Georgia-pacific Chemicals LLC

Richard M Rammon

Bobby Lee Williamson

Cornel Hagiopol

Robert A Breyer

Pablo G Dopico

Jason Rivers

Clinton L Mills

The present invention relates to a non-thermosetting composition made by reacting epichlorohydrin and a primary amine, to the use of that composition for making thermosetting (curable) adhesives suitable for bonding composites, to a method of preparing composites using the thermosetting (curable) adhesives, and to the related composites bonded with the thermosetting (curable) adhesives.

Adhesive compositions for bonding composites

Methods for making and using amino-aldehyde resins. The method for making an amino-aldehyde resin can include mixing an intermediate amino-aldehyde reaction product having a total aldehyde compound to total amino compound molar ratio ranging from about 1.4:1 to about 3:1 with a first aldehyde compound and a first amino compound to produce an amino-aldehyde resin having a total aldehyde compound to total amino compound molar ratio ranging from about 0.5:1 to about 1.2:1. The concentration of the first aldehyde compound mixed with the intermediate reaction product can be about 1.9 wt % or more based on a combined solids weight of the aldehyde compounds and the amino compounds in the amino-aldehyde resin.

Methods for making and using amino-aldehyde resins

Thermosetting adhesives for use in e.g., particleboard or fiberboard, wherein the adhesives comprise a resin having azetidinium functional groups, can provide fast tack-building and curing, as well as ultimately excellent bonding characteristics. Preferably, the azetidinium-functional resin is formed from the reaction product of a polyamidoamine and epichlorohydrin.

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Stockbridge, GA, United States of America

Richard M Rammon