Rohm and Haas Company

Dow Global Technolgoies LLC

Kathleen A Auld

Ward Thomas Brown

Antony Keith Van Dyk

David Wayne Mosley

James Keith Bardman

Garo Khanarian

Michele Heffner

Kevin J Henderson

David Goodro Kelly

Anurima Singh

David M Conner

Lidaris San Miguel Rivera

Michael Rhodes

Michele Heffnew

David G Kelly

James K Bardman

The present invention relates to a composition comprising an amphoteric polymer having pendant acid groups, or salts thereof, and pendant mono- or dialkylamino ethylene oxide groups or alkylammonium ethylene oxide groups characterized by either of the following formulas: where R-Rand Xare as defined herein. The composition of the present invention improves hiding efficiency for coating compositions formulated using associative rheology modifiers, binders, and titanium dioxide.

Amphoteric polymer composition

A process for encapsulating TiOparticles by polymerizing sodium styrene sulfonate with a redox initiator system; then polymerizing a first monomer mixture comprising at least 60 wt % acrylic monomers; then polymerizing a second monomer mixture comprising at least 40 wt % vinyl ester monomers.

Method of making polymer encapsulated titanium dioxide particles

The present invention relates to a composition comprising an aqueous dispersion of xanthan gum and opacifying pigment particles such as TiOencapsulated with a vinyl ester polymer or a vinyl ester-acrylate copolymer, as well as a method for its preparation. The composition is useful in coatings formulations, especially paint formulations.

Binder thickened with xanthan gum

A curable phenoxyphenyl polysiloxane composition is disclosed. A cured phenoxyphenyl polysiloxane composition is further disclosed, along with a method of making that cured phenoxyphenyl polysiloxane composition from the curable phenoxyphenyl silicon composition. An encapsulated semiconductor device, and a method of making that encapsulated semiconductor device by coating a semiconductor element of a semiconductor device with cured phenoxyphenyl polysiloxane are further disclosed.

Phenoxyphenyl polysiloxane composition and method for making and using same

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Collegeville, PA, United States of America

Kathleen A Auld