The Dow Chemical Company

The Cynara Co.

Kent B McReynolds

Ritchie A Wessling

Stephen E Bales

Henry N Beck

George J Quarderer, Jr

Thomas O Jeanes

Thomas Caldwell Young

David J Moll

Alan F Burmester

Charles Z Hotz

Bethanne L Smith

Ronald M Lacher

James E Clark

Robert T Krueger

Kenneth R Meath

James E Schwartz

Jeffrey C Schletz

Donald M Blake

Gas separations utilizing glassy polymer membranes at sub-ambient

This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5.degree. C. or less so as to achieve superior separation of gas components.

A multilayered structural article having improved resistance to delamination and having a reduced coefficient of linear thermal expansion (CLTE) relative to that of the thermoplastic resin(s) employed in its preparation comprises a core layer of a highly filled composite paper having outer layers of thermoplastic resin adhered thereto.

Composite paper reinforced thermoplastic article

A three layer structural sheet material having improved resistance to delamination comprising a core layer of a composite paper having outer surface layers of thermoplastic resin adhered to both major surfaces thereof.

Composite paper reinforced thermoplastic sheet

An improved hollow fiber membrane device is obtained using an inner wrap extending no farther than 25 percent of the diameter of the hollow fiber bundle from the central, longitudinal axis of said bundle. The fibers within the inner wrap are not necessarily hollow. Optionally, an elastic outer wrap is also employed about the bundle.

Hollow fiber membrane device with inner wrap

Non-woven fabrics are prepared from synthetic fibers by impregnating the fibers with a liquid binder system containing a polymer of from 35 to 60 weight percent of a hard monomer, 0 to 45 weight percent of butadiene or isoprene, 10 to 50 weight percent of an acrylate having from 1 to 8 carbon atoms in the ester portion and 1 to 5 weight percent of an ethylenically unsaturated mono- or dicarboxylic acid.

Method of making non-woven fabrics from synthetic fibers

Compositions comprising asbestos fibers and blends of at least two latexes wherein the solids in the blended latexes comprise (A) from 5 to 40 parts by weight of a carboxylated copolymer comprising 10 to 25 parts by weight of methacrylic acid and correspondingly 90 to 75 parts by weight of at least one unsaturated carboxylic acid ester of the formula CH.sub.2 .dbd.C(R.sub.2)COOR.sub.1, wherein R.sub.1 is an alkyl group containing 1 to 8 carbon atoms and R.sub.2 is hydrogen or methyl and (B) 95 to 60 parts by weight of at least one synthetic rubber. The binder composition employed in this invention provides asbestos sheets having utility in flooring felts and gasket materials having relatively little change in elongation at room temperature, at 350.degree. F. and after soaking in dioctylphthalate.

Blend of asbestos fibers, carboxylated copolymer latex and synthetic

A sheet which is a composite of (A) from about 1 percent to about 30 percent of a water-dispersible fiber such as wood fiber, (B) from about 2 percent to about 30 percent of a film-forming, water-insoluble, organic polymer such as a copolymer of styrene and butadiene and (C) from about 60 percent to about 95 percent of a finely-divided, substantially water-insoluble, non-fibrous, inorganic filler such as magnesium hydroxide is prepared by steps comprising:

Growing community of inventors

Midland, MI, United States of America

Kent B McReynolds