Coating materials stabilised against the action of light

Details Coating materials stabilised against the action of light Coating materials stabilised against the action of light

C - Chemistry, Metallurgy

07

D

400/4003, 400/50

C07D 249/20 (2006.01) C07D 401/00 (2006.01) C07D 403/14 (2006.01) C08K 5/00 (2006.01) C08K 5/34 (2006.01) C08K 5/3475 (2006.01) C09D 7/12 (2006.01)

Patent

CA 1263955

Case 3-15131/1-3 Coating materials stabilised against the action of light Abstract Blocked benzotriazoles of the formula I or II Image I Image II wherein x is 1 or 2, R1 in the case of x=1 and in the formula II is an acyl group of the formula -CO-R5, a sulfonyl group of the formula -SO2-R6, a phosphoryl group of the formula -P(O)r(R14)(R15), and in the case of x=2 is -CO- or a diacyl group of the formula -CO-CO- or -CO-R7-CO-, and R2, R3, R4, R5, R6, R7, R14 and R15 have the meanings defined in claim 1, are crypto light stabilisers which can be activated by short-wave irradiation. Their use in coating materials is of interest in cases in which light stabilisers containing the free OH compounds have disadvantages with regard to their application.

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