PHOTOLATENT CATALYSTS BASED ON ORGANOMETALLIC COMPOUNDS Russian patent published in 2013 - IPC C08G18/22 C01G19/00 C01G29/00 C01F7/00 C01G25/00 C01G23/00 C08G18/24 C09D175/04 C09J175/04 C08L75/04 C09D11/10 

FIELD: chemistry.

SUBSTANCE: invention relates to organometallic latent catalytic compounds which are suitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, particularly for cross-linking a blocked or non-blocked isocyanate or an isothiocyanate component with a polyol or a polythiol to form polyurethane. Polyaddition or polycondensation reactions are initiated by that a catalyst is released while holding in electromagnetic radiation in wavelength range of 200-800 nm. The latent catalytic compound has formula I or II, Me(FG)_(m-x)A_x (I); A_x(FG)_(m-1-x)Me-O-Me(FG)_(m-1-x)A_x (II), where Me is Sn, Bi, Al, Zr or Ti; m is an integer from 1 to the coordination number of Me; x is an integer from 0 to (m-1); A is a C₁-C₂₀ alkyl, halogen, C₇-C₃₀ aralkyl, C₁-C₂₀ alkoxy group, C₂-C₁₀ alkanoyloxy group, C₆-C₁₈ aryl or C₆-C₁₈ aryl, which is substituted with one or more C₁-C₂₀ alkyls; and under the condition that if x is greater than 1, A are identical or different; and FG independently represents a group of formula (Z), (B), (C), (D), (E), (F), (G), (L) or (M)

,

where values of radicals are given in the claim. The invention also relates to a polymerisable composition and a method for polymerisation in the presence of said catalytic compounds. The invention enables to initiate the reaction only if desired by external activation, such as heating or light.

EFFECT: widening the operating window with a polymer mixture until the chain reaction begins.

12 cl, 14 tbl, 67 ex