Butamax Advanced Biofuels LLC

Dupont Performance Elastomers LLC

Theresa M Dobel

Christopher John Bish

Phan Linh Tang

Adam J Schubert

John Gordon Bauerle

Dennis P Boyd

Don Germano

Robert S Grace

Phillip R Greene

Ken Kimura

Geoffrey Lulham

Ronald D Stevens

Phan L Tang

John G Bauerle

The present invention is related to hydrocarbon compositions comprising butanol that have substantially the same or improved performance properties than comparable hydrocarbon compositions comprising ethanol and to methods for identifying such compositions.

Multimedia evaluation of butanol-containing fuels

Compositions of fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, a first cure site selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene, and a second cure site selected from the group consisting of i) copolymerized units of a brominated cure site monomer, ii) copolymerized units of an iodinated cure site monomer, iii) copolymerized units of a chlorinated cure site monomer, iv) brominated endgroups, v) iodinated endgroups and vi) a combination of any of i)-v) are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance, and excellent adhesion to metal substrates. Optionally, the fluoroelastomers may be dual cured by both a polyhydroxy system and an organic peroxide system.

Curable base-resistant fluoroelastomers

Growing community of inventors

Akron, OH, United States of America

Theresa M Dobel