Rohm and Haas Company

Joseph Robert Adamo

Morris C Wills

Fanwen Zeng

Chuen-Shyong Chou

Jennifer Lynn Petoff

Raymond Gerard Hamilton

Leon D Ranalli

Karen Casey

Gloria M Lipovsky

Robert Hecker, Jr

Eric Gustave Lundquist

Hailan Guo

Charles Elwood Jones

Veera Nelliappan

Ching-Jen Chang

Kirk Harold Moyer

Stephane Pierre Jean Ugazio

Morris Christopher Wills

Veera D Nelliappan

Stephane Pierre Ugazio

A polymeric powder composition prepared from an emulsion blend comprising from 95 to less than 100 percent by weight latex based substrate polymer, wherein the latex based substrate polymer comprises units derived from one or more monomers selected from the group consisting of alkyl (meth)acrylates, functionalized alkyl(meth)acrylates styrene, acrylonitrile, butadiene, chloroprene, vinyl chloride, (meth)acrylates, vinyl acetate, and combinations of two or more thereof and wherein the latex based substrate polymer has a Tg equal to or greater than 60&#xb0; C. and an average particle size between 100 nm and 10 &#x3bc;m; and from greater than 0 to 5 percent by weight binder latex polymer, wherein the binder has a Tg of equal to or less than 10&#xb0; C. and has units derived from one or more (meth)acrylic monomers, and wherein the binder polymer has an average particle size from 50 to 250 nm is provided.

Polymeric powder composition and a method of producing same

The present invention relates to a process for preparing dry polymer granules having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength (Kst) coupled with reduced dusting levels by drying a mixture including one or more emulsion polymers and one or more surfactants having HLB values between 10 and 25.

Process for manufacturing polymers

A multimodal polymer particle composition containing two or more populations of polymer particles having a total rubbery weight fraction of less than 90 weight percent is provided. Also disclosed is a process for preparing multimodal polymer particle compositions that can be dried to a powder. Multimodal polymer particle dispersions are disclosed for preparing impact modifiers that can be dried to a powder. Also provided are polymeric compositions having a matrix resin component and impact modifiers prepared from multimodal polymer particles.

Processes for preparing multimodal polymer particle compositions

Processes for preparing a powdery high rubber impact modifier containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Also provided are various methods of preparing aqueous polymer particle dispersions having two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent. These dispersions are spray-driable into a powder and are useful for increasing the impact strength of various matrix resins.

Processes for preparing impact modifier powders

Multimodal polymer particles and uses thereof

A powdery high rubber impact modifier composition containing two or more populations of polymer particles having a total rubbery weight fraction of greater than 90 weight percent is provided. Aqueous polymer particle dispersions for preparing these high rubber impact modifiers which can be spray dried to a powder are also provided. Also provided are polymeric compositions having a matrix resin component and the powdery high-rubber impact modifiers.

High rubber impact modifier powders

A method is disclosed for preparing a homogeneous solution of a powder, particularly hard-to-wet polymer powders, which includes:

Continuous solution method

A method is disclosed for preparing a homogeneous solution of a powder, Particularly hard-to-wet polymer powders, which includes:

Continuous solution method and apparatus

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Souderton, PA, United States of America

Joseph Robert Adamo