Metal free bleaching composition

Patent metadata

Field	Value
Publication number	US-9657435-B2
Application number	US-201113703385-A
Country	US
Kind code	B2
Filing date	Jun 21, 2011
Priority date	Jun 28, 2010
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

The present invention relates to the use of a composition comprising specific a-amino-ketones, H 2 O 2 , a H 2 O 2 precursor or a peracid and optionally an activator as a bleaching mixture for textile materials or dishes either manually or in an automatic washing machine or dish washer. Further aspects of the invention are the composition comprising specific a-aminoketones and H 2 O 2 , a H 2 O 2 precursor or a peracid and a process for bleaching of stains or of soiling on textile materials or dishes in the context of a washing process either manually or in an automatic washing machine or dish washer. Also aspects of the invention are detergent formulations comprising such a composition and novel compounds.

First claim

The invention claimed is:

1. A process for the bleaching of stains or of soiling on textile materials or dishes in the context of a washing process or by the direct application of a stain remover comprising
treating a textile material or dishes in an aqueous medium either by hand or in an automatic washing machine or dishwasher, at a pH between 7 and 11, together with a mixture comprising
a) H 2 O 2 , a precursor of H 2 O 2 , or a peracid and
b) a compound of formula (3)

 wherein
R′ 1 is SCH 3 , S(O 2 )CH 3 , H, CH 3 , S(O)CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − ; or a compound of formula (4)

 wherein
R′ 1 is H, CH 3 , SCH 3 , S(O)CH 3 , S(O 2 )CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − ; or a compound of formula (5)

 wherein
R′ 1 is SCH 3 , S(O 2 )CH 3 , H, CH 3 , S(O)CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − ; or a compound of formula (6)

 wherein
R′ 1 =SCH 3 , S(O)CH 3 , S(O 2 )CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − ; or
a compound of formula (7)

 wherein
R′ 1 =H, S(O)CH 3 , S(O 2 )CH 3 , (CH 3 )(CH 3 CH 2 )S + BF 4 − , (CH 3 ) 2 S + BF 4 − , (CH 3 ) 2 S + PF 6 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − ;
wherein the mixture is free of metal complexes, and
wherein component a) is present in an amount of from 2 parts to 90 parts by weight and component b) is present in an amount of from 0.02 parts to 20 parts by weight; the sum being 100 parts.

2. The process according to claim 1 wherein component a) comprises a precursor of H 2 O 2 and a bleach activator.

3. The process according to claim 1 wherein component b) is a compound of formula (3)

wherein
R′ 1 is SCH 3 , S(O 2 )CH 3 , H, CH 3 , S(O)CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − .

4. The process according to claim 1 wherein component b is a compound of formula (4)

wherein
R′ 1 is H, CH 3 , SCH 3 , S(O)CH 3 , S(O 2 )CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − .

5. The process according to claim 1 wherein component b is a compound of formula (5)

wherein
R′ 1 is SCH 3 , S(O 2 )CH 3 , H, CH 3 , S(O)CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − .

6. The process according to claim 1 wherein component b is a compound of formula (6)

wherein
R′ 1 =SCH 3 , S(O)CH 3 , S(O 2 )CH 3 , (CH 3 ) 2 S + BF 4 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − .

7. The process according to claim 1 wherein component b is a compound of formula (7)

wherein
R′ 1 =H, S(O)CH 3 , S(O 2 )CH 3 , (CH 3 )(CH 3 CH 2 )S + BF 4 − , (CH 3 ) 2 S + BF 4 − , (CH 3 ) 2 S + PF 6 − or (CH 3 ) 2 S + (CH 3 O)S(O 2 )O − .

Assignees

• Frey Markus
• Rohwer Hauke
• Wendeborn Frederique
• Hazenkamp Menno
• Basf Se

Inventors

• Frey Markus
• Rohwer Hauke
• Wendeborn Frederique
• Hazenkamp Menno

Classifications

• C11D3/3917

  Nitrogen-containing compounds · CPC title

• C07C225/06 Primary

  and acyclic · CPC title

• C07C225/22

  having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton · CPC title

• C11D3/3915

  Sulfur-containing compounds · 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