CS247293B1 - A method of washing polyester fabric with simultaneous fabric softener - Google Patents

Abstract

Method for washing polyester textile materials with simultaneous softening, where the washing is carried out in the presence of polyester ethers prepared by transesterification of hydroxyethyl terephthalate with polyethylene glycols at temperatures of max. 260 °C and a pressure of 200 Pa, with the subsequent rinsing bath after washing being acidified with an organic acid to pH 3 to 6.

Description

247293

The invention relates to a process for the washing of synthetic polyester textile materials with simultaneous fabric softening. There are known processes with a combined effect of, for example, the English patent GB Pat. After. No. 1,327,126, wherein a composition of a detergent composition comprising a quaternary ammonium wetting agent is provided, wherein the wetting agent comprises two aliphatic radicals having carbon numbers 12-22. No. 1,518,529 protects the detergent additive to prevent the formation of static electricity. French Patent 524,901 protects an organic synthetic laundry washing agent and a softened textile comprising a combination of anionic and nonionic detergents with sagglomerated bentonite. The subject matter of the French Patent 2 524 903 is bentonite granules suitable as a wetting additive for laundry preparations. Particularly a laundry and fabric softening composition comprising a synthetic ointment, a suitable textile auxiliary and a bentonite in combination with siliconate, or a derivative thereof, are the subject of the invention of French Patent 2,524,902. U.S. Pat. No. 4,401,803, which imparts a fleece-like, ainitic and non-staining property to the fabric, comprises a particulate laundry composition comprising from about 5% to about 40% of a water-soluble non-soap active agent and from about 10% to about 60% of water-soluble water. permissible fraction, neutral to alkaline component.

The disadvantage of these processes is the low operational certainty, while the use of anionic surfactants and quaternary ammonium salts, in the case of precipitation of additive, the formation of difficult to remove hard spots on the surface of the washed fabric and to redeposit washed impurities, much larger or smaller in size. to the need for several rinses.

The above-mentioned drawbacks are solved by a process for the washing of polyester fabric materials with simultaneous fabric softening, characterized in that it is carried out at a temperature of 40 to 80 ° C and the presence of 0.5 to 15 g / l of a product prepared by the re-esterification of hydroxyethyl terephthalate with polyethylene glycol relative to the product. The resulting rinsing bath is acidified with acetic acid and / or citric acid to a pH of 3-6. The advantage of this method is that the washing time is substantially reduced by at least 25-50% at the same degree of non-purity as in the prior art processes. The non-ionic character of the polyester ethers used in the washing process allows its application over a wide range of methods. The polyester ethers present in the wash bath strongly prevent the rewetting of the washed impurities on the washed synthetic textile material, thus limiting, remarkably omitting, the rinsing operations of the washed goods, largely leading to water savings.

The synthetic textile material treated by said process after subsequent drying of the anixed material simultaneously obtains antistatic and sputtering properties. The invention is further illustrated by the following examples: Example 1

100% textile material / polyester polyester braid with a weight of 242 g / m2 3 * savypral as follows:

Formulation "A": 2 g / 1 washing agent based on alkylaryl polyglycol ether 2 g / 1 soda calcined

Washing temperature: 60 ° C, Washing time: 60 minutes, Number of rinses 3.

Formulation "B": 0.5 g / l of an alkyl polyglycol ether of 10 g / l product prepared by re-esterifying hydroxyethyl terephthalate with polyethylene glycol having a relative molecular weight of 600 at a temperature of 245 ° C and a pressure of 180 Pa.

Washing temperature: 60 ° C, Washing time: 20 minutes

Number of rinses: 1x (acidified with acetic acid to pH 4.5).

Washing evaluations:

Formulation: "A" "B" 1. Redeposition efficacy: 38.9% _ 28.0% 2. Soil release - -, efficiency: 10.5% 70.3% 3. Antistatic efficiency: 2.5.1011 (Ohm cm) 1.4.109

Claims (2)

SUBJECT A method of washing polyester fabric materials with a fabric softener, characterized in that the washing is carried out at a temperature of 40 to 80 ° C in the presence of 0.5 to 15 g / l of a product obtainable by the esterification of hydroxyethyl terephthalate with polyethylene glycol. at max. 260 ^DEG C. and a pressure of 200 Pa and a subsequent rinsing bath are acidified with acetic and / or citric acid to a pH of 3 to 6.