3.5, and a composition breadth index greater than about 70 percent; and, (b) from about 70 to about 30 weight percent of a propylene based polymer having from about 88 mole percent to about 100 mole percent propylene and from about 12 mole percent to about 0 mole percent of an alpha-olefin other than propylene. Further disclosed are films and articles made thereof.

Abstract: For producing 100 parts by weight of a polymer blend 0 to 95 parts by weight of a finely divided polyolefin, 0 to 95 parts by weight of finely divided cycloolefin polymer and 0.1 to 99 parts by weight of a blockpolymer (which consists of monomeric units derived from norbornen and monomeric units derived from aliphatic monocycloolefins C.sub.n H.sub.2n and/or aliphatic 1-olefin, such as ethylene or propylene, are mixed and the mixture is processed under heat and shear forces. The block copolymer acts as phase mediator and contains in different blocks different proportions of the monomer units used.

Abstract: A flame retarded composition for wire insulations that includes a polyethylene blend having a high density polyethylene, in an amount from about 50 to about 95 parts per hundred, and a very low density polyethylene, in an amount from about 5 to about 50 parts per hundred, a primary brominated flame retardant, in an amount from about 30 to about 40 parts per hundred, a secondary chlorinated flame retardant, in an amount from about 5 to about 15 parts per hundred, a first flame retarding synergist, in an amount from about 12 to 20 parts per hundred, a second flame retarding synergist, in an amount from about 7 to about 11 parts per hundred, a first hindered phenolic stabilizer, in an amount from about 0.05 to about 0.30 parts per hundred, and a second hundred phenolic stabilizer, in an amount from about 0 to about 0.30 parts per hundred, a polypropylene polymer in an amount from 2 to 10 parts per hundred.

Abstract: Hot-melt adhesives based upon a mixture composed of poly(vinylmethylether), greater than about 10 weight percent of a thermoplastic resin and, optionally a tackifier resin and/or extender, are found to be superior for the binding of polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers to themselves and to other substrates. In particular, the hot-melt adhesives are useful for bonding polyethylene-backed and latex-backed carpet to polyethylene, polypropylene, or ethylene-propylene copolymer.

Abstract: A method of producing a polyolefin blend, such as a polypropylene-polybutylene blend comprising preferentially cracking the polybutylene component with the aid of a cracking agent at a temperature sufficient to induce preferential cracking. The blend produced by the method of this invention has improved optical properties, shrinkage, and processability.

Abstract: A composition is provided, comprising (1) a narrow molecular weight distribution component having an Mw/Mn in the range of about 1.0 to about 2.0 and a weight average molecular weight in the range of about 500 to about 7,500 comprising an ethylene homopolymer; and (2) a broad molecular weight distribution component having an Mw/Mn greater than or equal to about 3.0 and a weight average molecular weight in the range of about 100,000 to about 750,000 comprising and ethylene copolymer; wherein said narrow molecular weight distribution component is present in the polymer composition in an amount of at least about 10 weight percent as based on the total weight of the polymer composition. In another embodiment, the narrow molecular weight distribution component further comprises an ethylene/hexene copolymer.

Abstract: There is provided a composition comprising a higher a-olefin copolymer (1) obtained by copolymerization in the presence of a specific olefin polymerization catalyst of a specific higher .alpha.-olefin, a specific .alpha., .omega.-diene of the formula (I) and a specific non-conjugated diene of the formula (II), and a rubber (2) selected from the group consisting of a diene rubber, an ethylene/a-olefin copolymer, a nitrile rubber and a hydrogenated nitrile rubber. The composition is excellent in workability strength characteristics, weatherability, ozone resistance and dynamic fatigue resistance, as well as excellent in adhesive properties to fiber and in vibration-insulating properties and damping properties.

Abstract: Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.

Abstract: Molding compounds of acrylate polymers, optionally graft rubbers and/or optionally resin-like vinyl polymers containing 0.05 to 5% by weight tetrafluoroethylene polymers.

Abstract: A blended polymer composition that comprises: (a) from about 10 weight percent to about 40 weight percent of an ethylene-vinyl acetate copolymer resin; and (b) from about 60 weight percent to about 90 weight percent of a linear ethylene copolymer resin; wherein said weight percents are based on the weight of said polymer composition.A blended polymer composition that comprises: (a) from about 10 weight percent to about 40 weight percent of an ethylene-vinyl acetate copolymer resin; (b) from about 5 weight percent to about 25 weight percent of a branched ethylene homopolymer resin; (c) from about 50 weight percent to about 85 weight percent of a linear ethylene copolymer resin; wherein said weight percents are based on the weight of said polymer composition.