Leuco triphenylmethane colorants as bluing agents in laundry care compositions

Patent metadata

Field	Value
Publication number	US-11053461-B2
Application number	US-202016881115-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 4, 2015
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

This application describes laundry care compositions that contain leuco colorants and their use in the laundering of textile articles. These types of colorants are provided in a stable, substantially colorless state and then may be transformed to an intense colored state upon exposure to certain physical or chemical changes such as, for example, exposure to oxygen, ion addition, exposure to light, and the like. The laundry care compositions containing the leuco colorants are designed to enhance the apparent or visually perceived whiteness of, or to impart a desired hue to, textile articles washed or otherwise treated with the laundry care composition.

First claim

We claim:

1. A composition comprising: (a) at least one surfactant and (b) at least one compound represented by Formula (I) below:

Wherein:
X 1 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen;
X 2 ═NR 13 R 14 , wherein R 13 =hydrogen and R 14 =alkyl or R 13 =alkyl and R 14 =hydrogen;
X 3 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen; and
R 1 to R 12 groups are hydrogen.

2. The composition of claim 1 , wherein R y is a divalent substituent conforming to a structure selected from the group consisting of Formula (CA), (CB), and (CC):

wherein ff, gg, and hh are selected from the group consisting of zero and positive integers, and the sum of ff, gg, and hh is 2 or more.

3. A laundry care composition comprising: (a) at least one laundry care adjunct material and (b) at least one leuco dye, wherein the leuco dye forms color upon exposure to an oxidation reaction and has a standard redox potential of greater than zero volts at neutral pH.

4. A laundry care composition comprising: (a) at least one laundry care adjunct material and (b) at least one compound represented by Formula (I) below:

Wherein:
X 1 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen;
X 2 ═NR 13 R 14 , wherein R 13 =hydrogen and R 14 =alkyl or R 13 =alkyl and R 14 =hydrogen;
X 3 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen; and
R 1 to R 12 groups are hydrogen.

5. The laundry care composition of claim 4 , wherein R y is a divalent substituent conforming to a structure selected from the group consisting of Formula (CA), (CB), and

wherein ff, gg, and hh are selected from the group consisting of zero and positive integers, and the sum of ff, gg, and hh is 2 or more.

6. The laundry care composition of claim 4 , wherein the composition is a detergent composition.

7. The laundry care composition of claim 4 , wherein the composition is the form of a liquid.

8. The laundry care composition of claim 4 , wherein the composition is in the form of a liquid with a pH of greater than or equal to 10.

9. The laundry care composition of claim 4 , wherein the composition is in the form of a liquid with a pH of less than 10.

10. The laundry care composition of claim 4 , wherein the composition is in the form of a solid.

11. A method for treating a textile substrate, the method comprising the steps of:
(a) providing the laundry care composition of claim 4 ;
(b) adding the laundry care composition to a liquid medium; and
(c) placing the textile substrate in the liquid medium.

12. The method of claim 11 , wherein the method is performed under conditions sufficient to convert the compound conforming of Formula (I) to its oxidized color form.

13. A polymeric leuco colorant represented by Formula (I) below:

Wherein:
X 1 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen;
X 2 ═NR 13 R 14 , wherein R 13 =hydrogen and R 14 =alkyl or R 13 =alkyl and R 14 =hydrogen;
X 3 ═NR 13 R 14 , R 13 =alkyl, R 14 ═R a , R a ═R x —O—R y —R z , R x =alkanediyl, R y is a divalent substituent comprising two or more divalent repeating units independently selected from repeating units conforming to the structure of Formula (C):

R 101 =hydrogen, R 102 =hydrogen, R z =hydrogen; and
R 1 to R 12 groups are hydrogen.

14. A composition comprising the polymeric leuco colorant of claim 13 .

15. A laundry care composition comprising the polymeric leuco colorant of claim 13 .

16. A detergent composition comprising the polymeric leuco colorant of claim 13 .

17. The colorant of claim 13 , wherein R y is a divalent substituent conforming to a structure selected from the group consisting of Formula (CA), (CB), and (CC)

wherein ff, gg, and hh are selected from the group consisting of zero and positive integers, and the sum of ff, gg, and hh is 2 or more.

18. The colorant of claim 17 , wherein the sum of ff, gg, and hh is from 2 to 40.

19. The colorant of claim 17 , wherein the sum of ff, gg, and hh is from 2 to 20.

Assignees

• Milliken & Co

Inventors

• Qin Haihu
• Butterfield Benjamin R
• Balasca Diana C
• Hong Xiaoyong
• Dey Sanjeev K
• Valenti Dominick J

Classifications

• C09B11/10

  Amino derivatives of triarylmethanes · CPC title

• C11D3/42 Primary

  Brightening agents {; Blueing agents} · CPC title

• C09B69/103

  containing a diaryl- or triarylmethane dye · CPC title

• C09B11/06

  Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus {and their ethers or esters} · CPC title

• C09B11/12

  without any OH group bound to an aryl nucleus · CPC title