Control of cure rate of polyurethane resins

Details Control of cure rate of polyurethane resins Control of cure rate of polyurethane resins

C - Chemistry, Metallurgy

06

B

52/51

C06B 45/10 (2006.01) C08K 5/09 (2006.01) C08K 5/56 (2006.01)

Patent

CA 1117765

ABSTRACT OF THE DISCLOSURE Curing catalysts comprising a metallo organic compound of the formula MRm wherein M is an m-valent metal selected from bismuth, lead, tin, arsenic, zinc, copper, cadmium and potassium and R is phenyl, tolyl, benzyl, naphthyl, alkyl of 1 to 20 carbon atoms or cycloalkyl of 5 to 20 carbon atoms; and a carboxylic acid or a compound convertible to a carboxylic acid by reaction with Zerewitinoff active hydrogen, processes for their use and compositions containing them are disclosed. Such catalysts are used to control the curing rate profile of polyurethane resin systems which are used, for example, as propellant binders.

371647

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