Shell Oil Comapny

The Procter Gamble Company

Sharon M Beshouri

Pui Kwan Wong

John Collins Dyer

Bryn Hird

Robert P Adamski

Dale Lee Handlin, Jr

Tonya L Garcia

Virittamulla Gamage Chamupathi

Polymers are made from 1,3,7-octatriene or like conjugated polyenes and a crosslinking agent having at least 2 activated double bonds such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as latexes that are useful as binders and adhesives.

Crosslinked polymers made from 1,3,7-octatriene and like conjugated

Process to prepare low density porous cross-linked polymeric materials

Absorbent article containing a foam comprising crosslinked polymers made

A process is provided for carbonylation of ethylenic unsaturation comprising the steps of: providing a catalyst system comprising a) a Group VIII metal compound, b) an organic phosphine, and c) and acid; and contacting acetylene, the catalyst system, carbon monoxide, hydrogen, and a nucleophilic compound under conditions effective to carbonylate the acetylene. The presents of hydrogen unexpectedly improves the yield of the desired product (i.e., acrylic acid or the ester thereof).

Carbonylation process

Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and initiators, useful in preparing low density porous crosslinked polymeric foams, are obtained by using a surfactant system containing (a) one or more sorbitan fatty acid ester or saccharide fatty acid ester and (b) a glycerol monofatty acid ester. A higher water to oil ratio water-in-oil emulsions can be formed with the same formulation by using the glycerol monofatty acid ester cosurfactant.

Process to prepare low density porous crosslinked polymeric materials

A method is disclosed for making a molded article of manufacture of polymerized .beta.-lactone which method involves injecting into a mold at least one .beta.-lactone monomer and at least one nucleophilic initiator, substantially polymerizing the .beta.-lactone in the mold and removing the resultant polymerized article from the mold.

Polymerization of .beta.-lactones under rim conditions

Polyol impurities in a sorbitan ester mixture is removed by treating a polyol-containing sorbitan ester dissolved in a solution containing a hydrocarbon and a polar organic solvent with an aqueous metal halide salt solution.

Sorbitan ester purification process

The present disclosure is directed to using a blend of sorbitan esters as a surfactant to produce a stable water-in-oil high internal phase emulsion in the preparation of a low density porous crosslinked polymeric material. This process produces low density, high capacity, porous, crosslinked, polymeric materials with improved absorption capacity and foam properties.

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Houston, TX, United States of America

Sharon M Beshouri