| abstract |
Delayed action catalyst systems, primarily for the production of polyurethane, with improved shelf life and greater process control potential include: (i) a compound of formula: (FORMULA) or: Q and Q ', which may be the same or different, each represents a C1 to C10 alkylene, a C2 to C10 alkenylene or an arylene group; R1, R2, R3 and R4, which may be the same or different, each represents a substituted or unsubstituted alkyl group; and x is 0 or an integer less than 6; and (ii) an amine. |