Abstract: High impact strength rubber modified styrene and styrene-acrylonitrile (SAN) thermoplastics are prepared by incorporating into the styrene or SAN copolymer a conjugated diene butyl rubber elastomer. Conventional processes are effective to provide products having suitable impact strength and related properties.

Abstract: A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content.

Abstract: High impact strength rubber modified styrene and styrene-acrylonitrile (SAN) thermoplastics are prepared by incorporating into the styrene or SAN copolymer a conjugated diene butyl rubber elastomer. Conventional processes are effective to provide products having suitable impact strength and related properties.

Abstract: Blown film sheeting is manufactured using a tubular film blowhead fitted with internal and external air cooling devices, a collapsible frame for flattening the tubular film and a slitting device positioned above the frame for producing the film in sheet form just prior to removal of the film on dual takeoff rolls. The invention is particularly adaptable for thermoplastic polyethylene film.

Abstract: Polyurethane paint is applied with good adhesion to a vulcanized rubber surface composed of halogenated butyl rubber or blends thereof with natural rubber, SBR rubber, EPDM rubber, polybutadiene rubber, acrylonitrile butadiene rubber, polychlorophrene rubber, synthetic polyisoprene rubber, or chloro sulfonated polyethylene rubber, the blends containing at least 30 phr halogenated butyl rubber, the rubber having been cured using a metal oxide or halide and an alkyl phenol polysulfide accelerator.

Abstract: An object is coated with a plastics film by a process in which a preformed solid plastics film is brought into contact with an object, the film is stretched over the object and substantially all the film made to adhere substantially permanently to the object. Thus, a tacky plastics film may be held in a frame and the object pushed through the film. Alternatively the object may be conveyed on a moving belt to a position adjacent to a heated plastics film and the film brought into contact with the object. The plastics film may for example be an ethylene-vinyl acetate copolymer.

Abstract: Sulfonated ionomers of low unsaturation polymers in latex form are prepared in an improved process comprising sulfonating a butyl rubber or EPDM elastomer cement with an acyl sulfate, passivating the sulfonated cement with an organic epoxide, such as propylene oxide, and emulsifying the product in water with an anionic emulsifying agent.

Abstract: A continuous process for the preparation of gel-free interpolymers from monomers comprising one or more halomethylated vinyl aromatic compounds and one or more Type III monoolefins is characterized by the use of a solvent or mixture of solvents in which the reactants and the interpolymers are soluble; a soluble Lewis acid or Friedel-Crafts catalyst, especially an organo-Group IIIa element halide catalyst; a reaction temperature in the range of -120.degree. C to -20.degree. C; and a conversion of at least one of the monomers to interpolymer in excess of 85 percent. The interpolymers may be crosslinked with nucleophilic reagents to produce elastomeric compositions; quaternized with nitrogen, sulfur or phosphorous compounds to give self-emulsifying latices useful as surface coatings or converted to sulfonic or carboxylic derivatives for the preparation of ionomer resins.

Abstract: Adhesive contact cements of sulfonated olefinically unsaturated elastomers (sulfobutyl rubber) containing from about 0.1 to about 5.0 mol % SO.sub.3 H neutralized, partially neutralized, or unneutralized, are admixed with tackifiers, i.e. phenolformaldehyde resins, polyisobutylene, alkylphenol formaldehyde resins, petroleum resins, etc. in an amount of between about 5 and about 90 phr in between about 10 and about 50 wt. % solids concentration in organic solvents. These cements are used for adhering porous or non-porous materials such as textiles, wood, cloth, sheets or strip of metals, plastics, etc. to each other. High green strength, high tensile strength, high resistance to peel, even at elevated temperatures, water impermeability, etc. characterize such adhesive layers in laminates. A preferred solvent, 90% toluene, 10% isopropyl alcohol is used in compounding the cement and preferably an organic amine, e.g.

Abstract: An EPDM elastomer (e.g. ethylene/propylene/ethylidene norbornene) is blended with polypropylene (70-98 wt. %) and a halogenated phenol resin (1-20 parts per 100 parts of the elastomer). The blend may be cured and molded to provide articles having high flexural modulus and high impact resistance at low temperatures.

Abstract: Volatile polar vehicles such as water or organic solvents, are removed from nonpolar materials by passing said material through at least one pneumatic conveyor resonating cavity operating at a microwave frequency of about 600 to about 50,000 MHZ. For example, a polymer such as polyvinyl chloride may be dried by conveying the polymer through said pneumatic conveyor operating at a frequency of 915 MHZ for a time sufficient to reduce the volatiles content to about 5 wt. % and subsequently conveying the partially dried material through a second pneumatic conveyor resonating cavity operating at a microwave frequency of 2450 MHZ for a time sufficient to reduce the polar vehicle content to below 0.5 wt. %.The resonating cavities may constitute a single pneumatic conveyor having zones operating at different frequencies, said zones being isolated from one another by microwave suppressors such as "eggcrate" type suppressors.

Abstract: A composition suitable for fabricating into a self-sealing film comprises:I. 95.0 to 99.9 wt.% of either a copolymer of ethylene and vinyl acetate, said copolymer containing 0.10 to 1.95 wt.% of the vinyl acetate, or 95.0 to 99.9 wt.% of a mixture of a thermoplastic polyolefin and a copolymer of ethylene and vinyl acetate, the proportion of polymerized vinyl acetate in the mixture being from 0.10 to 1.95 wt.% andIi. 0.01 to 5.0 wt.% of a partial ester of a carboxylic acid and a polyol, e.g. sorbitan monolaurate.The film can be made for example by tubular blowing.

Abstract: Tire flexing components having improved ozone and flex and weather resistance are prepared by blending a general purpose rubber with a chlorinated EPDM containing about 0.1 to about 0.9 wt. % chlorine. The products so formed are useful for tire components that are subject to severe flexing such as coverstrips and sidewalls.

Abstract: Conjugated diene butyl (CDB) elastomer copolymers are cured with a system comprising dihydroxybenzene and an oxidant or oxidation catalyst whereby benzoquinone is formed which acts as the crosslinking dienophile. The process allows for satisfactory cures at room temperature.

Abstract: The adhesive strength of a metallic layer prepared by vacuum metallizing on an unsaturated carboxylic acid modified polyolefin article is substantially increased by heating below the melting point of the polyolefin after the metallization. Preferable heating temperature is 92.degree.-157.degree. C. for polypropylene and heating time is 10 sec. - 1 hour. An aluminum layer obtained by this invention has remaining ratio of 100% after cross cut test.

Abstract: Tires having both improved wet skid resistance and low temperature performance properties are prepared by blending into conventional tire tread compositions a copolymer of isobutylene and cyclopentadiene (CPD) having a CPD content of between 5 and less than 20 mol %. The tire tread composition preferably contains about 30 wt. % of cyclopentadiene copolymer. Low temperature properties are improved compared to compositions containing greater than 20 mol % CPD in the copolymer.

Abstract: The invention relates to polymerizing olefins in the presence of organic fibers and then removing the fibers to obtain hollow polyolefin resins.

Abstract: Sulfonated ionomers of low unsaturation polymers in latex form are prepared in an improved process comprising sulfonating a butyl rubber or EPDM elastomer cement with an acyl sulfate, passivating the sulfonated cement with an organic epoxide, such as propylene oxide, and emulsifying the product in water with an anionic emulsifying agent.

Abstract: A composition suitable for fabricating into a self-sealing film comprises:I. 85 to 99.8 wt.% of a thermoplastic polyolefin, e.g. polyethylene,Ii. 0.1 to 10.0 wt.% of a partial ester of a carboxylic acid and a polyol e.g. sorbitan mono laurate, sorbitan monostearate or sorbitan monobehenate andIii. either 0.1 to 10 wt.% of hydrogenated hydrocarbon resin or 0.1 to 10 wt.% of polybutene or polyisobutene, provided the combined weights of (ii) and (iii) is not more than 15 wt.%.The film may be made by tubular blowing.

Abstract: A process for preparing latices in ionomeric form from copolymers of an isoolefin containing from 4 to 7 carbon atoms and a conjugated multiolefin containing from 4 to 14 carbon atoms, where a major portion of said conjugated multiolefin has conjugated diene unsaturation, is disclosed. The process principally comprises forming an adduct of conjugated diene butyl rubber with a dienophile capable of implanting carboxylic acid functionality on the polymer such as maleic anhydride, emulsifying the adduct thus formed, and neutralizing the resulting emulsion with a suitable base. Highly improved ionomeric latices are also disclosed, having an average particle size of less than about 1 micron, average solids contents easily adjusted from between about 5 to 70 weight percent solids, and having a pH, depending on the emulsifier used, of from 3 to 12. Films cast from these latices have an improved tensile at break of greater than about 2500 psi.