Rohm and Haas Company

Raymond Gerard Hamilton

Morris C Wills

Joseph Robert Adamo

Jennifer Lynn Petoff

Mark T McCarty

Carlos Alfonso Cruz

Chuen-Shyong Chou

Susan M Liwak

Kirk Harold Moyer

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

Multimodal polymer particles and uses thereof

The invention provides a composition which increases the impact strength and lowers the viscosity of melt processed plastics resins. In particular the invention relates to an impact modifier composition comprising at least one impact modifier and at least one mineral oil and optionally up to 50% by weight of at least one plastics resin. Methods of making such impact modifier compositions are disclosed, together with a general process for combining at least one oil with at least one impact modifier during the impact modifier manufacturing process.

Impact modifier compositions which enhance the impact strength properties and lower the viscosity of melt processed plastics resins and methods of making said compositions

A blend of a polyolefin, such as polypropylene, with a segmented copolymer containing both polyolefin segments and segments derived from greater than 20 to about 100% of a vinyl aromatic monomer is useful in applications where high melt strength is desired.

Polyolefin/segmented copolymer blend and process

A segmented ionomeric copolymer when blended with a polyolefin improves sag resistance.

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Washington Crossing, PA, United States of America

Raymond Gerard Hamilton