CS251377B1 - Proteolytic enzymes' stabilizer in powder detergents with sodium peroxoborate content - Google Patents

Abstract

The ee solution concerns enzymatic work resources and solves their increase storage stability. Of the invention is the use of perfume stabilizers as proteolytic stabilizers of enzymes in powder detergents and containing them sodium perborate with stabilizers they are polymeric organic substances based on polyecrylates, polyalkyl methacrylate, acrylonitrile copolymers butadiene and styrene, branched desserts of olefins having the number of carbon atoms Cg to Cgp with a molecular weight of 450 to 1,190 or silica or mixtures thereof substances used in the contents of 0.01 to 3% % by weight, based on n% detergent. Main advantages consist of ensuring biological detergent activity even in the long term storage, substantially extends the selection perfume, and it depreciates ee usage expensive components - enzyme.

Description

The invention relates to the use of known perfume stabilizers based on polymers and copolymers of organic substances, e.g. polyacrylates, polyacrylonitrile, polypropylene and the like, or SiO2 as stabilizers of proteolytic enzymes in sodium perborate-containing detergent powders for washing.

Proteolytic enzymes, which significantly increase the detergency performance of dairy products, are part of the most effective detergents. A major problem in the production of enzymatic detergents is the limited storage stability of the enzymes.

Although the commercial products supplied to detergent manufacturers are stabilized during production by a number of different substances, such as calcium, magnesium! and zinc salts, polymers of various types, formates, borates, phosphates, etc., during storage, enzymes are inactivated due to the interaction of the components, resulting in a decrease in enzymatic activity during storage, resulting in short guarantee periods for biologically active detergents.

This is mainly due to the hydrolytic reactions of the basic ingredients of detergents, ie polyphosphates, alkaline electrolytes and especially peroxy compounds with water, which is part of the formulas, and also negatively affects the atmospheric humidity absorbed by the hygroscopic detergents over traditional paper packaging materials.

The stability of the enzyme is particularly affected by sodium perborate and perfumes, which are present for commercial reasons in all laundry detergents for consumers. Therefore, the selection of perfume for enzymatic detergents must always be of particular concern and their applicability is limited.

The decisive criterion is the enzymatic stability, the desired type of perfuming up to the secondary criterion. The choice of fragrant compositions is narrowed for enzymatic detergents and inert perfumes are virtually non-existent. The problem is all the more serious because both enzymes and perfumes, although they account for only a small proportion of the weight of detergents, account for up to 20% of the raw material demands of detorgons.

More recently, so-called stabilized perfumes have been used in the manufacture of detergents, which are perfume compositions deposited on large surface carriers such as silica or liquid to gel blends of perfume and polymer of various types, where a number of powder and liquid perfume stabilizers can be into detergents also separately. These perfume stabilizers are applied because they substantially reduce the volatility of the fragrances, increase their resistance and do not reactivity.

The new flowability of perfume stabilizers is explained by the use of perfume stabilizers as stabilizers of proteolytic enzymes in powdered detergents containing sodium perborate, the stabilizers being polymeric organic substances based on polyacrylates, polyalkyl methacrylate, acrylonitrile copolymers, butadiene-olefin and styrene, styrene, rosin, styrene, rosin, styrene The number of carbon atoms C8 to C18 with a molecular weight of 450 to 1190 or silica or mixtures thereof can be used in amounts of 0.01 to 3% by weight, based on the detergent.

The main advantages of the use of perfume stabilizers As proteolytic enzyme stabilizers, the high biological activity of detergents can be ensured even during long-term storage, the choice of perfumes for these types of products is considerably expanded and the use of a costly enzyme component is economical.

Examples

1. By means of any technological process for the production of powdered detergents, a detergent composition of 7% by weight is produced. % sodium dodecylbenzenesulfonate, 3 wt.

sodium soap, 4 wt. of a fatty alcohol with 10 moles of oxyethylene per molecule, 1.5 wt. % carboxymethyloelulose, 5 wt. % water-based solids, 3 wt. % water, 0.3 wt. % brightening agents, 35 wt. sodium triphosphate, 17 wt. % sodium perborate, 0.2 wt. % silicone defoamer, 0.5 wt. alkaline proteases,

23.2% wt. % sodium sulfate and 0.3 wt. liquid mixtures of perfume and polyacrylate. A high performance universal detergent with increased enzyme stability is obtained.

2. A detergent composition of 6 wt. % sodium dodecylbenzenesulfonate, 2 wt. % sodium soaps of higher fatty acids, 2 wt. % sodium soap, 3.5 wt. % oxyethylenated fatty alcohol, 1.5 wt. carboxymethyloellulose, 38% haot. sodium triphosphate, 17 wt. % sodium perborate, 0.8 wt. alkaline proteases, 0.3 wt.%, optically brighteners, 5 wt. % by weight of water glass, 0.3 wt. % perfume, 1 wt. % of branched olefins having an average molecular weight of 560.5 wt. % residual water and 17.6 wt. sodium sulfate.

A detergent is obtained with reduced foaming and increased enzymatic storage activity.

The increased storage stability of the enzyme (5 months) due to the use of perfume stabilizers is demonstrated by the following performance monitoring results of the detergents of the Examples with and without stabilized perfume.

% washing ability

fresh stored stored stored product without without se without perfume stabilizer stabilizer perfume perfume perfume

Example 1 Example 2

69.4 60.2

79.5 70.3

45.7

52.9

55.1

62.8

3. A detergent base is prepared on a drying tower with a 8% weight reduction. % sodium dodecylbenzenesulfonate, 4 wt. soap, 1 wt. % of oxyethylated fatty alcohol, 25 wt. % sodium triphosphate, 25 wt. % zeolite A, 20 wt. % sodium sulfate, 10 wt. % sodium disilicate, 2 wt. % magnesium silicate, 1.5 wt. % carboxymethylcellulose, 0.3 wt. % of a brightening agent and up to 100 wt. water and 80 parts of this base are mixed with 15 parts of sodium perborate, 0.4 parts of a mixture of perfume and amorphous SiO ₂ in a weight ratio of 1: 1.3 parts of a nonionic surfactant and 0.6 parts of an enzyme.

The detergent obtained after 12 months of storage has 80% enzymatic activity.

Claims (1)

Use of perfume stabilizers such as polymeric organic substances based on polyacrylate, polyalkyl methacrylate, acrylonitrile, butadiene-styrene copolymers, mixtures of branched olefins having a carbon number of Cg to Cgg with a molecular weight of 450 to 1190 or silicon dioxide or mixtures thereof as proteolytic enzyme stabilizers in powder detergents containing sodium perborate.