Abstract:
The invention pertains to novel oligofunctional photoinitiators of the formula (1) or (1A). R 1 and R 2 are methyl or together are -(CH 2 ) 5 -; and n is 2 or 3, and the solvent in (1A) is water or an organic solvent; and their use in photopolymerizable compositions, in particular inks.
Abstract:
The invention pertains to photolatent amidine bases for redox curing of radically curable formulations, that is a composition comprising (a1) a photolatent amidine base; or (a2) a photolatent amine base; or (a3) a mixture of (a1) and (a2); and (b) a radically polymerizable compound; and (c) a free radical initiator capable to be reduced by amines and/or amidines, in particular a peroxide.
Abstract:
The present invention pertains to a composition comprising (a) a photolatent base; (b) a blocked isocyanate or blocked isothiocyanate and (c) a hydrogen donor compound; and its applications.
Abstract:
The present application provides a uv dose indicator film and ink showing a color change depending on the absorbed radiation-dose, comprising (a) a selected acid responsive colorant; (b) a sulfonyloxime ester compound or a -N-O-sulfonyl compound as photolatent acid and (c ) a UV-absorber.
Abstract:
The present invention relates to a method for producing a duplicated shim and the duplicated shim obtainable by the method. The duplicated (UV-cured) shim, independent of any carrying device (like a cylinder or belt), can be applied directly to the surface of the transfer roller (and impart the surface OVD structure into a clear lacquer) in a similar way to conventional nickel shims.
Abstract:
The present application provides a uv dose indicator film and ink showing a color change depending on the absorbed radiation-dose, comprising (a) a selected acid responsive colorant; (b) a sulfonyloxime ester compound or a -N-O-sulfonyl compound as photolatent acid.
Abstract:
The invention pertains to photolatent amidine bases for redox curing of radically curable formulations, that is a composition comprising (a1) a photolatent amidine base; or (a2) a photolatent amine base; or (a3) a mixture of (a1) and (a2); and (b) a radically polymerizable compound; and (c) a free radical initiator capable to be reduced by amines and/or amidines, in particular a peroxide.
Abstract:
The present invention provides organometallic latent catalyst compounds, which aresuitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, in particular for the crosslinking of a blocked or unblocked isocyanate or isothiocyanate component with a polyol or polythiolto form a polyurethane (PU).
Abstract:
Compounds of the Formula (I), (II) and (III) wherein Aris for example phenylene, biphenyleneor naphthylene, all of which areunsubsti- tuted or substituted by C 1 -C 4 -alkyl, C 2 -C 4 -alkenyl, CN, OR 11 , SR 11 , CH 2OR 11 , COOR 12 , CONR 12 R 13 or halogen; R 1 , R 2 , R 7 and R 8 independently of one another other are hydrogen or C 1 -C 6 -alkyl;R 3 and R 5 together and R 4 and R 6 together form a C 2 -C 6 -alkylene bridge which is unsubstituted or substituted by one ore more C 1 -C 4 -alkyl; R 11 is hydrogen or C 1 -C 6 -alkyl; R 12 and R 13 independently of one another forexample are hydrogen, phenyl, C 1 -C 18 -alkyl, C 1 -C 18 -alkyl which is interrupted by one or more O; n is 1-10;X is O, S or NR 10 ; A and A 1 are suitable linking groups;are suitable as photolatent bases.