National Starch and Chemical Investment Holding Corporation

Dennis Neigel

Carmine P Iovine

John C Leighton

Charles Willard Paul

Martin M Tessler

Robert L Billmers

Paul A Altieri

David C Rawlins

Lawrence J Scotchie

Gregory A Sweeey

A process for preparing biodegradable, high humidity resistant crosslinked starch esters comprising reacting starch with monocarboxylic acid anhydride in a caustic catalyzed system to a DS of about 1.3 to 2.7 and crosslinking the starch ester in the same reaction mixture with polyfunctional acid and/or anhydride.

Method of preparing crosslinked starch esters

A method of preparing a hot melt adhesive composition comprising a starch ester having a DS (degree of substitution) of 0.3 to 3.0 and a selected non-volatile, organic diluent wherein the starch ester is a wetcake having 40% or more by weight of moisture.

Process for production of starch based hot melt adhesives

A formaldehyde-free latent crosslinking monomer represented by the formula ##STR1## in which R.sup.1 and R.sup.2 are C.sub.1 -C.sub.3 alkyl; R.sup.3 is hydrogen, C.sub.1 -C.sub.3 alkyl, or R.sup.4 --C(O)--; and R.sup.4 is C.sub.1 -C.sub.3 alkyl or C.sub.6 -C.sub.8 aryl, contains an allyl group capable of undergoing addition copolymerization and a dialkoxy ethyl group capable of crosslinking under acidic conditions. The monomer can be copolymerized with comonomers to form emulsion polymers for use as formaldehyde-free binders in nonwoven textiles. Methods for the preparation of the monomer, the polymers, and the nonwoven fabrics are described.

N-allyl-N-dialkoxyethyl amide or amine emulsion binders for nonwoven

N-allyl-N-dialkoxyethyl amide or amine monomers

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Salisbury, NC, United States of America

Dennis Neigel