Photocurable paint composition for road markings

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 4/00 (2006.01) C09D 4/06 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2253054

A photocurable paint composition for road markings is disclosed, comprising (A) a compound having an ethylenically unsaturated group, (B) a filler, (C) a cationic dye represented by formula (1): D+ ~A1- (1) (wherein D+ represents a cation having an absorption maximum wavelength in the wavelength region of from 400 to 1,200 nm, and A1- represents an optional anion), (D) a quaternary organic borate-type sensitizer represented by formula (2): (see fig. I) (wherein R1, R2, R3 and R4 each independently represents an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a heterocyclic group or a halogen atom, and Z+ represents an optional cation) and (E) an ultraviolet radical polymerization initiator capable of generating a radical upon absorption of light at a wavelength of 400 nm or less, or additionally comprising (F) glass beads.

Divulgation concernant une composition de peinture photoréticulable, renfermant (A) un composé contenant un groupe de type insaturation éthylénique, (B) une charge (C), un colorant cationique représenté par la formule (1) D+ ~A1- (1) (où D+ représente un cation avec une longueur d'onde maximale d'absorption dans la région des longueurs d'onde de 400 à 1200 nm, et A1- représente un anion facultatif), (D) un sensibilisateur de type borate organique quaternaire, représenté par la formule (2) (voir fig. I) (où R1, R2, R3 et R4 représentent chacun indépendamment un groupe alkyle, aryle, aralkyle, alcényle, alcynyle, silyle, hétérocyclyle ou un atome d'halogène, et Z+ un cation facultatif), (E) un initiateur de polymérisation radicalaire en présence de rayonnement ultraviolet, les radicaux se formant par absorption de lumière à une longueur d'onde de 400 nm ou moins, et, en supplément (F) des billes de verre.

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