Cationic 1-cyano-p-(n-benzyl-n-ethylamino) cinnamoyl dyes

Details Cationic 1-cyano-p-(n-benzyl-n-ethylamino) cinnamoyl dyes Cationic 1-cyano-p-(n-benzyl-n-ethylamino) cinnamoyl dyes

C - Chemistry, Metallurgy

09

B

260/290.1, 260/3

C09B 23/16 (2006.01) C09B 23/14 (2006.01) C09B 69/00 (2006.01)

Patent

CA 1132556

ABSTRACT OF THE DISCLOSURE Cationic yellow methine dyes represented by the structure: Image where R1 is alkyl or cyanoalkyl, said alkyl being of 1-4 carbons; R2 is H, Cl, Br or NO2; R3 is H or CH3; and n is 2 or 3; Q is N(CH3)3, Image , Image or Image where R4 is alkyl of 1-4 carbons, benzyl, monochlorobenzyl or monobromobenzyl; and A is an anion The dyes are particularly useful in the dyeing of unbleached paper pulp and have excellent substantivity and desired fastness properties.

348550

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