Two-component polyurethane composition

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United States of America Patent

PATENT NO 12018169
APP PUB NO 20210340402A1
SERIAL NO

17282570

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Abstract

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A multi-component composition contains a) a polyol component having a1) acrylate polyol and a2) at least one of polyester polyol and polyether polyol, wherein the equivalent ratio of hydroxyl groups of acrylate polyol to hydroxyl groups of the at least one of polyester polyol and polyether polyol is in the range of 0.4 to 3.8, and b) an isocyanate component containing b1) aliphatic polyisocyanate monomer, dimer and/or trimer, and b2) aliphatic polyisocyanate prepolymer, wherein the equivalent ratio of isocyanate groups of aliphatic polyisocyanate monomer, dimer and/or trimer to isocyanate groups of aliphatic polyisocyanate prepolymer is in the range of 0.5 to 2.6. The multi-component composition is suitable for use as a top coat on elastic membranes, in particular roofing membranes, to provide sufficient weathering resistance/protection.

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Patent Owner(s)

Patent OwnerAddress
SIKA TECHNOLOGY AGZUGERSTRASSE 50 BAAR 6340

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Byrne, Mike Lytham, GB 3 11
Coward, Alexander Sale, GB 10 35
Gatrell, Mark Preston, GB 10 35
Glover, Stephen Chorley, GB 10 91

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