The Dow Chemical Company

The Upjohn Co.

Cytec Surface Specialties

Arco Chemical Technology, L.p.

Surf Chip, Inc.

Ucb Chip Inc.

Other

Solutia Incorporated

Augustin T Chen

Kemal B Onder

Jong-Shing Guo

Robert G Nelb, Ii

Benjamin S Ehrlich

David J Goldwasser

Hong Zhao

Paul Edward Kestyn

Sharon D Trembley

Henry W Bonk

Paul J Moses

William J Farrissey, Jr

Tibor Pernecker

James M O'Connor

David E Henton

Lawrence E Katz

Douglas E Beyer

Laura Bauerle Weaver

John W Reisch

Stephen L Goldstein

Benjamin W Tucker

Peter J Whitman

Edward A Barsa

Henry G Barnowski, Jr

Willard F Burt

Hui C Liu

Karl W Rausch, Jr

Philip S Andrews

Leo Ternorutsky

Richard J Feegel

Removable, water-whitening resistant pressure sensitive adhesive (PSA) comprising a crosslinked aqueous emulsion polymer comprising (a) at least one hydrophobic monomer; (b) at least about 2 wt. % of at least one hydrophilic monomer; and (c) at least about 5 wt. % of at least one partially hydrophilic monomer; wherein the crosslinked aqueous emulsion polymer is crosslinked with an effective amount of at least one polyfunctional aziridine crosslinker, and the wt. % of monomers (a), (b), and (c) are based on the total weight of monomers (a), (b), and (c).

Removable, water-whitening resistant pressure sensitive adhesives

Pressure sensitive adhesive compositions having enhanced resistance to water-whitening comprising an aqueous emulsion polymer are disclosed. The polymer comprises the polymerization reaction product of a polymerizable aqueous emulsion comprising: (i) at least one hydrophobic alkyl acrylate or alkyl methacrylate ester of an alcohol, (ii) at least about 1 wt. % of at least one hydrophilic monomer, (iii) at least about 5 wt. % of at least one partially hydrophilic alkyl acrylate or alkyl methacrylate ester of an alcohol, and (iv) a water-soluble or water-dispersible polymerizable surfactant selected from compounds having a terminal allyl amine moiety, substituted phenyl compounds having at least one alkenyl substituent, polyoxyalkylene-1-(allyloxymethyl) alkyl ether sulfate salts, or mixtures thereof, and the average particle size of the polymer is less than or equal to 200 nm. Also disclosed are processes for preparing same.

Process for improving water-whitening resistance of pressure sensitive adhesives

Removable pressure sensitive adhesive compositions having enhanced resistance to water-whitening comprising a crosslinked aqueous emulsion polymer are disclosed. The crosslinked aqueous emulsion polymer comprises (a) at least one hydrophobic monomer; (b) greater than 1 wt. % of at least one hydrophilic monomer; (c) greater than 3 wt. % of at least one mono-olefinically unsaturated monomer having an aldehyde or ketone group; (d) optionally at least one partially hydrophilic monomer; and (e) an effective amount of at least one water-soluble or water-dispersible polymerizable surfactant; wherein the crosslinked aqueous emulsion polymer is crosslinked with an effective amount of at least one polyhydrazide crosslinker, the wt. % of monomers (a), (b), (c) and (d) are based on the total weight of monomers (a), (b), (c) and (d), and the mean particle size of the crosslinked aqueous emulsion polymer is less than about 400 nm.

In forming pressure sensitive adhesive microspheres by copolymerizing a non-ionic monomer of an alkyl acrylate or alkyl methacrylate ester of a non-tertiary alcohol and an acid monomer copolymerizable with said non-ionic monomer, an electrolyte is present during the polymerization to promote formation of solid rather than hollow microspheres.

Process for forming solid pressure sensitive adhesive polymer microspheres

A removable, plasticizer resistant pressure sensitive composition that is particularly useful for PSA applications on plasticizer containing vinyl films is provided. The pressure sensitive adhesive comprises: (a) at least one hydrophobic monomer; (b) about 0.2 to about 10 wt. % of at least one hydrophilic monomer; (c) about 1 to about 40 wt. % of one partially hydrophilic monomer (d) an effective amount of a crosslinker selected from diallyl maleate or a compound represented by the formula:wherein R is selected from hydrogen, methyl, or ethyl, and R' is selected from vinyl, allyl, or methallyl; wherein the pressure sensitive adhesive does not contain a plasticizer.

Removable pressure sensitive adhesives with plasticizer resistance properties

Pressure sensitive adhesive compositions having enhanced resistance to water-whitening comprising an aqueous emulsion polymer are disclosed. The polymer comprises the polymerization reaction product of a polymerizable aqueous emulsion comprising: (i) a hydrophobic monomer mixture of at least one alkyl acrylate or alkyl methacrylate ester of an alcohol wherein the alkyl portion of the alcohol is linear or branched and contains at least 4 carbon atoms, and at least one styrenic monomer, wherein the styrenic monomer is up to about 30 wt. % of the total hydrophobic monomer mixture, (ii) at least about 1 wt. % of at least one hydrophilic monomer, (iii) at least about 5 wt. % of at least one partially hydrophilic monomer selected from alkyl acrylate or alkyl methacrylate esters of an alcohol wherein the alkyl portion of the alcohol has 1 to 2 carbon atoms, N-vinyl-2-pyrrolidone, or mixtures thererof, and (iv) a water-soluble or water-dispersible polymerizable surfactant selected from compounds having a terminal allyl amine moiety, polyoxyalkylene-1-(allyloxymethyl) alkyl ether sulfate salts, or mixtures thereof, and the average particle size of the polymer is less than or equal to 200 nm. Also disclosed are processes for preparing same.

Environmentally safe, e.g. biodegradable, paint stripper compositions comprising 10-99 parts dimethyl esters of C -C aliphatic dibasic acids, 0.1-40 parts polyvinyl butyral and 1-90 parts water. The compositions can be mixed, e.g. in high shear to provide stable emulsions which strip paint, e.g. varnish from wood. Certain embodiments of the invention also comprise water soluble organic solvents, water-miscible organic solvents, surfactants, emulsifiers, thickeners and/or pigments.

Environmentally safe paint stripper

Environmentally safe paint stripper emulsion

A liquid surface coating composition which exhibits low gloss after curing or drying comprises binder resin other than polyvinyl acetal, pigment colorant and a gloss-reducing amount of matting agent consisting essentially of polyvinyl acetal containing acetal groups derived from one or more aliphatic or aromatic aldehydes having 1 to 10 carbon atoms, preferably polyvinyl butyral of weight average molecular weight between 10,000 to 500,000 Daltons.

Low gloss coating

Disclosed are new coatings compositions based on an HDI isocyanurate or biuret polyisocyanate and a bis(imine) reaction product of a diaminoalkane containing between two and five carbon atoms with an alkyl aldehyde containing between four and seven carbon atoms (advantageously a bis(imine) product of the reaction of 1,4-diaminobutane and isobutyraldehyde). The latter bis(imine) is completely miscible in HDI isocyanurate and biuret polyisocyanates, and, as a reactive diluent, allows the preparation of high performance coatings formulations that require only small amounts of solvents to achieve a conveniently sprayable viscosity.

Bis(isobutyraldimine) of 1,4-diaminobutane in HDI trimer and

The present invention relates to a composition being an aqueous dispersion of a polyurethane in water, said composition comprising water and the reaction product of (a) a water-dispersible isocyanate-terminated polyurethane prepolymer having an isocyanate content of between 1 and 15% by weight. The prepolymer comprises the following: an organic polyisocyanate adduct mixture having an average isocyanate functionality of between 2.0 and 4.0, and (b) an isocyanate reactive chain extender having a specified ratio of isocyanate reactive moiety to isocyanate index of the polyisocyanate adduct mixture. The polyisocyanate mixture must contain some dimer; however, other polyisocyanates, such as diisocyanates and polyisocyanate trimers, are advantageously added to the mixture. Also disclosed is a process for preparing this composition, and a method for coating a substrate with the composition.

Aqueous polyurethane dispersions containing uretidione

The toughness of a thermoplastic, rigid polyurethane is markedly improved by incorporating a mass ABS resin such as styrene/butadiene rubber grafted with a copolymer of styrene and acrylonitrile. This toughened polyurethane is particularly useful in making structural automotive body parts and housings for electrical appliances.

Thermally processable blends of high modulus polyurethanes and mass

Blends of (1) a crystalline polyamide derived from 4,4'-diphenylmethane diisocyanate (MDI) and a dicarboxylic acid and (2) a segmented polyesteramide derived from (a) MDI, (b) a carboxylic acid-terminated polyester prepolymer, a carboxylic acid-terminated polyether prepolymer or a carboxylic acid-terminated polycarbonate prepolymer and (c) from 0 to 10 moles of a dicarboxylic acid per mole of prepolymer, exhibit increased tensile ductility and are useful in the manufacture of headlamp reflectors, electrical connectors, molded circuit boards and the like.

Blends of semi-crystalline polyamides and polyesteramides

The tensile strength of a thermoplastic, transparent, aromatic polyester is markedly improved by incorporating into the polyester a thermoplastic, rigid polyurethane. The resultant transparent blend is particularly useful in making eyeglasses, toothbrushes, and screw-driver handles.

Thermally processable blends of aromatic polyesters and high modulus

High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins.

Growing community of inventors

Cheshire, CT, United States of America

Augustin T Chen