Cabot Corporation

Rohm and Haas Company

Wayne Devonport

Robert S Whitehouse

Eric Gustave Lundquist

Hairuo Tu

Thimma R Rawalpally

Russell L Warley

James A Belmont

Ralph Craig Even

Andrew T Daly

Antony Keith Van Dyk

Robert Mitchell Blankenship

Dennis Paul Lorah

Meng-Jiao Wang

Alvin Michael Maurice

Robert H Gore

Khaled Mahmud

David Richard Amick

Yakov E Kutsovsky

Ann Robertson Hermes

Ethan S Simon

Collin P Galloway

Casmir S Ilenda

Joseph M Hoefler

Catherine Ann Finegan

Michael Louis Spera

Rosemarie Palmer Lauer

Paul Francis Reeve

Susan Jane Fitzwater

Gregory Mehos

Joseph David Tanzer

Antony Keith VanDyk

Jenifer Lyn Machleder, Legal Representative

Eric Michael Machleder, Legal Representative

James R Lesniak

Anne Denise Koller

According to the present invention, aqueous multi-stage polymer dispersions comprising an acid-functional first polymer and an epoxy-functional second polymer, wherein 90 mole % or more of the said epoxy groups, based on the moles of epoxy groups in the monomer mixture used to form the second polymer, are retained in the aqueous dispersion after said dispersion is stored in a sealed container for 10 days at 60&#xb0; C. Further, methods of making the aqueous multistage polymer dispersion comprise polymerizing the monomers used to make the second polymer in the presence of an aqueous dispersion of the first polymer. Preferably, the second polymer is formed in the presence of 0.3 wt. % or less, based on the total weight of the first polymer and the ingredients to form the second polymer, of one or more strong acid surfactant, and 3) 0.1 wt. % or less, based on the total weight of the first polymer and the ingredients to form the second polymer, of one or more initiator that contains strong acid groups or generates strong acid groups under the conditions of aqueous emulsion polymerization. The aqueous dispersions provide non-toxic, odor free storage stable coating compositions that form coatings having excellent film toughness and hardness.

Aqueous dispersion of epoxy groups-bearing multi-stage polymeric particles

A process for preparing crosslinked polymer particles at high solids levels (i.e., &#x3e;40 wt %). Also provided is a method for predicting whether a selection of reaction conditions for preparing crosslinked polymer particles will exhibit a potential for forming a gel and a method for predicting whether a selection of reaction conditions will or will not result in the formation of a gel.

High solids preparation of crosslinked polymer particles

A modified particle or aggregate is disclosed wherein a particle has an attached group having the formula: wherein the substituents are defined in the disclosure. Modified particles with attached polymers are also disclosed as well as methods of making the modified products.

Particle having an attached halide group and methods of making the same

A method for imparting damage resistance to a coating, film or article of manufacture comprising adding crosslinked polymeric nanoparticles having a size range of 1-100 nm in diameter to said coating, film or article of manufacture.

Damage resistant coatings, films and articles of manufacture containing crosslinked nanoparticles

An aqueous polymeric composition containing select polymeric nanoparticles is provided. The select polymeric nanoparticles contain as polymerized units at least one multiethylenically unsaturated monomer and at least one water soluble monomer; and have a mean diameter in the range of from 1 to 50 nanometers. Also provided are aqueous polymeric compositions that further contain second particles such as pigment particles or second polymer particles. The aqueous polymeric composition is useful for preparing coatings having at least one improved property compared to a coating absent the select polymeric nanoparticles. Further, the aqueous polymeric composition is useful for treating wood. A coating prepared from the aqueous polymeric composition is also provided.

Aqueous polymeric composition containing polymeric nanoparticles and treatments prepared therefrom

An aqueous composition including an aqueous dispersion of polymeric nanoparticles having a mean diameter of from 1 to 50 nanometers, the particles including, as polymerized units, at least one multi-ethylenically-unsaturated monomer and at least one ethylenically unsaturated water soluble monomer is discloseded. Certain embodiments of the composition include pigment particles and other polymer particles. The aqueous compositions include aqueous coating compositions.

Aqueous composition containing polymeric nanoparticles

The present invention relates to an emulsion free high solids process for preparing crosslinked polymeric nanoparticles of 1-200 nm in diameter.

High solids process for preparing polymeric nanoparticles

A method of attaching one or more organic groups onto a particle is described which involves reacting at least one radical with at least one particle wherein the radical is generated from the interaction of at least one transition metal compound with at least one organo-halide compound in the presence of one or more particles capable of radical capture. Variations of this method are also described.

Method for attachment of one or more organic groups onto a particle

Methods of making a particle having an attached stable free radical

A variety of methods to prepare a polymer composition containing at least one polymer and at least one modified pigment are described. The methods, in part, involve introducing a slurry containing at least one modified pigment into an emulsion or solution polymer prior to dewatering. Other polymer systems can be used including aqueous based polymerizations and solvent-based polymerizations, which can include free radical polymerizations. Other methods involve the formation of a modified pigment in the presence of an emulsion or solution polymer and then recovering the polymer composition containing the modified pigment. Compositions containing at least one modified pigment and the emulsion or solution polymer are also described as well as uses for the polymer compositions of the present invention.

Polymers containing modified pigments and methods of preparing the same

Various modified particles are described which can be used in polymerizations to attach one or more polymers onto modified particles. Also described are the resulting modified particles having attached monomer or polymer groups as well as methods of preparing such modified particles. The polymer groups on the modified particles can be terminated and these various modified particles with attached groups can be used in a variety of end uses.

Polymerized modified particles and methods of making the same

Particles having an attached stable free radical, polymerized modified particles, and methods of making the same

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Tewksbury, MA, United States of America

Wayne Devonport