C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/10 (2006.01) C08G 18/32 (2006.01) C08G 18/72 (2006.01) C08K 5/10 (2006.01) C08L 75/04 (2006.01) C08L 75/08 (2006.01)
Patent
CA 2474115
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 to form a reaction product; wherein the polyurethane sealant has a non-volatile materials content of at least 96%.
Construction Research & Technology Gmbh
Gowling Lafleur Henderson Llp
LandOfFree
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