Laundering process for whitening synthetic textiles

Patent metadata

Field	Value
Publication number	US-2016237382-A9
Application number	US-201314021150-A
Country	US
Kind code	A9
Filing date	Sep 9, 2013
Priority date	Jun 15, 2005
Publication date	Aug 18, 2016
Grant date	—

Abstract

The present invention relates to the use of a combination of a free fluorescent whitening agent and cationic polymer as a brightening agent for a synthetic single or blended textile, especially polyester textile, and to a corresponding brightening agent as well as a laundering process for brightening a synthetic, single or blended textile, which is characterized by a) preparing a composition by contacting a free fluorescent whitening agent with a cationic polymer, and b) treating said synthetic, single or blended textile with the composition prepared in step a).

First claim

1 . A laundering process for brightening a synthetic, single or blended textile, which is characterized by
a) preparing a composition by contacting a free fluorescent whitening agent with a cationic polymer, and b) treating said synthetic, single or blended textile with the composition prepared in step a).

2 . A process according to claim 1 , wherein the synthetic textile is a polyester or polyamide textile, or a polyamide or polyester blended textile.

3 . A process according to claim 1 , wherein the free fluorescent whitening agent is amphiphilic.

4 . Process according to claim 1 , wherein step a) comprises introducing the free fluorescent whitening agent and the cationic polymer in water.

5 . Process according to claim 1 , wherein step a) is carried out for initiating a wash cycle.

6 . Brightening agent for a synthetic single or blended textile comprising a cationic polymer and a free fluorescent whitening agent and optionally water.

7 . Brightening agent according to claim 6 , comprising on 100 parts by weight of cationic polymer, 0.1 to 1000 parts by weight of a free fluorescent whitening agent and 0 to 2000 parts by weight of water.

8 . Brightening agent according to claim 6 , wherein the free fluorescent whitening agent is a compound of formula (1)

wherein
L is a radical of formulae (2) or (3)

wherein
R 1 and R 2 are independently from each other a substituted or unsubstituted aryloxy;
or a saturated or unsaturated, interrupted or uninterrupted substituted
or unsubstituted aliphatic cycloaliphatic cycloaliphatic or aliphatic alkoxy or aralkyloxy;
or a hydroxy or chloride radical; or
a substituted or unsubstituted amine; and

R 3 and R 4 are independently from each other hydrogen or a substituted or unsubstituted, branched, unbranched, interrupted or uninterrupted alkyl radical or a substituted or unsubstituted carbocyclic or
heterocyclic aryl radical, and

M is a cation.

9 . Brightening agent according to claim 8 , wherein the free fluorescent whitening agent is of formula (1), wherein L is a radical of formula (2) and wherein
R 1 and R 2 are independently from each other an amine.

10 . Brightening agent according to claim 8 , wherein the free fluorescent whitening agent is of formula (1), wherein L is a radical of formula (2) and wherein
R 1 and R 2 are independently from each other an amine, which is substituted, unsubstituted, saturated or unsaturated, branched, unbranched, interrupted or uninterrupted alkylamine, alkylenamine, di-alkylamine, dialkylenamine, N-alkyl-arylamine, N-alkylen-arylamine, N-alkylene-arakylamine or N-alkyl-aralkylamin; or substituted or unsubstituted aryl or aralkyl or N-aryl-aralkylamine; or interrupted or uninterrupted, saturated or unsaturated aliphatic cycloaliphatic alkylamine.

11 . Brightening agent according to claim 8 , wherein the free fluorescent whitening agent is of formula (1), wherein L is a radical of formula (2) and wherein
R 1 is substituted or unsubstituted arylamine, aralkylamine, N-alkyl-arylamine, N-alkylen-arylamine, N-alkyl-aralkylamin, N-alkylen-aralkylamine or N-aryl-aralkylamine; and R 2 is substituted, unsubstituted, saturated or unsaturated, branched, unbranched, interrupted or uninterrupted C 6 -C 40 alkylamine, C 6 -C 40 alkylenamine,
di-C 1 -C 6 alkylamine, di-C 1 -C 6 alkylenamine, N—C 1 -C 6 alkyl-arylamine,
N—C 1 -C 6 alkylen-arylamine, N—C 1 -C 6 alkylen-aralkylamine or N—C 1 -C 6 alkyl-aralkylamin; substituted or unsubstituted arylamine, aralkylamine or N-aryl-aralkylamine; a saturated or unsaturated, interrupted or uninterrupted substituted or unsubstituted aliphatic, cycloaliphatic alkylamine.

12 . Brightening agent according to claim 8 , wherein the free fluorescent whitening agent is a compound of formula (30)

wherein
R 20 is hydrogen, or substituted or unsubstituted aryl, aralkyl or N-aryl-aralkyl; and
R 21 is substituted, unsubstituted, saturated or unsaturated, branched, unbranched, interrupted or uninterrupted C 6 -C 40 alkyl, C 6 -C 40 alkylene, C 1 -C 6 dialkyl, C 1 -C 6 dialkylene; substituted or unsubstituted aralkyl; and
M is a cation.

13 . Brightening agent according to claim 6 , wherein the cationic polymer has a molecular weight within the range from about 2,000 to about 30,000,000.

14 . Brightening agent according to claim 6 , wherein the cationic polymer comprises at least one cationic monomer repeating unit of formula
—(CR 5 R 8 —CR 7 Q)-
wherein each of R 5 -R 7 is independently selected from hydrogen, substituted or unsubstituted C 1 -C 4 alkyl, optionally substituted phenyl, optionally substituted benzyl, carbocyclic and heterocyclic groups, and Q is selected from groups of formula
—(CH 2 ) x -(CO) y -R 8

wherein x is 0 to 6 and y is 0 or 1, R 8 being selected from —O(CH 2 ) z N + (R 9 ) 3 X − , —OCO(CH 2 ) z N + (R 9 ) 3 X − , —NHCO(CH 2 ) z N + (R 9 ) 3 X − , —(CH 2 ) z N + (R 9 ) 3 X − , nitrogen heterocyclic quaternary ammonium, nitrogen heterocyclic N-oxide, aromatic N-heterocyclic quaternary ammonium, aromatic N-heterocyclic N-oxide; wherein z is from 0 to 6, X − is a water soluble cation such as an alkaline metal ion, and R 9 is selected from hydrogen, C 1 -C 8 alkyl and C 2 -C 8 hydroxyalkyl; or is derived from monomers of formula:

wherein
each R 10 is independently an olefin comprising unit which is capable of propagating polymerization in addition to forming a cyclic residue with an adjacent R 10 unit; and
each R 11 is C 1 -C 12 linear or branched alkyl, benzyl, substituted benzyl.

15 . Brightening agent according to claim 14 , wherein the cationic polymer comprises co-monomers for copolymerization with the cationic monomer units, wherein said co-momomers are of formula
—(CR 5 R 6 —CR 7 R 12 ),
wherein R 5 , R 6 and R 7 are as defined in claim 15 ; R 12 is independently selected from hydroxy, groups as defined for any of R 5 -R 7 , and groups of formula
—(CH 2 ) x —(CO) y —R 13 ,

wherein x is 0 to 6 and y is 0 or 1, and R 13 is selected from hydrogen, hydroxyl, halogen, nitrilo, —OR 3 , —O(CH 2 ) x N(R 9 ) 2 , —OCO(CH 2 ) x N(R 9 ) 2 , —NHCO(CH 2 ) x N(R 9 ) 2 , —(CH 2 ) x N(R 9 ) 2 , carbocyclic, heterocyclic and —NHCHO, wherein R 3 is hydrogen or a substituted or unsubstituted, branched, unbranched, interrupted or uninterrupted alkyl radical, or a substituted or unsubstituted carbocyclic or heterocyclic aryl radical,
and R 9 is as defined in claim 15 .

16 . Brightening agent according to claim 6 , wherein the cationic polymer comprises compounds of formulae (25), (26) and (27)

wherein
n is an integer and is interrupted or uninterrupted, substituted or unsubstituted, branched or unbranched C 1 -C 30 alkyl, and
R′ is C 1 -C 4 alkyl,

wherein
x is 0 to 6, and
R″ is C 1 -C 4 alkyl,

Assignees

• Basf Se

Inventors

• Hochberg Robert
• Becherer Oliver
• Schultz Bernard
• Scheffler Goetz
• Schlatter Rene

Classifications

• C11D3/42 Primary

  Brightening agents {; Blueing agents} · CPC title

• C11D3/349

  additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea · CPC title

• C07D251/68

  Triazinylamino stilbenes · CPC title

• C11D3/3769

  (Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines · CPC title

• C11D3/3776

  Heterocyclic compounds, e.g. lactam · CPC title