Union Carbide Corporation

Union Carbide Chemicals & Plastics Technology Corporation

Mahmoud R Rifi

Kiu H Lee

Mark J Kriss

Han-Tai Liu

Arakalgud V Ramamurthy

Carlo F Martino

A gas phase process for the production of an in situ polyethylene blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a magnesium/titanium based catalyst system including an activator and a cocatalyst in each of two fluidized bed reactors corrected in series, under polymerization conditions, with the provisos that:

Process for producing an in situ polyethylene blend

A process for the production of EPDM comprising reacting ethylene, propylene, ethylidene norbornene, and hydrogen, in the gas phase, in a fluidized bed, under polymerization conditions, in the presence of a catalyst system comprising:

Process for producing ethylene/propylene/ethylidene norbornene rubbers

A pre-formed composition having essentially no yield point comprising a blend of:

Polyethylene blends

A process for substantially eliminating surface melt fracture during extrusion of a thermoplastic polymer such as a molten narrow molecular weight distribution, linear, ethylene copolymer, by incorporating into the thermoplastic polymer a wood rosin or wood rosin derivative.

Process for substantially eliminating surface melt fracture during

Thermoplastic olefins

Process for the extrusion of low density polyethylene

A process for reducing the odor of isotactic polypropylene containing an odor producing unsubstituted or substituted benzoic acid ester by admixing molten isotactic polypropylene with a compound capable of undergoing transesterification with the odor producing ester, said transesterification compound being (i) a partially esterified glycerol; (ii) an expoxide; (iii) a monofunctional or polyfunctional alcohol; (iv) an aliphatic acid ester; or (v) mixtures thereof wherein the transesterification compound is of such functionality and/or of sufficient molecular weight to yield an ester of a molecular weight of at least about 300 upon undergoing ester interchange with said odor causing benzoic acid ester.

Process for reducing odor in isotactic polypropylene

An impact polypropylene composition comprising:

Impact polypropylene

Chlorosulfonated alkylene-alkyl acrylate copolymers prepared by reacting, in the absence of a solvent or diluent, a granular alkylene-alkyl acrylate copolymer with a gaseous chlorosulfonating agent. The granular, elastomeric chlorosulfonated alkylene-alkyl acrylate copolymers can be used as extrudates about wires and cables and can be formed into film material characterized by excellent optical properties.

Chlorosulfonated alkylene-alkyl acrylate copolymers

A process of modifying ethylene polymers by reacting granular ethylene polymers having a density of about 0.87 to about 0.92 gram per cc and a pore volume of about 0.1 to about 1 cc per gram with a gaseous chlorinating agent to produce elastomeric, granular, chlorinated polymers having a tensile modulus of less than about 2,000 psi and a crystallinity of less than about 10 percent.

Preparation of elastomeric, chlorinated ethylene polymers

A process of modifying ethylene polymers by reacting granular ethylene polymers having a density of about 0.87 to about 0.93 gram per cc and a pore volume of about 0.1 to about 1 cc per gram with a gaseous chlorosulfonating agent to produce elastomeric, granular, chlorosulfonated polymers having a tensile modulus of less than about 2,000 psi and a crystallinity of less than about 10 percent.

Preparation of elastomeric, chlorosulfonated ethylene polymers

Water-curable, silane modified chlorosulfonated olefinic polymers, particularly desirable for use as coverings about wires and cables, produced by reacting a mixture containing a chlorosulfonated olefinic polymer and a hydrolyzable silane having cyclic oxygen, sulfur or nitrogen functionality.

Water-curable, silane modified chlorosulfonated olefinic polymers and a

There is disclosed a process for producing water-dilutable coating compositions by subjecting a reaction mixture containing a phenolic resin and either a drying or semi-drying oil and an alpha, beta-ethylenically unsaturated carboxylic acid anhydride, or an adduct thereof, and a secondary or tertiary amine catalyst, to an elevated temperature for a period of time sufficient to produce a ternary adduct. Said ternary adduct is reacted with water and neutralized to produce a water-dilutable coating composition. The application also discloses a one-stage reaction for the production of a ternary adduct of tung oil, alpha, beta-ethylenically unsaturated carboxylic acid anhydride, and phenolic resin.

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Kendall Park, NJ, United States of America

Mahmoud R Rifi