The Dow Chemical Company

David L Wolfe

Frederick P Corson

Dane Chang

Arthur R Sexton

A composition useful as a pavement material comprising a mixture of asphalt and a polymer of an .alpha.-olefin, or an interpolymer of an .alpha.-olefin, and at least one copolymer selected from the group consisting of an .alpha., .beta.-unsaturated carboxylic acid, a monomer of an .alpha.,.beta.-unsaturated carboxylic acid, a vinyl ester of alkanoic acid, and carbon monoxide.

Bituminous materials

A composition useful as a pavement material comprising a mixture of asphalt and a polymer of an .alpha.-olefin, or an interpolymer of an .alpha.-olefin, and at least one copolymer selected from the group consisting of an .alpha.,.beta.-unsaturated carboxylic acid, a monomer of an .alpha.,.beta.-unsaturated carboxylic acid, a vinyl ester of alkanoic acid, and carbon monoxide.

A composition useful as a pavement material comprising a mixture of asphalt, aggregate and an interpolymer of an .alpha.-olefin monomer selected from the group consisting of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or an ionomer of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid.

Bituminous compositions having high adhesive properties

Excellent and very high quality impact-resistant polymer products products are comprised of particular polyether elastomer constituents which modify and attribute many desirable properties and characteristics to the interpolymerized end product; impact styrene polymers being especially advantageous varieties thereof. In-situ polymerization, with specific coordination catalyst systems, is followed to form polyether polymers of epoxidized monomer constituents provided directly dissolved (or dispersed) in the major addition-polymerizable monomer utilized. The rubbery polyether elastomer so made is then interpolymerized with the major monomer to provide the advantageous high impact end product.

Elastomeric polyether-containing impact polymer products

A polymerization process for vicinal alkylene oxides and a catalyst for said polymerization process where the catalyst comprises a composition prepared by contacting an alkyl aluminum compound with an organic nitrogen base compound selected from secondary nitrogen-containing compounds having basicity less than or about equal to the basicity of dimethylamine, with a .beta.-diketone and with water where the components are combined in prescribed molar ratios. The molecular weight of the resultant polymers produced in a process utilizing such a catalyst may be controlled by adjusting the ratio of the secondary amine component and very high molecular weight polymers may be obtained, as determined by their intrinsic viscosities. The very high molecular weight polymeric products are useful as elastomers and as thickeners for various aqueous or organic solutions.

Vicinal alkylene oxide polymerization

Vicinal alkylene oxide polymerization and catalysts thereof

In a process for removing --R groups, where --R is tertiary butyl or tertiary amyl, from a polymer containing the monomeric unit represented by the formula ##STR1## by contacting the polymer with a sulfonic acid, the improvement of contacting under essentially anhydrous conditions.

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Midland, MI, United States of America

David L Wolfe