FR2535341A1 - LAUNDRY COMPOSITION FOR LOW TEMPERATURE LAUNDRYING AND CLEANING OF PROTEIN SOILS - Google Patents

Abstract

LESSIVE COMPOSITION BASED ON ALKALINE PERBORATE CHARACTERIZED BY THE FACT THAT IT INCLUDES A PERBORATE DECOMPOSITION ACTIVATOR CHOSEN FROM CYANAMIDE AND METAL SALTS AND A PROTEOLYTIC ENZYM OBTAINED FROM A BACILLUS STRAIN. THE LAUNDRY COMPOSITIONS ACCORDING TO THE PRESENT INVENTION CONDUCT SIMULTANEOUSLY TO THE ACTIVATION OF THE ALKALINE PERBORATE AND TO THE CLEANING OF PROTEIN SOIL AND THEREFORE ALLOWS LOW TEMPERATURE BLEACHING WITH CLEANING OF PROTEIN SOIL.

Description

2535,341

  The present invention relates to a detergent composition for low temperature laundering and cleaning of proteinaceous dirt. More specifically, the invention relates to a detergent composition for laundering at a temperature of less than or equal to C and the cleaning of proteinaceous stains, that is to say to say

  stains such as blood, egg, and ink stains.

do not, etc

  Until now it was only

these two problems.

  Activators are known which allow peroxidic bleaches to destabilize at a temperature below 60 ° C. The activators used industrially or most commonly mentioned are products which react on peroxides to give

  birth to peracetic acid which is a white

  powerful chimer at low temperature Among the activators

  mention may be made of tetracetylenediamine (TAED), tetracetyl

  glycoluryl (TAGU), α-acetoxy methyl N-N'diacetylmalona-

  mide (AP 31) covered by French patents 2,363,541 and 2,363,629 of the applicant, as well as cyanamide and its

  derivatives covered by the French patent 2,340,371.

  Cleaning of protein soils requires

  the implementation of enzymatic products.

  So far the activation of peroxides and the cleaning of protein soils have not been implemented.

  simultaneously because of the incompatibility between the

  enzymatic activity and the presence of peracetic acid in the

washing medium.

  This difficulty has been overcome by the present invention which provides a detergent composition based on

  perborate to achieve these two objectives by effectively

  The alkaline perborate-based detergent composition according to the invention is characterized in that it comprises a perborate decomposition activator chosen from cyanamide. and its metal salts such as calcium, sodium, magnesium, etc., and an enzyme

  teolytic obtained from a strain of Bacillus.

  The amounts of activator and enzyme are respectively between 2 and 1% by weight of laundry

  total and 0.4 and 0.8% by weight of total lye.

  The result (action at a temperature of less than or equal to 600 ° C. and simultaneous cleaning of protein soils) of the invention was not obvious, as shown by

  The tests below show that the

  Sociation of an enzyme and an activator other than that provided by the invention does not simultaneously allow the cleaning of protein spots and bleaching at 601 C.

  The invention will be described in greater detail in

the examples below.

EXAMPLES

  The examples were made using an

  similar AHIBA allowing both bath agitation

  washing and thermal regulation.

  Four EMPA standardized cotton fabrics with special soils were selected: wine, cocoa, tea, EMPA 116 was stained with milk, blood and Indian ink. Soil removal was measured optically.

  using an ELREPH O photometer from Zeiss.

  The basic detergent used is the normal laundry

  EMPA This detergent is non-perborated and non-azured.

  Its composition is representative of the detergents currently

on the market.

  The percentages by weight of the various constituents relative to the basic detergent are as follows: Sodium Perborate Activator Enzyme proteolytic obtained from a strain of Bacillus. : 15% or 1 g / 1 bath

2.94%

  0.4%, ie 0.0268 g / l of bath. EMPA lye is added to

6.7 g / l of bath -

  The temperature rise diagram is the following

  before: the temperature is raised to 60 C in 30 minutes and

hold this value for 30 minutes

  After washing for each fabric, the

  see whitening of the bath used, defined in the following way

  te: whitening power = Final white Initial white x 100 Initial white

-EXAMPLES 1 to 8

The results of these examples

Table I below.

are given in

TABLE I

  Lxempie Fabric Exeple Composition of the bath Wine Cocoa Tea EMPA 116 Nu EMPA EMPA (Sali Jesure Protein> Basic detergent EMPA 4155, 52,, 3 5; Basic detergent EMPA 2 Perbor'ate 15 5; 40,3 5; 17% 23 , 22.7 5 Enzyme 0.45 EMPA 3 base wash Pezborate 15 5, 44.6 5, 9.6 5, 30.4 5, 0.62 5;

AP 31 2.94 5;

  Basic laundry EMPA 4 Perborate 15% 4651; l% 12% 1,

AP 31 2.94 5; 4; I ,; 125,785

  Enzyme 0.45; Basic laundry EMPA Perboz'ate 15 5; 48.7 ± 5.5; 29.1 5; 0.5 5;

TAED 2.94 5;

  Basic laundry EMPA 6 Perborate 15 5; 47.75; 16, 5; 15.2;

TAED 2, 94 5;

  Enzyme 0.45; Basic laundry EMPA 7 Perborate 15 5; 51.85; it is 5; 28.8% 0.85; Cyanamide 2.94%; Basic detergent EMPA 8 Perborate 15 5; 51.35; 21.35; 33.4, 5, 33.1; Cyanarnide 2.94 5; Enzyme 0.45; The whitening power of the bath used for fabrics containing EMPA wine stains, EMPA cocoa, tea and for a proteinaceous EMPA 116 fabric is indicated.

  (milk stains, blood and Indian ink).

  The above tests call for the following comments:

  EXAMPLE 1 This example concerns the behavior of a laundry

  Commercial type at 600 C. EXAMPLE 2 The introduction of an enzyme has no effect on the bleaching of stained tissues of wine and tea but improves

  clearly the result on EMPA 116 fabric with

  as well as the bleaching of the cocoa stained fabric.

  EXAMPLES 3 and 5: The use of a perborate activator of TAED or AP 31 type leads to an improvement for a cloth stained with wine or tea For other soils the effect

is not sensitive.

  EXAMPLES 4 and 6: These examples relate to the use of

  of an activator (AP 31, TAED) and an identical enzyme

to that of Example 2.

  On the EMPA 116 tissue with protein stain, the

  obtained is less than that obtained in the example

  On the other hand, for cocoa-stained fabrics the results

  Examples 4, 6 and 2 are equivalent.

  EXAMPLE I The results are equivalent to those of the examples

  ples 3 and 5 for tea-stained fabrics or fabrics

EMPA 116.

  EXAMPLE 8 This example illustrates an embodiment of the invention. On each of the four fabrics tested, the whitening power obtained is better than for the compositions

  Other Examples This example shows that

  between the enzyme and free cyanamide is excellent.

  Furthermore, a synergistic effect is observed. The action of the enzyme on the EMPA 116 protein-fouling tissue is

  less than that observed in Example 2 (enzyme alone).

Claims (1)

A alkaline perborate alkaline detergent composition characterized in that it comprises an activator for decomposing perborate selected from cyanamide and metal salts and a proteolytic enzyme obtained from a strain of Bacillus. A detergent composition according to claim 1 wherein said metal salts of cyanamide are selected from calcium, sodium and magnesium salts. 3 Laundry composition according to one of the claims   1 and 2 in which the amounts of said activator and said enzyme are respectively between 2 and 8% by weight.   of total lye and 0.4 and 0.8% by weight total lye.