Air Products and Chemicals, Inc.

Richard Derby

Bruce A Gruber

Bheema R Vijayendran

James D Nichols

Glenn T Von Dem Bussche

David A Hannum

A method for preparing an aqueous adhesive polyurethane/acrylic polymer dispersion by reacting a polyol, a carboxylic acid-containing polyol and a polyisocyanate to form an anionic, water dispersible prepolymer, subsequently chain extending to form the polyurethane component of the polyurethane/acrylic polymer and polymerizing at least one acrylic monomer in the presence of the prepolymer and/or polyurethane to form the acrylic polymer component, characterized by using isophorone diisocyanate as the polyisocyanate and performing the chain extension with a composition comprising a monofunctional amine and a difunctional amine in a 1:4 to 4:1 weight ratio.

Processes for producing organic solvent free urethane/acrylic polymer

A method for making an aqueous polyurethane-vinyl polymer dispersion which comprises:

Aqueous polyurethane-vinyl polymer dispersions for coating applications

A water-based adhesive composition comprising a polyvinyl alcohol stabilized vinyl chloride-ethylene copolymer latex and 5-50 wt %, based on copolymer, of a polyisocyanate material. The adhesive composition has improved pot life and is used to prepare wood composites demonstrating improved water resistance.

Aqueous vinyl chloride-ethylene copolymer/polyisocyanate adhesive

Metal corrosion by aqueous acid solutions is inhibited by admixture therein of a synergistic additive consisting essentially of:

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Allentown, PA, United States of America

Richard Derby