The Dow Chemical Company

Donald G Prier

Robert F Harris

Frank T Cook

Daniel D Webb

This invention relates to a process for preparing polyisocyanate-based polymers which have the ability to dissipate static electrical charge. The polymers are rendered semi-conductive by having incorporated into them an anti-static additive which comprises an ionizable metal salt dispersed in a polyalkylene carbonate polyol.

Process for preparing anti-static polyisocyanate-based polymers via

Modified mixtures of poly(alkylene carbonate) polyols and polymers of certain unsaturated esters are prepared by (A) forming a mixture of a polymer of an ethylenically unsaturated ester and a polyalkylene carbonate polyol and (B) subjecting such mixture to conditions sufficient to induce a transesterification reaction between the polymer of an acrylic ester and a polyalkylene carbonate polyol.

Mixtures of poly(alkylene carbonate) polyols and polymers of

In one aspect, this invention is a polyurethane foam which is the reaction product of a reaction mixture comprising a poly(alkylene carbonate) polyol, a silicone surfactant, a blowing agent, and a polyisocyanate. In another aspect, this invention is an active hydrogen-containing composition comprising a poly(alkylene carbonate) polyol having an equivalent weight from about 100 to about 3000, a blowing agent and a silicone surfactant.

Flexible polyurethane foams prepared from poly(alkylene carbonate)

A process for modifying a poly(alkylene carbonate) polyahl, which comprises reacting the poly(alkylene carbonate) polyahl, with at least one modifier having at least one active hydrogen moiety or cyclic anhydride, optionally in the presence of a catalyst under transesterification conditions to form a modified poly(alkylene carbonate) polyahl wherein the modifier is chemically bonded to the backbone of the poly(alkylene carbonate) polyahl.

Process for preparing modified poly(alkylene carbonate) polyahls

The invention is a block copolymer useful in the preparation of polyurethanes. The polyether polycarbonate block copolymer comprises

Novel polyether polycarbonate block copolymers and polyurethanes

This invention is a method of removing alkaline catalysts from polyether polyols and polyalkylene carbonate polyols which comprises

Removal of alkaline catalysts from polyether polyols and polyalkylene

Propylene glycol and dipropylene glycol diesters are prepared by reacting dichloropropyl ethers with a carboxylic acid salt, e.g., sodium acetate, and the corresponding carboxlyic acid, e.g., acetic acid. The by-product sodium chloride is insoluble in the acetic acid and easily separated from the reaction mixture. The diesters can be hydrolyzed to their respective glycols.

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Baton Rouge, LA, United States of America

Donald G Prier