Catalyst systems useful for forming isocyanurate, amide and/or oxazolidinone groups and a method for their use
AssigneeThe Dow Chemical Company
InventorShenghong A. Dai
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AssigneeThe Dow Chemical Company
InventorShenghong A. Dai
Estimating the term…
Two component catalyst systems containing (1) a N,N',N"-tris(N,N-dialkylaminoalkyl)-s-triazine component, and (2) a monocarboxylic acid component wherein the monocarboxylic acid component is one or more monocarboxylic acids having 4 to about 18 carbons are useful for polymerizing di- or poly-isocyanates, and, optionally, epoxies. The catalyst systems can often be particularly useful for preparing polymer foams which have good heat resistivity and dimensional stability properties compared to conventionally formed foams. The ratio of the two components of the catalyst system, along with the amount of the catalyst system used to prepare a polymer formulation, can be adjusted such that the monocarboxylic acid component can react with isocyanate group containing compounds in the foam formulations to provide carbon dioxide to function as a sole blowing agent, or as a partial blowing agent used in conjunction with other conventional blowing agents.
A catalyst system comprising:
A method of preparing polymers comprising reacting a di- or poly-isocyanate, or mixtures thereof, in the presence of an effective amount of a mixture containing:
Dependencies are inferred from the claim text.