Phillips Petroleum Company

Other

Carl A Uraneck

John E Burleigh

Richard L Smith

Paul W Solomon

Charles M Selman

James D Brown

Earl Clark, Jr

Raymond L Cobb

Paul H Johnson

Oren L Marrs

Polymers containing repeat units based on substituted or unsubstituted pentadienyl chloride monomers are disclosed. The polymers are fast curing and some of the polymers are self-curing.

Pentadienyl chloride derived polymers

Solution polymerized rubbery conjugated diene homopolymers and copolymers with monovinylarenes are terminated with a hydrocarbyl phosphite or thiophosphite. The phosphite terminated polymers, particularly medium-vinyl polybutadiene, can be incorporated in rubber/carbon black/oil tread stock compounds employing up to 65 parts of rubber per 100 parts of polymer and up to 30 parts of oil per 100 parts of polymer for higher resilience, lower hysteresis, and generally higher tensile strength after vulcanization.

Rubbery conjugated diene polymers terminated with hydrocarbyl phosphites

A compositon sutiable for use as a molecular weight modifier in emulsion polymerization comprising a dispersion formed by admixing an organosulfur molecular weight modifier, an aqueous surfactant, an electrolyte, and a cosurfactant under conditions which reduce the average particle size of said molecular weight modifier to less than about 10,000 A.

Emulsion polymerization process utilizing a highly dispersed

Polymers are prepared using dienyllithium initiators, a reaction product of organolithium with a 1,4-diolefin, to polymerize olefinically unsaturated monomers such as conjugated dienes under solution polymerization conditions to provide unsaturated polymers, branched polymers, graft polymers, polymers prepared by sequential polymerization, and coupled polymers.

Dienyllithium initiated polymers

Alicyclic organomonolithium compounds having delocalized conjugated unsaturation are effective initiators in the preparation of polymers of conjugated dienes. Polymers of conjugated dienes, prepared with or without the alicyclic organomonolithium compounds, are terminated with alicyclic compounds having conjugated unsaturation. Either or both approaches can be used to provide polymers containing alicyclic conjugated unsaturated functional groups. Alternatively, polymers prepared from the alicyclic organomonolithium compounds can be coupled to produce linear or branched polymers. Polymers prepared from multichelic lithium compounds also can be terminated with alicyclic conjugated unsaturated compounds.

Polymers of conjugated dienes which have terminal conjugated unsaturated

Alicyclic organomonolithium compounds having delocalized conjugated unsaturation are effective initiators in the preparation of polymers of conjugated dienes. Polymers of conjugated dienes, prepared with or without the alicyclic organomonolithium compounds, are terminated with alicyclic compounds having conjugated unsaturation. Either or both approaches can be used to provide polymers containing alicylic conjugated unsaturated functional groups. Alternatively, polymers prepared from the alicyclic organomonolithium compounds can be coupled to produce linear or branched polymers. Polymers prepared from multichelic lithium compounds also can be terminated with alicyclic conjugated unsaturated compounds.

A highly dispersed emulsion of an organosulfur compound is obtained by use of a coemulsification system of a surfactant, and an electrolyte, and a cosurfactant and optionally a hydrocarbon; such as a petroleum sulfonate with potassium chloride and hexyl alcohol. Conversion of organosulfur compounds into highly dispersed emulsions increases the reactivity of the organosulfur compound as a molecular weight modifier in an aqueous emulsion polymerization system and permits the efficient use of high molecular weight organosulfur compounds.

Sulfur dioxide is removed from a sulfur dioxide-containing gas mixture by contacting the gas mixture with a monoolefin or diolefin.

Method of removing sulfur dioxide from gases

1,2-Dihydronaphthalene-type compounds and .alpha.-hydrocarbyl substituted styrenes are copolymerized utilizing organoalkali metal initiation under polymerization conditions.

Copolymers of 1,2-dihydro-naphthalene-type compounds and

Lithium salts of monohydroxyalkyl-substituted conjugated alkadienes are employed as comonomers in the polymerization of conjugated dienes, or conjugated dienes with monovinyl aromatic compounds, to produce polymers containing hydroxy functionality. The hydroxy functionality permits efficient curing.

Preparation of functional polymers

Organosulfur molecular weight regulators for emulsion polymerization systems, such as mercaptan compounds, are mixed and agitated with the aqueous emulsifier prior to use in emulsion polymerization systems. The modifying efficiency of the organosulfur molecular weight modifiers can be controlled by the degree of agitation. In many cases, adding the agitated mixture incrementally to the emulsion polymerization system further improves effectiveness of the modifier.

Mixing of organosulfur molecular weight modifier with emulsifier for

Pressure-sensitive adhesive incorporates an hydroxyl-containing polymer with alkyl silicon, boron or CO containing compounds. The hydroxyl-containing polymer is a rubbery polymer having an alkadienol constituent.

Adhesive formulations incorporating hydroxyl-containing polymers and

Bis(1,3-dienyl)dialkyltin, lead, and germanium compounds employed in the aqueous emulsion polymerization of conjugated dienes, optionally with vinyl comonomers, provide polymers with sufficiently high Mooney viscosity values as to be readily handled in plant operations, yet which exhibit controlled breakdown under milling to lower Mooney values suitable, for a variety of uses.

Cleavable branching agents in emulsion polymerization systems

Polymers containing internal unsaturation are modified by treatment with an olefin disproportionation catalyst.

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Bartlesville, OK, United States of America

Carl A Uraneck