Abstract: This invention is directed to treating the surfaces of rubber-reinforcing materials with a gas plasma of O.sub.2 and CF.sub.4 to activate the surfaces to make them more receptive to adhesives. Optionally the surfaces of the reinforcing materials may be exposed to a polymerizing gas plasma such as a thio-carbon to coat the surfaces of the reinforcing material with substances that promote adhesion to rubber. The treated surfaces have been shown to adhere directly to rubber when vulcanized in the normal fashion.

Abstract: This invention is directed to treating the surfaces of rubber-reinforcing materials with a gas plasma of O.sub.2 and CF.sub.4 to activate the surfaces to make them more receptive to adhesives. Optionally the surfaces of the reinforcing materials may be exposed to a polymerizing gas plasma such as a thio-carbon to coat the surfaces of the reinforcing material with substances that promote adhesion to rubber. The treated surfaces have been shown to adhere directly to rubber when vulcanized in the normal fashion.

Abstract: Pure syndiotactic 1,2-polybutadiene is a thermoplastic resin which has double bonds attached in an alternating fashion to its polymeric backbone. Films, fibers and molded articles can be made utilizing syndiotactic 1,2-polybutadiene. It can also be blended into rubbers and cocured therewith. Syndiotactic 1,2-polybutadiene can be made by solution, emulsion or suspension polymerization. It typically has a melting point which is within the range of about 195.degree. C. to about 215.degree. C. However, it is often desirable for the syndiotactic 1,2-polybutadiene to have a melting point of less than about 195.degree. C. This invention discloses a process for preparing syndiotactic 1,2-polybutadiene having a melting point of less than about 195.degree. C.

Abstract: There is disclosed a process for the preparation of gel-free rubbery copolymers of cyclopentene and dicyclopentadiene by means of a catalyst system comprising (A) a soluble tungsten halide or oxyhalide, (B) an organoaluminum compound, (C) an alcohol and (D) a polyhalogenated phenol.

Abstract: There is disclosed a process for the preparation of polymers of cyclopentene or copolymers of cyclopentene with non-conjugated unsaturated alicyclic compounds containing at least 7 carbon atoms in the ring and at least one double bond in the ring or polycyclic olefins or non-conjugated diolefins by the use of the catalyst system comprising (a) tungsten halides or oxyhalides, (b) an organoaluminum compound, (c) an alcohol, and (d) a halogenated phenol.

Abstract: There is disclosed a process for the preparation of cyclopentene which comprises selectively hydrogenating cyclopentadiene in the liquid phase by contacting cyclopentadiene with hydrogen in the presence of a hydrogenation catalyst comprising a highly dispersed form of nickel in which a substantial amount of water and certain surfactants are employed in the reaction mixture.

Abstract: There is disclosed a cycloolefin metathesis process comprising polymerizing (1) an unsaturated alicyclic compound containing 5 carbons and one double bond in the ring and (2) polycyclic non-conjugated diolefins by the use of a catalyst system comprising (a) tungsten halides and oxyhalides, (b) at least one compound such as alkylaluminum sesquihalides, dialkylaluminum halides, alkylaluminum diahlides or trialkylaluminums, (c) an alcohol, and (d) pentachlorophenol or pentabromophenol.

Abstract: There is disclosed a process for the preparation of cyclopentene which comprises selectively hydrogenating cyclopentadiene in the liquid phase by contacting cyclopentadiene with hydrogen in the presence of a hydrogenation catalyst comprising a highly dispersed form of nickel in which water is employed in the reaction medium.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) alkoxysilanes. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which may optionally contain a halogen substituent and (D) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which may optionally contain a halogen substituent and (D) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.