Rohm and Haas Company

Dow Global Technolgoies LLC

Robert J Olsen

Jose Antonio Trejo-O'Reilly

Leonard Edward Bogan, Jr

Alfred Karl Schultz

William I Harris

Daryl John Gisch

Michael C Becker

Takashi Masudo

Jose Antonio Trejo

Garth Rockwood Parker, Jr

James Franklin Tate, Jr

Gregory C Pierce

Dennis A Keeley

Garth R Parker

Klaus-Dieter Topp

Karen A Graziano

Susan E Anderson

Marvin K Tegen

James F Tate, Jr

This invention relates to no-salt and mixed salt suspension polymerization processes for water-soluble monomers and resins and relates to catalysts produced from the same.

Mixed salt suspension polymerization process and resins and catalysts produced thereof

A catalyst prepared by polymerizing 0-98 weight % butylstyrene; 0-80 weight % vinyl toluene; 1.5-25 weight % divinyl benzene having 1-98 weight % of ethyl vinyl benzene; and 0-80 weight % styrene. Copolymer beads are made, sulfonated, and used as a catalyst.

Strong acid catalyst composition

The present invention relates to the use of an antioxidant treated promoted strong acid ion exchange resin as an acid catalyst.

Use of a treated, promoted ion exchange resin catalyst

A continuous process and system for preparing branched aldehydes by reacting aldehyde with an acid polymeric catalyst absent any metal from Group VIII to produce a product having about 10 to 99.99% by weight branched unsaturated aldehyde and at least 92% selectivity of reaction to the branched aldehyde and recycling a portion of the product.

Catalyst and process to produce branched unsaturated aldehydes

Photoresists are disclosed that display increased sensitivity, measured as lithographic potential, when compared to known photoresists that contain melamine resin as a crosslinker. The melamine resin in these photoresists contains a higher percent by weight of monomeric hexamethoxymethylmelamine than in known resists.

Acid-hardening photoresists comprising a purified hexamethoxy

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Lansdale, PA, United States of America

Robert J Olsen