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US 6,641,620 B1Granted
Disperse dye mixtures
AssigneeBASF SE
InventorsAlan Thomas Leaver, David Brierley, James Franklin Bullock
Life of this patent
Estimating the term…
Abstract
A dye mixture comprises: a) at least one pyrroline type dye of formula (I) wherein R1 is H, C1-20alkyl or C2-20alkenyl; and D is aryl; and b) at least one anthraquinone type dye of formula (II), wherein RB is (CH2)nORB1; RB1 is C1-6alkyl or C1-6alkoxy-C1-6alkyl; n is 1-6; and ZB is O or NH.
Claims7
A dye mixture comprising
- (A) (1) a pyrroline type dye of the formula (I)
- wherein
- R1 is H;
- and
- D is a group of the formula (a)
- wherein R2 is C4H9 and R3 is 1-methyl-n-hexyl, or (2) a mixture thereof with up to 10% by weight of a pyrroline-type dye of the formula (I) wherein R1 is H and each of R2 and R3 is C4H9;
- and
- (B) one, two or three anthraquinone type dyes selected from the group of (B1) and (B2), each of the formula (II)
- wherein
- RB is (CH2)nORB1;
- n is 1, 2 or 3;
- and
- ZB is O;
- in which dye (B1), RB1 is methyl or ethyl, and
- in which dye (B2), RB1 is methoxyethyl, ethoxyethyl, methoxymethyl, or ethoxymethyl, and
- wherein the weight ratio of component (A):component (B) is 10:90 to 30:70.
13 more elements
Dependencies are inferred from the claim text.