Basf Corporation

Gregg S Kuyzin

John Robert Stoll

Leslie E Schmidtke

The invention relates to low density cellular, rigid polyurethanes which employ the dimethyl esters of adipic, glutaric and succinic acids and mixtures thereof in conjunction with nonylphenol as cell-opening agents. The use of this ester phenol mixture obviates the need of other surfactants, particularly silicone surfactants which reduce the adhesion of the urethanes to fabrics in pour-behind-fabric applications.

Mixtures of dibasic acid esters and nonylphenol as cell openers in low

A high density structural reaction injection molded (SRIM) composite having a fabric comprised of nonwoven spunbonded fibers made of a polyester core sheathed in a polyamide skin, is embedded in a polyurethane matrix, providing a part having a blister free surface upon baking in a paint oven. A baked part having a near Class A or Class A surface finish can be attained by adding a show surface veil made of a soft nonwoven polyester fiber mat to the polyurethane matrix over the nonwoven spun bonded fabric. These parts have structural applications which require high strength and good surface finishes, such as in automotive exterior panels.

High density structural reaction injection molded composite containing a

Low and high density structural RIM compositions are disclosed which have low viscosities. These compositions contain a resin 'B-side' component which comprises a hydroxyl-functional tertiary amine polyol.

Polyurethane-polyisocyanurate structural rim systems with enhanced

The invention relates to low density cellular, rigid polyurethanes which employ the dimethyl esters of adipic, glutaric and succinic acids and mixtures thereof as cell opening agents. The use of these esters obviates the need for the use of other surfactants particularly, silicone surfactants which reduce the adhesion of the urethanes to fabrics in pour-behind-fabric applications.

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Ypsilanti, MI, United States of America

Gregg S Kuyzin