Leuco polymers as bluing agents in laundry care compositions

Patent metadata

Field	Value
Publication number	US-10472595-B2
Application number	US-201715800107-A
Country	US
Kind code	B2
Filing date	Nov 1, 2017
Priority date	Nov 1, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A leuco polymer comprising a polyethylenimine and at least one leuco moiety covalently bound to the polyethylenimine, wherein the polyethylenimine comprises three or more amine nitrogen atoms and 1 mol. % or more of amine hydrogen atoms in the polyethylenimine are replaced with a moiety selected from the group consisting of 2-hydroxypropyl, 1-hydroxypropane-2-yl, and polyalkoxy groups. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.

First claim

We claim:

1. A laundry care composition comprising:
(i) from 2 to 70 wt % of a surfactant; and
(ii) from 0.0001 to 20.0 wt % of a leuco polymer comprising a polyamine covalently bound to a leuco moiety,
wherein the polyamine is an alkoxylated polyethyleneimine comprising at least one ethoxylated group containing from 10 to 20 —CH 2 CH 2 O— repeating units,
wherein the leuco compositon is a compound according to formula (I)

wherein the ratio of Formula I to its oxidized form is at least 1:3; wherein each individual R o , R m and R p group on each of rings A, B and C is independently selected from the group consisting of hydrogen, deuterium and R 5 ; wherein each R 5 is independently selected from the group consisting of halogens, nitro, alkyl, substituted alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, —C(O)R 1 , —C(O)OR 1 , —C(O)O 31 , —C(O)NR 1 R 2 , —OC(O)R 1 , —OC(O)OR 1 , —OC(O)NR 1 R 2 , —S(O) 2 R 1 , —S(O) 2 OR 1 , —S(O) 2 O 31 , —S(O) 2 NR 1 R 2 , —NR 1 C(O)R 2 , —NR 1 C(O)OR 2 , —NR 1 C(O)SR 2 , —NR 1 C(O)NR 2 R 3 , —OR 1 , —NR 1 R 2 , —P(O) 2 R 1 , —P(O)(OR 1 ) 2 , —P(O)(OR 1 )O 31 , and —P(O)(O 31 ) 2 ;
wherein all of the R o and R m groups on all three rings A, B or C are hydrogen;
wherein G is hydrogen;
wherein R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, and R 4 ; R 4 is a organic group composed of one or more organic monomers with said monomer molecular weights ranging from 28 to 500;
wherein any charge present in any of the compounds is balanced with a suitable independently selected internal or external counterion.

2. A laundry care composition according to claim 1 , wherein at least one ethoxylated group on said ethoxylated polyethyleneimine contains from 5 to 9 —CH 2 CH 2 O— repeating units.

3. A laundry care composition according to claim 1 , further comprising an antioxidant.

4. A laundry care composition according to claim 1 , wherein the molecular weight of the leuco polymer is from 2000 to 30000.

5. The laundry care composition of claim 1 , wherein all three R p are —NR 1 R 2 .

6. A method of treating a textile, the method comprising the steps of:
(i) treating a textile with an aqueous solution of the leuco polymer as defined in claim 1 , the aqueous solution comprising from 10 ppb to 5000 ppm of the leuco polymer; and from greater than 0.0 g/L to 3 g/L of a surfactant,
(ii) optionally rinsing the textile, and
(iii) drying the textile.

Assignees

• Procter & Gamble

Inventors

• Miracle Gregory Scot
• Dey Sanjeev Kumar

Classifications

• C09B69/109

  containing other specific dyes · CPC title

• C09B69/101

  containing an anthracene dye · CPC title

• C11D3/40

  Dyes {; Pigments} · CPC title

• C09B69/103

  containing a diaryl- or triarylmethane dye · CPC title

• C11D3/26

  containing nitrogen {(C11D3/162, C11D3/164, C11D3/166, C11D3/168 take precedence)} · CPC title