Dow Global Technolgoies LLC

Blue Cube IP LLC

Gary A Hunter

Marvin L Dettloff

Ha Q Pham

Maurice J Marks

George C Jacob

Gary Lee Jialanella

Syed Zafar Mahdi

Gyongyi Gulyas

Rajesh H Turakhia

Bernd Hoevel

Huifeng Qian

Susan K Falcone-Potts

Martine Rousse

Bradley D Suerer

Rajesh Turakhia

Two component polyurethane adhesives contain (a) at least one alkyl-substituted 4,4'-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted in at least one position ortho to the amino group, (b) at least one 2,4&#x2032;-di(aminocyclohexyl)alkane or 2,2&#x2032;-di(aminocyclohexyl)alkane, (c) a mixture of (ii) at least one alkyl-substituted 4,4&#x2032;-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted and (ii) at least one 2,4&#x2032;-di(aminocyclohexyl)alkane and/or 2,2&#x2032;-di(aminocyclohexyl)alkane, or (d) a mixture of 40 to 99.9% by weight (a), (b) or (c) with 0.1 to 60% by weight of at least one unsubstituted 4,4&#x2032;-di(aminocyclohexyl)alkane, The adhesives also contain one or more polyols, in which at least 50% of the hydroxyl groups are secondary hydroxyls. These adhesive provide a useful combination of long open time and excellent sag resistance.

Polyurethane adhesives containing alkyl-substituted 4,4'-di(aminocyclohexyl)alkanes, 2,4&#x2032;-di(aminocyclohexyl)alkanes and/or 2,2&#x2032;-di(aminocyclohexyl)amines

A resin formulation for use in a vacuum resin infusion molding process, said formulation comprising (a) a divinylarene dioxide, and (b) a polyaminoether; wherein the polyaminoether does not have pendent hydroxyl groups; and wherein the resin formulation may have a low viscosity of less than about 400 mPa-s.

Divinylarene dioxide formulations for vacuum resin infusion molding

A curable epoxy resin composite composition including a reinforcing material and an epoxy resin composition, and a process for preparing a composite from such composition; wherein a combination of at least one alkanolamine and at least one styrenated phenol are present in the epoxy resin composition in a sufficient amount to increase the rate of reaction of the at least one epoxy resin and the at least one alkanolamine curing agent while maintaining the thermal and mechanical properties of the composite upon curing of the epoxy resin composition.

Curable epoxy resin compositions and composites made therefrom

A windmill blade which comprises reinforcing fibers in a toughened resin matrix. The resin matrix is made from a composition which comprises (a) one or more epoxy resins and/or one or more epoxy vinyl ester resins, (b) one or more reactive diluents, and (c) at least one amphiphilic block copolymer. The amphiphilic block copolymer comprises at least two different polyether blocks and is present in the composition in an amount of from about 0.5% to about 10% by volume, based on the total volume of the matrix composition.

Windmill propeller blade and method of making same

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Lake Jackson, TX, United States of America

Gary A Hunter