Rohm and Haas Company

Albert Benner Brown

Dennis Paul Lorah

Robert Victor Slone

David Hamilton Young

Ralph Craig Even

Alvin Michael Maurice

Matthew Steward Gebhard

Patricia Marie Lesko

Xun Tang

Robert Mitchell Blankenship

Curtis Alan Schwartz

Robert H Gore

Mark Robert Winkle

Warren Harvey Machleder

Travis E Stevens

Frederick James Schindler

James Watson Neely

Eric Jon Langenmayr

David William Whitman

Ronald Scott Beckley

George H Redlich

Shang-Jaw Chiou

Thomas Glenn Madle

Anton Georges El A'mma

Susan Jane Fitzwater

Constance A Lane

William H Harrop

James Tinney Brown

Paul H Gehlhaus

Ted Tysak

Porous films are provided which include a blend of a film forming polymer and a non-film forming material, the film having a network of pores or channels throughout the film. The porous polymer films are formed between 0&#xb0; and 80&#xb0; C., retain porosity at elevated temperatures and are non-friable. A process for preparing porous polymer films and their applications are disclosed.

Process for producing porous polymer films

Provided are improved coatings, polymeric dispersions, and polymeric composites, which include crosslinked polymeric nanoparticles (hereafter 'PNPs'). Also provided are methods for forming improved coatings, polymeric dispersions, and polymeric composites, which include PNPs. The PNPs have polymerized units of at least one multi-ethylenically-unsaturated monomer have a mean diameter of from 1 to 50 nanometers. PNPs having polymerized units of at least one multi-ethylenically-unsaturated monomer and at least one surface-active monomer are also provided.

Coating and coating composition

An aqueous composition suitable for use, when dry, as an improved coating is provided including an aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from greater than 20&deg; C. to 80&deg; C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0-7.5%, by weight based on the total weight of the polymer, ethylenically unsaturated acid monomer in the presence of 0.01-1.0%, by weight based on the total weight of the polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms and, optionally, at least one other oxidant. A method of preparing the emulsion polymer, a method for providing a coated substrate wherein the coating contains the emulsion polymer having a Tg from &minus;20&deg; C. to 80&deg; C., and a method for improving the scrub resistance of a coating by including the emulsion polymer having a Tg from &minus;20&deg; C. to 80&deg; C. are also provided.

Coating composition

Porous films are provided which include a blend of a film forming polymer and a non-film forming material, the film having a network of pores or channels throughout the film. The porous polymer films are formed between 0&deg; and 80&deg; C. retain porosity at elevated temperatures and are non-friable. A process for preparing porous polymer films and their applications are disclosed.

Porous non-friable polymer film

An aqueous composition suitable for use, when dry, as an improved coating is provided including an aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from greater than 20&deg; C. to 80&deg; C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0-7.5%, by weight based on the total weight of the polymer, ethylenically unsaturated acid monomer in the presence of 0.01-1.0%, by weight based on the total weight of the polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms and, optionally, at least one other oxidant. A method of preparing the emulsion polymer is also provided.

Disclosed herein are core-shell polymers having an alkali-insoluble, emulsion polymer core and an alkali-soluble, emulsion polymer shell attached or associated with said core so that upon dissolving said shell with alkali, a portion of said shell remains attached or associated with said core. Also disclosed are compositions wherein said shell polymer has been neutralized and substantially, but not totally, dissolved so as to form a blend of neutralized core-shell polymer and an aqueous solution of neutralized shell polymer.

Polymers comprising alkali-insoluble core/alkali-soluble shell and

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Doylestown, PA, United States of America

Albert Benner Brown