IP Library Granted Patent US 7,541,324
Granted Patent B2
US 7,541,324 · App. 11/662,311 · Granted Jun 2, 2009

Bleach activator mixtures

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Quick Facts
Patent No.
US 7,541,324
App. No.
11/662,311
Granted
Jun 2, 2009
Kind
B2
Abstract

What are claimed are synergistically active bleach activator mixtures consisting of a) a hydroxybenzoic acid derivative of the formula 1 in which R is C 8 -C 11 -alkyl, and b) tetraacetylethylenediamine and/or 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine.

Claims (7)

1. A bleach activator mixture in formulated form, consisting of

a) a hydroxybenzoic acid derivative of the formula 1

in which R is C 8 -C 11 -alkyl, and

b) tetraacetylethylenediamine or mixtures thereof 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine or mixtures thereof.

2. The bleach activator mixture as claimed in claim 1 , consisting of from 5 to 95% by weight of the hydroxybenzoic acid derivative of the formula 1 and from 95 to 5% by weight of tetraacetylethylenediamine or 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine or mixtures thereof.

3. The bleach activator mixture as claimed in claim 1 , consisting of from 25 to 75% by weight of the hydroxybenzoic acid derivative of the formula 1 and from 75 to 25% by weight of tetraacetylethylenediamine or 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine or mixtures thereof.

4. The bleach activator mixture as claimed in claim 1 , consisting of from 60 to 40% by weight of the hydroxybenzoic acid derivative of the formula 1 and from 40 to 60% by weight of tetraacetylethylenediamine or 1,5-diacetyl-2,4-dioxo-1,3,5-hexahydrotriazine or mixtures thereof.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2015
From: WEYLCHEM SWITZERLAND AG
To: WEYLCHEM WIESBADEN GMBH
Reel/Frame 035235/0891 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 20, 2014
From: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH)
To: WEYLCHEM SWITZERLAND AG
Reel/Frame 033597/0431 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2007
From: REINHARDT, GERD; BORCHERS, GEORG
To: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
Reel/Frame 019022/0822 →