US 12,031,113 B2
Composition comprising hueing agent
Wesley A. Freund, Simpsonville, SC (US); Richard Lawson, Greer, SC (US); Sanjeev K. Dey, Spartanburg, SC (US); and Nolan Peevy, Roebuck, SC (US)
Assigned to Milliken & Company, Spartanburg, SC (US)
Filed by Milliken & Company, Spartanburg, SC (US)
Filed on Jan. 25, 2021, as Appl. No. 17/156,814.
Claims priority of provisional application 62/983,880, filed on Mar. 2, 2020.
Prior Publication US 2021/0277335 A1, Sep. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/42 (2006.01); C09B 29/36 (2006.01); C11D 3/34 (2006.01); C11D 11/00 (2006.01)
CPC C11D 3/42 (2013.01) [C09B 29/3682 (2013.01); C11D 3/349 (2013.01); C11D 2111/12 (2024.01)] 20 Claims
 
1. A laundry care composition comprising: (i) a laundry care ingredient; (ii) from 0.0001 wt % to 1.0 wt % of a polymeric thiophene hueing agent having the structure of Formula I:

OG Complex Work Unit Chemistry
wherein each A is independently selected from the group consisting of polyethyleneoxy, polypropyleneoxy, and polyethyleneoxy/polypropyleneoxy copolymers, and wherein each A is independently present in the range from 1 to 20 repeating units of polyethyleneoxy, polypropyleneoxy or polyethyleneoxy/polypropyleneoxy copolymers;
wherein each R1 is independently selected from H, C1-4 alkyl, alkoxy alkyl, halogens, aryl, substituted alkyl or substituted aryl, —COR2, —CH2COH, —COOR2, —COOH, —SO3H, —CH2COOH, —CH2CH2Cl, —CH═CH2, —CH2CH(OH)2, and salts thereof; wherein each R2 is independently selected from C1-18 alkyl, aryl, substituted aryl, and substituted alkyl; and
(iii) at least one of the following structures, or salts thereof:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
and
wherein the laundry care composition imparts a whitening effect to a cellulose-containing textile article that is measurably greater than a polyester-containing textile article treated with the laundry care composition, wherein the whitening effect is measured via a whiteness index on each textile article,
wherein the polymeric thiophene hueing agent contains at least one amide moiety.