Abstract: This invention relates to a ternary blend of 20 to 50 wt. % of random propylene copolymer of approximately 2% ethylene, 10 to 40 wt. % ethylene/propylene rubber, and 20 to 50 wt. % high density polyethylene for use as a molded article.

Abstract: A chlorosulfonated or chlorinated polyethylene dispersed in a polyolefin, vulcanized and then the vulcanizate dispersed into a thermoplastic chlorosulfonated or chlorinated polyethylene forming a partially crosslinked thermoplastic chlorosulfonated or chlorinated polyethylene vulcanizate having good interply adhesion, hot weld strength, commercial processability, and crack resistance.

Abstract: Disclosed are films and laminates which are prepared by known filming or calendering processes using heterophasic propylene polymer compositions comprising:A) 10-60 parts by weight of homopolymer polypropylene having an isotactic index greater than 90, or crystalline copolymer of propylene with ethylene and/or other alphaolefins containing more than 85% by weight of propylene and having an isotactic index greater than 85;B) 10-40 parts by weight of a semi-crystalline essentially linear copolymer containing prevailingly ethylene, which is insoluble in xylene at room temperature;C) 30-60 parts by weight of an amorphous ethylene-propylene copolymer, soluble in xylene at room temperature and containing 40-70% by weight of ethylene;said propylene polymer compositions having a ratio between the intrinsic viscosities, in tetrahydronaphthalene at 135.degree. C., of the portion soluble in xylene and of the portion insoluble in xylene at room temperature of from 0.8 to 1.2.

Abstract: Elastoplastic polyolefin compositions endowed with high flexibility, comprising:A) 10-50 parts by weight of a homopolymer of propylene with isotactic index greater than 80, or a copolymer of propylene with ethylene, another .alpha.-olefin, or combinations thereof, which copolymer contains over 85% by weight of propylene;B) 5-20 parts by weight of a copolymer fraction containing ethylene, insoluble in xylene at ambient temperature;C) 40-80 parts by weight of a copolymer fraction of ethylene and propylene or another .alpha.-olefin, or combinations thereof, and, optionally, minor portions of a diene, said fraction containing less than 40% by weight of ethylene, being soluble in xylene at ambient temperature, and having an intrinsic viscosity from 1.5 to 4 dl/g; the percent by weight of the sum of the (B) and (C) fractions with respect to the total polyolefin composition being of from 50% to 90% and the (B)/(C) weight ratio being lower than 0.4.

Abstract: Resins having a softening point from 10.degree. C. to 120.degree. C. especially 10.degree. C. to 80.degree. C. being a copolymer of a feed which is predominantly C.sub.5 olefines and diolefines and 10 to 60 wt. % of one or more monovinyl aromatic compounds are used as a tackifier for acrylic polymers or copolymers particularly in aqueous based pressure sensitive adhesives.

Abstract: This invention relates to a compatibilized rubber composition and a process for compatibilizing dissimilar rubber blends comprising blending an ethylene/acrylate/acrylic acid terpolymer with 2 or more different rubbers, selected from the group including, but not limited to, EPR, EPDM, CR, NBR, SBR and NR.

Abstract: A heat seal material having a plurality of resin surfaces which are positioned face to face and can be heat-fused together, at least one of the resin surfaces being formed of a resin composition comprising(A) 30 to 85% by weight of low-density polyethylene having a density of 0.91 to 0.94 g/cm.sup.3 and a crystallinity of more than 40%,(B) 5 to 40% by weight of polypropylene, and(C) 10 to 40% by weight of a low-crystalline or substantially amorphous ethylene/alpha-olefin copolymer.

Abstract: Adhesives suitable for preparing laminates of polyvinyl chloride or polyvinyl chloride copolymers with wood or metal are prepared from a three component polymer mixture of polyvinyl chloride or its copolymers itself, a direct ethylene copolymer and another direct ethylene copolymer containing units derived from a monomer containing glycidyl units. The adhesive is especially useful for preparing PVC/wood laminates which are subject to outdoor weathering.

Abstract: A composition comprising (a) a vinylidene fluoride-hexafluoropropylene thermoplastic copolymer and (b) a fluoroelastomer, such as vinylidene fluoride-hexafluoropropylene elastomeric copolymer, at least one of (a) and (b) being cross-linked, exhibits excellent physical properties. The composition is particularly useful in the form of a heat recoverable article or as wire and cable insulation.

Abstract: A graft polymer wherein an iodine-containing fluororubber has been grafted on an ethylene-.alpha.-olefin copolymer can be obtained by mixing 30 parts by weight of an iodine-containing fluororubber (a vinylidene fluoride-hexafluoropropylene copolymer containing iodine) and 70 parts by weight of an ethylene-propylene copolymer rubber at 180.degree. C. for 30 minutes while applying shear deformation using a Brabender mixer.

Abstract: Reversible polymer gels comprising:(a) 55-98% by weight based on the total polymers contained in the gel, of an elastomeric copolymer of vinylidene fluoride comprising, in moles, 55-85% of vinylidene fluoride, 15-45% of hexafluoropropene and 0.30% of tetrafluoroethylene;(b) 2-45% based on the total polymers contained in the gel, of a non-elastomeric polymer selected from non-elastomeric VDF. based polymers, or polyvinylfluoride, or acrylic resins, for example polyalkylmethacrylates and copolymers of alkylmethacrylates with alkylacrylates, having T.sub.g >50.degree. C.

Abstract: The present invention provides a polypropylene film having high transparency and heat-sealability and superior in the balance between stiffness (tensile modulus) and impact resistance which polypropylene film comprises a) 80-99.5% by weight of a propylene polymer and b) 0.5-20% by weight of an ethylene/.alpha.-olefin copolymer prepared by the copolymerization of ethylene and an .alpha.-olefin having a 3 to 12 carbon atoms, said ethylene/.alpha.-olefin copolymer satisfying the following conditions (i) to (iii):(i) a density of 0.860 to 0.910 g/cm.sup.3 ;(ii) a maximum peak temperature of not lower than 100.degree. C. as measured by differential scanning calorimetry (DSC); and(iii) an insolubles content in boiling n-hexane of not lower than 10% by weight.

Abstract: Compatibilized blends of polypropylene, linear low density polyethylene and a low molecular weight plastomer are disclosed. The blend preferably contains at least about 50 percent by weight of crystalline polypropylene, from about 10 to about 50 percent by weight of LLDPE dispersed in a matrix of the polypropylene, and a compatibilizing amount of an ethylene/alpha-olefin plastomer having a weight average molecular weight between about 5,000 to about 50,000, a density of less than about 0.90 g/cm.sup.3, and a melt index of at least about 50 dg/min. The blend is useful in the formation of melt spun and melt blown fibers. Also disclosed are spun bonded-melt blown-spun bonded fabrics made from the blends.

Abstract: A process for producing polypropylene, which comprises preliminarily polymerizing 3-methylbutene-1 in the presence of a catalyst system formed from[A] a solid titanium catalyst component containing magnesium, titanium, halogen and polycarboxylic acid esters as essential components,[B] an organoaluminum compound, and[C] an organosilicon compound represented by the general formula R.sub.n Si(OR').sub.4-n wherein R and R' represent a hydrocarbon group, and 0<n<4, the amount of the 3-methylbutene-1 preliminarily polymerized being 0.1 to 100 g per gram of the solid titanium catalyst, and thereafter, polymerizing propylene or copolymerizing propylene and an alpha-olefin in the presence of the catalyst used in the preliminary polymerization to such an extent that the amount of the monomer or monomers polymerized is from 1,000 to 100,000 times the amount of the 3-methylbutene-1 preliminarily polymerized.

Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## wherein m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.

Abstract: The ethylene/pentene-1 copolymer composition of the present invention comprises an ethylene/pentene-1 copolymer satisfying specific requests, and a high-pressure polyethylene, polyethylene having a density of greater than 0.935 or low crystalline .alpha.-olefin random copolymer. This composition is excellent in transparency, moldability, heat sealing property at low temperature and tear property, and are particularly useful for packaging film material.

Abstract: A polyethylene composition which has a wide molecular weight distribution and excellent balance among melt elasticity, flow characteristics and mechanical properties, and which is suitable for use in producing large-scaled hollow plastics articles. The composition comprises a higher molecular weight ethylene polymer or copolymer and a lower molecular weight ethylene polymer or copolymer which is specified in view of the content of o-dichlorobenzene and the ratio of the area under the elution temperature-eluate volume curve between 25.degree.to 90.degree. C. to the area under said curve of 90.degree. C. and above in temperature rising elution fractionation.

Abstract: A cross-linkable polyethylene-based composition useful for rotational molding and, when cured, characterized by exceptional percent elongation after long term exposure to degradation conditions, is provided. The cured composition has a high degree of crosslinking which may be a more random type of crosslinking.

Abstract: The ethylene/pentene-1 copolymer composition comprises an ethylene/pentene-1 copolymer satisfying specific request and an ethylene/vinyl acetate copolymer. This composition has excellent balance between impact resistance and tear properties, excellent transparency and good hot tack properties, and are particularly useful for packing films.

Abstract: The invention relates to novel blend compositions comprising a linear low density copolymer of ethylene and a minor amount of an olefin containing 4 to 10 carbon atoms (LLDPE), and to films of improved properties formed from such compositions. The invention includes a process of forming blown films from such compositions which is accomplished with improved processability and at least substantial retention of the desirable properties of the linear low density polyethylene. The invention also includes a waste bag formed from such blown film products.