The Dow Chemical Company

Other

Mark A Snyder

Larry W Mobley

John L Nafziger

Tracy Margaret Davis

Michael Tsapatsis

J Alex Lee

In general, in one aspect, the invention features a method that includes preparing a mixture comprising water, a basic amino acid, and a metal oxide precursor under conditions which result in the formation of metal oxide nanoparticles from the metal oxide precursor.

Forming nanoparticles in basic amino acid sols

Flexible polyurethane foams having improved flame resistance and 'guide factor' are prepared by reacting a copolymer polyahl, isocyanate-terminated prepolymer containing a cotrimer of MDI and a blowing agent.

Flexible polyurethane foams prepared from cotrimers of alkylene-bridged

Trimerized isocyanates having improved solubility in polyisocyanates are prepared by reacting a polyisocyanate with a low equivalent weight polyol to form a first prepolymer, forming a cotrimer from said first prepolymer by reaction of same with diphenylmethane diisocyanate or polymeric derivatives thereof, and forming a second isocyanate terminated prepolymer by reacting said cotrimer with a second low equivalent weight polyol. The resulting cotrimer can be diluted in a polyisocyanate and used to prepare polymers, particularly polyurethane foams, having excellent properties.

Growing community of inventors

Angleton, TX, United States of America

Mark A Snyder