Hercules Corporation

Solenis Technologies, L.p.

Usda

Heartland Resource Technologies LLC

United States of America, As Represented by the Secretary of Agriculture

Solenis Technologies Cayman, L.p.

James M Wescott

Daniel F Varnell

Michael A Evans

Charles R Frihart

Michael J Birkeland

Disclosed is an adhesive composition comprising a protein component, an AE adduct component and an isocyanate component. Also disclosed is a composite and a method of making a composite comprising a substrate and the adhesive composition of the present invention.

Protein adhesive formulations with amine-epichlorohydrin and isocyanate additives

The present invention provides an improved method of producing a stable acid denatured soy/urea adhesive having improved wet and dry strengths, with more efficient production and lower production costs. The method comprises combining urea with soy flour that has been acid treated until denatured and substantially free from urease activity. The soy flour is preferably lowered to a pH of 2.0 to 4.0 for at least 1 minute. Optionally, the method may also include adding a crosslinking agent, diluent or both to the soy flour/urea adhesive and/or adding an emulsified or dispersed polymer. Adhesives and dispersions prepared according to the methods of this invention offer increased stability and strength properties.

Stable acid denatured soy/urea adhesives and methods of making same

Water-resistant, protein-based adhesive dispersion compositions and methods for preparing them are provided. The adhesive dispersions are prepared by copolymerizing a denatured vegetable protein, such as soy flour, that has been functionalized with methylol groups with one or more reactive comonomers, and preparing an acidic dispersion of the adhesive. The adhesive dispersions exhibit superior water resistance, and can be used to bond wood substrates, such as panels or laminate, or in the preparation of composite materials.

Water-resistant vegetable protein adhesive dispersion compositions

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Waunakee, WI, United States of America

James M Wescott