Abstract: The present invention concerns the polyolefin resin compositions wherein acrylic oligomers, polydiene and chlorinated polyolefins which contain 10-60 weight % chlorine are graft copolymerized. Films of the polyolefin resin compositions have good adhesive properties, moisture-resistant properties and appearance.

Abstract: Modified chlorinated polyolefin compositions containing, as a main ingredient, a modified chlorinated polyolefin which is obtained by reacting together, in an organic solution, a chlorinated polyolefin, maleic acid anhydride, a (meth)acryl-modified hydrogenated polybutadiene and an organic peroxide. The modified chlorinated polyolefin compositions may be used in coating compositions, adhesives for polyolefines and as printing ink binders.

Abstract: Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.

Abstract: An electron-beam cured sheet-type foam comprises: a polypropylene type resin (A) of 100 parts by weight of which main component is polypropylene; a copolymer resin (B) of 5 to 40 parts by weight which is made of ethylene and at least one selected from the group consisting of acrylic acid, ethylacrylate maleic acid anhydride and vinylacetate; and a copolymer resin (C) made of ethylene and an .alpha.-olefin of 4 to 8 carbon atoms, having a melting point of 117.degree. C. to 123.degree. C. and a density of 0.890 g/cm.sup.3 to 0.910 g/cm.sup.3. This foam contains 20 to 60 percent in gel content and has an expansion ratio of 5 to 40.

Abstract: Rubber mixtures for tire treads are found, which show an improved wet skid resistance coupled with balanced abrasion and rolling resistance properties. This is achieved by rubber blend mixtures which contain 3,4-polyisoprene having a 3,4-content from 55 to 75%, a glass transition temperature from 0.degree. to -25.degree. C., a number average molecular weight of 200,000 and higher and an inhomogeneity U of less than 1.8. Motor vehicle tires can be prepared in an advantageous manner with these rubber mixtures.

Abstract: Butadiene polymer rubber compositions containing a polymeric activator have particularly beneficial characteristics. The activator is an interpolymer of 2-vinylpyridine monomer and 1,3-butadiene monomer, optionally with styrene, which interpolymer contains from 20% to 65% by weight of vinylpyridine units, and is mostly insoluble in boiling tetrahydrofuran.

Abstract: A dynamically vulcanized composition comprising a polyolefin resin and an elastomer is provided in which a major portion of fillers or specified additives are present in the polyolefin resin. A process for producing the dynamically vulcanized composition is also provided including the addition of the fillers and/or specified additives after the dynamic vulcanization step. The compositions have improved stiffness to impact balance.

Abstract: One-piece and multi-layered golf balls are improved in flying performance by forming the one-piece ball entirely or multi-layered golf ball core from a rubber composition comprising a base rubber and a co-crosslinking agent in the form of a premix of an unsaturated fatty acid metal salt and a liquid polymer.

Abstract: A shrink film comprising at least one polyolefinic layer comprising polypropylene and a resin admixture is disclosed. The film processes a shrinkability of more than 20%, measured at 90.degree. C., in the transverse direction and of less than 8%, also measured at 90.degree. C., in the longitudinal direction. The film is manufactured by coextrusion followed by stretching in the longitudinal and transverse directions, whereby stretching in the longitudinal direction is performed such that the birefringence value .DELTA.n of the longitudinally oriented film does not exceed the range from 10.times.10.sup.-3 to 13.times.10.sup.-3.

Abstract: A vinyl chloride polymer formulation having a chlorinated olefin polymer as an impact modifier, and an oxidized high density polyethylene homopolymer having an acid number of from about 5 to about 40 as a fusion promoter can be converted into shaped articles. The invention includes an improved olefin polymer impact modifier composition for use with vinyl chloride polymer formulations, the composition comprising a combination of said chlorinated olefin polymer and said oxidized high density polyethylene homopolymer. The vinyl chloride polymer formulation of the present invention is useful, for example, as a feedstock for the preparation of shaped articles such as vinyl siding and vinyl window frames.

Abstract: Thermoplastic compositions of matter useful as gasketing materials as well as flexible boots and seals which are soft, have low compression set and high tensile. The compositions comprise a polyolefin resin and at least two different rubbers, one of which is vulcanized to a fully cured state by a cure systems which leaves the other rubber(s) unvulcanized. The preferred embodiment comprises a blend of polypropylene and ethylene vinylacetate as the polyolefin resin component, EPDM as the uncured rubber component and a ZnO cured halogenated butyl rubber. In another embodiment of the invention, the resin is excluded and the uncured rubber is a high crystallinity EPDM.

Abstract: A polymer latex for making gloves having excellent donning and doffing characteristics comprises a carboxylated open chain aliphatic diene/acrylonitrile/(meth)acrylate terpolymer. A process for making latex gloves using the polymer latex prepared in accordance with the invention is also disclosed.

Abstract: The present invention provides a stretched article having a pearly gloss and a total light transmission of 40% or less which is obtained by molding a composition comprising 100 parts by weight of a crystalline polypropylene, 0.5 to 30 parts by weight of a high-density polyethylene having a density of 0.94 or more and 5 to 50 parts by weight of a cyclopentadiene petroleum resin having a softening point (according to the ring and ball metyhod) of 160.degree. C. or more, and then stretching the resulting molded article; and a process for producing a stretched article having a pearly gloss which comprises the steps of melt-extruding the above-mentioned composition at on above the softening point of the petroleum resin, cooling the extruded composition to form an unstretched raw fabric, and then stretching the raw fabric 200% or more in at least one direction at a temperature which is lower than the crystalline melting point of the polypropylene and is equal to or below the softening point of the petroleum resin.

Abstract: A two-component type adhesive agent, comprising a polyvalentepoxy compound and an aqueous liquid of an amino group-containing polymer obtained by modifying a carboxyl group-containing polymer with an alkylene imine and possessed of an activated hydrogen atom.

Abstract: The present invention relates to an opacified molded product composed mainly of a polypropylene resin. More particularly, according to the present invention, there are provided an opacified stretched molded product having a total light transmittance of 50% or less and a density of 0.89 or less comprising a composition comprising 100 parts by weight of polypropylene and 3 to 40 parts by weight of a cyclopentadiene petroleum resin and/or a hydrogenated cyclopentadiene petroleum resin, the molded product being a product stretched in at least one direction. Also provided are a resin composition comprising 100 parts by weight of a crystalline polypropylene and 30 to 40 parts by weight of a copolymer resin comprising a copolymer of a cyclopentadiene compound and an aromatic hydrocarbon or its hydrogenated product, a stretched molded product thereof.

Abstract: The disclosed dulled stretched molding of at most 30% in gloss value, which is useful as a general-purpose packaging material, printing paper, tracing paper, etc., is produced from a composition comprising 100 parts by weight of a propylene-ethylene lock copolymer and 3 to 40 parts by weight of a cyclopentadiene type petroleum resin having a ring and ball softening point of at least 160.degree. C. through melt extrusion thereof and stretching of the resulting flat extrudate.There also is disclosed a heat-shrinkable foamed molding of at most 0.85 in density and at least 10% in heat shrinkability at 100.degree. C., which is useful as a packaging material, a tying material, a label material, etc. This heat-shrinkable foamed molding is produced from a composition comprising a crystalline propylene-.alpha.-olefin copolymer having a crystal melting point of at most 150.degree. C. and 5 to 40 wt.

Abstract: A substantially gel free C.sub.4 to C.sub.7 isoolefin homopolymer rubber, butyl copolymer rubber, halogenated butyl rubber (e.g., chlorinated or brominated), or mixtures thereof, comprising a molecular weight distribution such that the ratio of the moments of said molecular weight distribution, Mz/Mw, is equal to or exceeds 2.0, and that portion of said molecular weight distribution which is equal to and greater than 4 times the peak molecular weight, Mp, comprises greater than 8 percent of the total polymer species, and Mp is greater than about 250,000 and wherein said polymer species of molecular weight less than Mp are substantially branch free. Various means are disclosed for effecting the molecular weight distribution including blending of homopolymers and/or copolymers of appropriate molecular weight and molecular weight distribution and direct polymerization using a functional reagent to introduce branching.

Abstract: Butadiene polymer rubber compositions containing a polymeric activator have particularly beneficial characteristics. The activator is an interpolymer of a vinylpyridine monomer and a diene hydrocarbon monomer which interpolymer contains from 20% to 65% by weight of vinylpyridine units. Composite articles made from these rubber compositions together with contiguous portions of a dissimilar rubber compound show greater strength and adhesion as a result of the presence of a activator in the butadiene polymer rubber composition.

Abstract: A process for the chlorination of a polyolefin is provided in accordance with the present invention. This process comprises mixing an anti-coagulant with a finely divided polyolefin, and then subjecting the resulting mixture to a multi-step chlorination in the presence of a free radical generation accelerant.The chlorinated polyolefin so produced is suitable to use as a raw material in the production of many kinds of adhesives.

Abstract: The present invention relates to an elastomeric composition suitable for tire treads comprising 1) 10-90% wt of a copolymr of a mono-aromatic vinyl compound and a conjugated diene having a vinyl content of .gtoreq.50% wt and a Tg >-35 degree C, and 2) 90-10% wt of a homopolymer of a conjugated diene or a copolymer of a mono-aromatic vinyl compound and a conjugated diene, containing <25% wt of mono-aromatic vinyl compound and having a vinyl content <25% wt and a Tg <-55 degree C, both polymers having a differential content of mono-aromatic vinyl compound which is <5 percentage points.

Abstract: The present invention relates to elastomeric reinforced thermoplastic blend compositions which exhibit improved mechanical properties, wherein the thermoplastic blend compositions comprise a blend of a metal neutralized copolymer of ethylene and methacrylate with about 1 to about 40 weight percent of a metal neutralized EPDM terpolymer.

Abstract: Novel poly(keto-esters) having carbonyl and oxycarbonyl units randomly combined with linking units derived from olefinic monomers to form an essentially straight-chain polymer backbone are provided. The poly(keto-esters) are produced by converting a portion of the carbonyl functionality of a polyketone to oxycarbonyl groups. The conversion is achieved by reacting the polyketone with an organic peroxyacid in an inert liquid medium at a temperature from -20.degree. C. to 150.degree. C.

Abstract: The two-solution acrylic adhesive composition of this invention is composed of a solution A which has as its necessary ingredients (1) a chlorosulfonated polyethylene, (2) a (meth)acrylate monomer, and (3) an organic peroxide, and a solution B which has as its necessary ingredients (4) a butadiene-acrylonitrile copolymer elastomer (NBR), (5) a (meth)acrylate monomer, and (6) an aminealdehyde condensate.

Abstract: A dynamically vulcanized thermoplastic composition is provided which comprises a polymer blend of a polyolefin resin, a halogenated elastomeric copolymer, such as a halogenated butyl rubber, or a halogenated copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene, and a halogenated polyethylene. The composition has improved flame retarding properties. Additional flame retarding additives may be incorporated in the composition. The dynamically vulcanized thermoplastic composition is suitable for use in roofing sheets.

Abstract: A dynamically vulcanized composition is provided which comprises a polyolefin resin, an elastomer, and an ethylene copolymer resin such as a copolymer of ethylene and vinyl acetate or an alkyl acrylate. A process for producing the dynamically vulcanized composition is also provided, which process includes the addition of the ethylene copolymer resin after the dynamic vulcanization step. The resulting composition comprises the ethylene copolymer resin predominantly in the polyolefin resin phase. The compositions have improved surface appearance and softness.

Abstract: The present invention relates to an elastomeric composition suitable for tire treads comprising (1) 10-90% wt of a copolymer of a mono-aromatic vinyl compound and having a vinyl content of <50% wt and a Tg<-35 degree C., and (2) 90-10% wt of a hompolymer of a conjugated diene or a copolymer of a mono-aromatic vinyl compound and a conjugated diene, containing <25% wt of mono-aromatic vinyl compound and having a vinyl content <25% wt and a Tg<-55 degree C., both polymer having a differential content of mono-aromatic vinyl compound which is <5 percentage points.

Abstract: Sulfur curable rubber compositions have improved properties such as cure rate and scorch delay when prepared by using an organic accelerator and a co-activator which is an interpolymer made from vinylpyridine and one or more diene monomers. The amount of the vinylpyridine units in the co-activator is generally from about 10 percent to about 75 percent by weight. The rubber compositions can contain either carbon black or silica.

Abstract: Thermoplastic polyolefin (TPO) compositions which have superior long-term heat aging characteristics are prepared by blending a crystalline thermoplastic resin with a halobutyl rubber under conditions of dynamic vulcanization and in the presence of a maleimide curative.

Abstract: A dynamically vulcanized thermoplastic composition is provided which comprises a polymer blend of a thermoplastic olefinic resin, and an elastomeric halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a paraalkylstyrene. A process for preparing the dynamically vulcanized composition is also provided.

Abstract: Polymer blend composition having improved processibility and comprising:(a) a major portion of a difficultly melt-processible polymer, and(b) a minor portion of:(1) at least an effective amount, to improve processibility, of a fluorocarbon copolymer which at the melt-processing temperature of (a) is either in a melted form if crystalline, or is above its glass transition temperature if amorphous, and(2) at least an effective amount, to improve processibility, of at least one tetrafluoroethylene homopolymer or copolymer of tetrafluoroethylene and at least one monomer copolymerizable therewith, wherein the mole ratio of fluorine to hydrogen is at least 1:1, and which is solid at the melt-processing temperature of (a);masterbatches comprised of the processing aid; and processes utilizing the processing aid.

Abstract: Disclosed is a curable rubber composition comprising (a) 100 parts by weight of a rubber comprising 90 to 60% by weight of any ethylenically unsaturated nitrile/conjugated diene type highly saturated rubber and 10 to 40% by weight of an ethylene/propylene copolymer rubber, (b) 10 to 100 parts by weight of a zinc salt of methacrylic acid, and (c) 0.2 to 10 parts by weight of an organic peroxide. The curable rubber composition provides a cured product having an excellent strength, and ozone resistance.

Abstract: Butadiene polymer rubber compositions containing a polymeric activator have particularly beneficial characteristics. The activator is an interpolymer of a vinylpyridine monomer and a diene hydrocarbon monomer which interpolymer contains from 20% to 65% by weight of vinylpyridiene units. Composite articles made from these rubber compositions together with contiguous portions of a dissimilar rubber compound show greater strength and adhesion as a result of the presence of a activator in the butadiene polymer rubber composition.

Abstract: Thermoplastic compositions are prepared by blending an ethylene-hexene and/or an ethylene-butene copolymer resin, with a rubber and dynamically vulcanizing the rubber to form a heat-shrinkable dynamically vulcanized alloy of exceptionally low hardness, and great flexibility and elasticity. The preferred rubber is halogenated butyl rubber. Uncured rubber can be included in the composition.

Abstract: Thermoplastic vulcanizates are prepared by curing, at least partially by dynamic vulcanization, blends of chlorinated polyethylene and crystalline thermoplastic polymers such as polypropylene. Inclusion of a plasticizing material or extender oil, e.g. trioctyl trimellitate, enhances softness and oil resistance of the blends. Vulcanizing materials include a basic material, normally added with the chlorinated polyethylene, and (1) a derivative of 2,5-dimercapto-1,3,4-thiadiazole or (2) a combination of 2,5-dimercapto-1,3,4-thiadizaole and an activator material such as an amine having a boiling point of 110.degree. C. or higher and a pk value less than 4.5.

Abstract: A chlorinated polyethylene dispersed in a polyolefin, vulcanized and then the vulcanizate dispersed into a thermoplastic chlorinated polyethylene forming a partially crosslinked thermoplastic chlorinated polyethylene vulcanizate having good interply adhesion, hot weld strength, processable on commercially available equipment, and cracking resistance.

Abstract: It is highly desirable to be able to cure rubbers quickly since the amount of energy required for the curing process is reduced and the number of articles that can be cured in a mold in a given time is increased. In other words, the cycle time needed to cure articles made from such a rubber is reduced and the throughput of a mold utilized in curing such a rubber is increased. Unfortunately, most attempts to accelerate the cure rate of rubber have resulted in the rubber having poor scorch safety. The present invention discloses a fast curing rubber blend having excellent scorch safety which comprises: (a) from 50 to 98 weight percent of at least one polydiene rubber, and (b) from 2 to 50 weight percent of at least one vinylpyridine copolymer comprised of repeat units which are derived from a diene monomer and vinylpyridine wherein from 1 to 75 weight percent of the repeat units in said copolymer are derived from vinylpyridine.

Abstract: Thermoplastic compositions of matter useful as gasketing materials as well as flexible boots and seals which are soft, have low compression set and high tensile. The compositions comprise a polyolefin resin and at least two different rubbers, one of which is vulcanized to a fully cured state by a cure system which leaves the other rubber(s) unvulcanized. The preferred embodiment comprises a blend of polypropylene and ethylene vinylacetate as the polyolefin resin component, EPDM as the uncured rubber component and a ZnO cured halogenated butyl rubber. In another embodiment of the invention, the resin is excluded and the uncured rubber is a high crystallinity EPDM.

Abstract: The present invention provides a rubber composition which comprises 100 parts by weight of ethylene.multidot..alpha.-olefin.multidot.non-conjugated diene copolymer rubber, 5-40 parts by weight of solid diene rubber and 4-15 parts by weight of sulfur, the butadiene content of said solid diene rubber being 50% by weight or more, the butadiene portions of said solid diene rubber having 40% or more of 1,2 bonds based on all the bonds of said portion, and the ratio of weight-average molecular weight to number-average molecular weight being 2 or less. The rubber composition is a vulcanized rubber excellent in properties such as hardness and strength.

Abstract: A compatibilized blend of at least three polymers is provided. One polymer is a vinylidene chloride interpolymer, such as a copolymer of vinylidene chloride and vinyl chloride. A second polymer is an olefin polymer, such as polyethylene. A third polymer is a compatibilizing polymer such as an ethylene/alkyl acrylate or an ethylene/alkyl methacrylate copolymer. The compatibilized blend, after melt processing, has mechanical properties which are better than those predicted by a straight line volume fraction relationship of the vinylidene chloride interpolymer and the olefin polymer.

Abstract: A high-hardness rubber composition which is obtained by vulcanizing an unvulcanized rubber composition comprisingan unvulcanized ethylene..alpha.-olefin rubber composition (A) comprising 100 parts by weight of an ethylene..alpha.-olefin copolymer rubber, 60-150 parts by weight of a reinforcing agent and 0-70 parts by weight of a softener;5-40 parts by weight of a solid diene rubber (B) based on 100 parts by weight of said ethylene..alpha.-olefin copolymer rubber; and4-15 parts by weight of sulfur (C) based on 100 parts by weight of said ethylene..alpha.-olefin copolymer rubber,wherein said unvulcanized rubber composition is obtained by adding said solid diene rubber (B) and said sulfur (C) to said unvulcanized ethylene..alpha.-olefin rubber composition (A).

Abstract: Curable flame retardant mixtures of a polyolefin (non-rubbery), a polyphenylene ether resin, an aromatic phosphate, a brominated compound or polymer, and a crosslinking agent are described. Electrically conductive articles having insulation material made of the composition and methods for preparing such articles are also disclosed.

Abstract: Plastisol molding compositions, especially those based on PVC polymers and/or copolymers, containing an acidic cation exchanger. Such compositions do not cause discoloration in use in comparison with conventional materials which lack the acidic cation exchanger.

Abstract: Polypropylene resin compositions suitable for producing polypropylene films with excellent properties are disclosed. The compositions can provide polypropylene films having very excellent transparency, excellent heat-sealability and good anti-blocking property. Such characteristics are essential requirements for packing films. The polypropylene resin compositions comprise 70 to 99 parts by weight of polypropylene and 1 to 30 parts by weight of a specific hydrogenated petroleum resin. The hydrogenated petroleum resin can easily be prepared industrially from valueless by-products of oil and petrochemical industries, such as C.sub.5 fraction and C.sub.9 fraction by-produced in naphtha steam cracking process.

Abstract: A process for incorporating carboxy and/or carboxyl derivative functionality into a hydrocarbon polymer which is substantially free of ethylenic unsaturation. The functionalization is accomplished by contacting the functionalizing agent or agents with the polymer in the presence of a free radical initiator in a blending apparatus capable of imparting high mechanical energy into the reaction medium. The blending apparatus is preferably an extruder and most preferably a non-intermeshing twin screw extruder. The amount of degradation resulting from the presence of a free radical initiator and the high mechanical shear at the elevated temperatures employed during the contacting is reduced by effecting the contacting in a suitable diluent. Similarly, the amount of polymer crosslinking and/or coupling is reduced through the use of a suitable diluent. The polymer is maintained in the molten phase during the reaction.

Abstract: Functionalized thermoplastics such as styrene-maleic anhydride copolymers or maleated polyolefins may be toughened with halogenated rubbers which are copolymers of isoprene and isobutylene provided a dialkyl or dihydroxyalkyl amino alkanol is present as a compatibilizer. The toughened thermoplastics have about a two fold increase in IZOD impact resistance.

Abstract: There is disclosed a process for enhancing the rate of cure of a sulfur vulcanizable rubber. Addition of a hydroformylated rubber to a sulfur vulcanizable rubber enhances the rate of cure and concomitantly improves the rubber/filler interaction of the vulcanized rubber.

Abstract: Thermoplastic vulcanizates are prepared by curing, at least partially by dynamic vulcanization, blends of chlorinated polyethylene and crystalline thermoplastic polymers such as polypropylene. Inclusion of a plasticizing material or extender oil, e.g. trioctyl trimellitate, enhances softness and oil resistance of the blends. Vulcanizing materials include a basic material, normally added with the chlorinated polyethylene, and (1) a derivative of 2,5-dimercapto-1,3, 4-thiadiazole or (2) a combination of 2,5-dimercapto-1,3,4-thiadiazole and an activator material such as an amine having a boiling point of 110.degree. C. or higher and a pk value less than 4.5.

Abstract: Flame retardant crosslinking admixtures of an olefinic rubber, a polyphenylene ether resin, an aromatic phosphate, a crosslinking agent, and optionally a stable brominated material are described. Electrically conductive articles, such as wires and cables, in which the compositions are incorporated as insulation material, and methods for their preparation, are also disclosed.

Abstract: A polyethylene resin composition comprising: (A) 50-99.9 parts by weight of an ethylene polymer; and (B) 0.1-50 parts by weight of a modified ethylene-.alpha.-olefin copolymer obtained by fluorinating an ethylene-.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene-.alpha.-olefin copolymer being prepared by copolymerizing ethylene with an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said catalyst component containing at least magnesium and titanium:______________________________________ (i) Melt index 0.01-100 g/10 min (ii) Density 0.860-0.910 g/cm.sup.3 (iii) Maximum peak tempera- not lower than 100.degree. C. ture (Tm) as measured according to differential scanning calorimetry (DSC) (iv) Boiling n-hexane insolu- not lower than 10 wt.

Abstract: Partially crosslinked thermoplastic elastomer which is produced as follows:(A) propylene (10-90 weight part), (B) halogenated butyl rubber (90-10 weight part, (A)+(B)=100 weight part), (C) olefinic rubber (10-120 weight part) and (D) mineral oil softening agent (5-120 weight part) are heated in the presence of (E) metal oxide and/or metal chloride. To the composition based on (A)-(E) (100 weight part), (F) polyolefin (300-1900 weight part) and (G) styrenic rubber (50-1100 weight part) are blended. The composition has particularly good moldability, compatibility, low temperature impact strength, and gloss, and can be used for large scale molding.