Rohm and Haas Company

Shang-Jaw Chiou

Frederick James Schindler

Anton Georges El A'mma

Miao-Hsun L Sheng

Ari Kenneth Kar

Robert Francis Dougherty

Robert Mitchell Blankenship

Edwin Hugh Nungesser

Curtis Alan Schwartz

Dennis Paul Lorah

Robert H Gore

Mark Robert Winkle

Robert Victor Slone

Warren Harvey Machleder

Travis E Stevens

James Watson Neely

Eric Jon Langenmayr

Donald A Winey

Ronald Scott Beckley

David William Whitman

Scott Lind Egolf

George H Redlich

John William Hook, Iii

Joseph M Hoefler

Bradley Keith Hageman

Albert Benner Brown

Susan Jane Fitzwater

John G Brodnyan

Jin-Chih Chiang

John David Whiteman

James Tinney Brown

George A Papsin, Jr

Mark P De Grandpre

Dianzhi Yang

Min-Chi Tsai

Anton George El A'mma

John D Whiteman

Robert F Dougherty

The present invention provides aqueous amphiphilic emulsion copolymer compositions comprising one or more aqueous phase copolymer, a residue of one or more hydrophilic chain transfer agent, and a residue of one or more hydrophobic chain transfer agent, as well as methods of making such copolymers in water or an aqueous liquid by copolymerizing a monomer component of from 20 to 80 wt. %, based on the weight of the monomer component, of a hydrophilic group-containing monomer and the remainder of a copolymerizable ethylenically unsaturated monomer or prepolymer in the presence of a mixed chain transfer agent component comprising a hydrophilic chain transfer agent, such as 3-mercaptopropionic acid, and a hydrophobic chain transfer agent, such as N-dodecyl mercaptan. The aqueous amphiphilic emulsion copolymers of the present invention are storage stable and exhibit excellent viscosity control even in high solids compositions, e.g. from 50 to 80 wt. % of the composition. The high solids compositions can be diluted at the point of use, thus reducing shipment costs.

Aqueous amphiphilic copolymer emulsions having controlled viscosity and methods for making the same

The present invention provides aqueous matte coating compositions comprising a binder component B) and a polymeric duller component A) composed of particles of one or more multi-stage copolymer or single stage crosslinked (co)polymer, e.g. crosslinked t-butyl (meth)acrylate, the duller component particles A) having an average diameter of 1-20 &#x3bc;m. Components A) and B) are compatible. Preferably, the duller component A) is acrylic; more preferably, components A) and B) are acrylic. The aqueous compositions provide matte coatings having haptic or feel (soft touch) properties, film and appearance properties, including burnish resistance and low color loss.

Aqueous compositions comprising polymeric duller particle

An oligomeric composition containing oligomers and at least one stabilizing component is provided. An aqueous dispersion composition containing the oligomeric composition is useful for treating tanned leather to provide leather with increased softness or strength. Also provided are a method of treating tanned leather using the composition and an article containing the treated leather.

Composition and method for preparing leather

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

A pigment dispersant including 80-97% by weight, based on the weight of thepigment dispersant, of a first polymer comprising as copolymerized units 15-75% by weight, based on the first polymer weight, ethylenically unsaturated carboxylic acid-functional monomer, the polymer having a Mw from 4,000 to 16,000, and the polymer having a Tg greater than 70&deg; C.; and 3-20% by weight, based on the weight of the pigment dispersant, of a poly(ethylene oxide/propylene oxide) block second polymer having an Mw from 3,000 to 20,000 and an HLB value of 16 to 32 is provided. And the invention relates to a method for dispersing a pigment in an aqueous medium using the pigment dispersant, an aqueous pigment dispersion including the pigment dispersant, and an aqueous ink including the pigment dispersion.

Pigment dispersant composition

An aqueous leather coating composition containing a multi-stage emulsion polymer having a stage of Tg<10&deg; C. which contains a copolymerized carboxylic acid and which has been contacted with a divalent metal oxide, hydroxide, or carbonate and a polymer stage of Tg>20&deg; C. which has been prepared in the presence of 1% to 15% by weight based on the weight of that stage of chain transfer agent is provided. Also, provided is a method for coating leather with the composition of this invention.

Leather coating composition

Redispersible polymer powders made by core-shell polymers having an alkali-soluble emulsion polymer shell and an aqueous-insoluble emulsion polymer core wherein the core and the shell polymers are chemically grafted by utilizing a polyfunctional compound. The core-shell polymers are produced by a two-stage sequential emulsion polymerization process in which an alkali-insoluble emulsion polymer core is polymerized in the presence of an alkali-solubilized emulsion polymer. When the core-shell polymer powders of this invention are employed as a cement modifier, improvements in the powder physical properties and cement mortar properties are realized.

A redispersible core-shell polymer powder

A process for preparing large dimension emulsion polymer particles and the polymer products of the process are disclosed. In one embodiment, the invention provides particles having a high aspect ratio, having a shape described by a long axis and an intersecting short axis. These particles range in shape from egg-like, through rod-like, up to extended filaments. In another embodiment, the invention relates to large, nearly spherical emulsion polymer particles.

Process for preparing large dimension emulsion polymer particles,

Multi-stage polymer process and composition having an alkali-insoluble emulsion polymer and an alkali-soluble polymer are produced by a two-stage sequential emulsion polymerization process. When the multi-stage polymers of this invention are utilized as cement modifiers, improvements in cement mortar physical properties are realized.

Multi-stage polymer latex cement modifier and process of making

Modified solution polymer compositions useful for films, coatings, caulks, adhesives, and mastics having advantitious properties such as low surface tack, short drying time, high tensile strength, and hardness, uses of such compositions, and processes for preparing them are disclosed.

Modified solution polymers for coatings, films, mastics, caulks, and

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Lower Gwynedd, PA, United States of America

Shang-Jaw Chiou