Abstract: The present invention is directed toward novel copolymers of ethylene and at least one other alpha-olefin monomer which copolymers have an intermolecular compositional distribution (CD), such that at least about 25% by weight of the polymer differs from the mean ethylene content of the polymer by at least plus or minus 5 wt % ethylene and a relatively narrow molecular weight distribution (MWD) such that the weight average molecular weight (Mw) of the polymer divided by the number average molecular weight (Mn) by the polymer is not greater than about 5.0.The polymers of this invention, which are characterized by exceptional green strength and good processing properties, may be prepared using a catalyst system comprising:a) a vanadium compound with a valence of 3 or more;b) a triorgano aluminum compound; andc) a specific halogenated organic promoter used in catalytic amounts.

Abstract: A covulcanizable polymer blend of a highly unsaturated rubbery polymer and a sulfer imide-modified teropolymer of ethylene, a higher alpha olefin and a non-conjugated diene is provided. Processes for preparing the blend and vulcanizing the blend are also provided.

Abstract: N-halothiosulfonamide-modified non-rubbery thermoplastic polyolefins are provided. The modified polyolefin products are prepared by reaction of a non-rubbery thermoplastic polyolefin polymer with an N-halothiosulfonamide in the absence or, preferably, in the presence of a catalyst. The preferred catalyst for use in the preparation of these products are salts of weak acids of specified metals.

Abstract: Ozone resistant vulcanizable copolymers of isoolefins with non-conjugated dienes of the general formula: ##STR1## where R.sub.1 is ##STR2## and R.sub.2 is alkyl of 1 to 6 carbon atoms and vulcanizates thereof. The copolymers are prepared by polymerization in the presence of Lewis acids.

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: A copolymer of a C.sub.4 to C.sub.7 isoolefin and a para-alkylstyrene is provided as well as the corresponding halogenated, functionalized and grafted derivatives thereof. Processes for producing these copolymers are also provided.

Abstract: Polymers of olefin monomers and a substantially uniform concentration of carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers. Polymers of olefin monomers and carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers substantially devoid of halogen. Method for preparing polymers by reacting carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers with non-halogenated organometallic compounds to form masked, functional group-containing monomers and polymerizing polymer chain monomers with the masked, functional group-containing monomers to produce a polymer chain. Method for forming masked, functional group-containing monomers by reacting carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers with non-halogenated organometallic compounds. Masked, carboxyl, hydroxyl, thio, amino, carbonyl and imino functional group-containing monomers.

Abstract: N-halothiosulfonamide-modified rubber products are provided. The modified rubber products are prepared by reaction of a rubber, such as a butyl rubber or a halogenated butyl rubber, with a N-halothiosulfonamide in the absence or in the presence of a catalyst.

Abstract: A thermoplastic resin composition which comprises 1 to 98 parts by weight of polyolefin (A), 1 to 49 parts by weight of modified polyolefin (B) obtained by reacting a polyolefin with an unsaturated carboxylic acid or a derivative thereof, 1 to 98 parts by weight of polyamide (C) [provided that (A)+(B)+(C)=100 parts by weight], 5 to 50 parts by weight of modified ethylene-.alpha.-olefin copolymer (D) obtained by reacting a low-crystalline ethylene-.alpha.-olefin copolymer with an unsaturated carboxylic acid or its derivative, and a metal compound (E) in an amount of 0.5 to 5 times the molar quantity of the acid added to said component (B) and said component (D).The thermoplastic resin composition is preferably used for producing products excellent in both impact resistance and surface luster.

Abstract: Disclosed herein are block and random graft copolymer compositions comprising a base polymer of crystalline polyolefin to which is grafted at least one side or end chain of a hydroxy-ended polylactone, the process for making said graft copolymer compositions, and use thereof in engineering thermoplastic resins.

Abstract: The invention relates to certain low friction abrasion resistant polymer coatings. The polymer coatings consist of thermoplastic materials based on blends of elastomers with high density polyethylene comprising a high molecular weight component. The appropriate balance of crystallinity, durability and flexibility can be achieved by selecting the proper amount of low, medium and high molecular weight high density polyethylene. The coating is particularly useful for weatherstripping material for automobile window channels.