C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 133/00 (2006.01) C08F 4/02 (2006.01) C08J 3/24 (2006.01) C08J 9/16 (2006.01) C08K 5/00 (2006.01) C08K 9/10 (2006.01) C08L 33/00 (2006.01) C09D 133/00 (2006.01) C09J 5/06 (2006.01)
Patent
CA 2573695
Encapsulated base catalysts in the presence of Michael donors and acceptors result in compositions useful as adhesives, sealants, coatings, elastomers, films, and foams by providing unprecedented control over pot-life and cure rate in a two-part or multi-component system and allowing for use as a one-part composition. Encapsulated catalysts prevent premature reaction of the various reactants during storage and processing and yet, upon the rupture of the capsules by a pre-determined event such as the application of heat, pressure, or solvation, produce rapid cure. Use of encapsulated catalysts gives unprecedented control over pot-life and cure rate over compositions previously contemplated. As such the use of encapsulated catalysts also results in the potential for one-part Michael addition compositions previously not known. The use of encapsulated catalysts also allows for faster green strength development by providing for a very rapid cure upon rupture of the capsules.
Brinkman Larry Frank
Kauffman Thomas Frederick
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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