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Polymeric triarylmethane dyes

  • US 4,477,635 A
  • Filed: 01/04/1982
  • Issued: 10/16/1984
  • Est. Priority Date: 01/04/1982
  • Status: Expired due to Fees
First Claim
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1. A polymeric aminotriarylmethane dye having a polyester, polycarbonate, polyethyleneimine or polyurethane backbone, said dye comprising repeating units selected from the group consisting of ##STR37## wherein R, R2, R3, R4, R5, X, a, and b are as defined below, and said dye having at least one arylamino unit of the general formula:

  • ##STR38## wherein a and b are independently zero or an integer of 1 to 3;

    X is oxygen or sulfur;

    Y is oxygen or --NH--;

    R is a divalent organic group selected from (1) aliphatic groups having 2 to 12 carbon atoms and up to 2 non-contiguous catenary groups selected from --O--, --S--, and --NR1 --, in which R1 is a lower alkyl group having one to four carbon atoms, (2) cycloaliphatic groups having 5 12 carbon atoms, and (3) arylene groups having 6 to 12 carbon atoms;

    c, d, and e are independently zero or one, with the provisos that when e is zero, then a is zero, and when c is zero or Y is oxygen, then X is oxygen;

    R2, R3, R4, and R5 are independently hydrogen, and auxochromic group, a bathochromic group or R2 and R3 or R4 and R5 together are a benzo group;

    Ar1 and Ar2 are independently aromatic groups having one or two 5- or 6-atom rings with conjugated unsaturation, the 5-atom rings having four carbon atoms and one of oxygen, sulfur, or nitrogen or three carbon atoms, one nitrogen, and one of oxygen or sulfur in the 1,3-position or nitrogen in the 1,2- or 1,3-position, the 6-atom rings having six carbon atoms or five carbon atoms and one nitrogen, or four carbon atoms and two nitrogens in the 1,2-1,3-, or 1,4-position or three carbon atoms and three nitrogens in the 1,3,5-position; and

    W is a divalent group selected from the group consisting of a coordinate bond, --O--, --S--, ##STR39## hydrogen or lower alkyl group having one to four atoms and R7 and R8 are independently hydrogen or a lower alkyl group having one to four carbon atoms;

    f is zero or one; and

    Z⊖

    is an anion.

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