Volatile organic compound (voc) compliant sealing material

Details Volatile organic compound (voc) compliant sealing material Volatile organic compound (voc) compliant sealing material

2011-06-07

2011-06-07

Eashoo, Mark (Department: 1767)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

active

07956122

ABSTRACT:
A polyurethane sealant is provided that includes a fatty acid ester that is used to replace volatile solvent in the sealant formulation and a reaction product of polyoxyalkylene polyol and polyisocyanate. The polyurethane sealant produced has a non-volatile materials content of at least 96%. In addition to reducing the volatile organic compounds (voc) content and maintaining the attributes of a sealant, the use of fatty acid esters provides the sealant with superior material extrusion, improved gunning and tooling, and improved package stability. Also provided is a method for making a polyurethane sealant where the polyisocyanate component the polyol component are combined to form a reaction product, and the reaction product is combined with the fatty acid ester component, wherein the polyurethane sealant has a non-volatile materials content of at least 96%.

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