RU1796723C - Size for polyester complex yarns - Google Patents

Abstract

Usage: weaving. The inventive dressing contains sulfonic aromatic polyester (with mol.m. 890-1135) 7-10 wt.%, A mixture of anionic and nonionic surfactants 0.1-0.8 wt.% And water up to 100 wt.% . The polyester has the formula cng / I n-osn2-s-sn2-o-s s-o - cng-s-. CH2OH. CH2OH o about. VL l CH, OH -CH2Q-C C-0CH2CH-CH2C1 П S03Na 0. P where or H,. Mixture ® of surfactants may be a sulfoside-31 preparation. Properties of dressing and threads: washability of the dressing 8.0-9.7 points, adhesion to threads m (11.6-18.1) x10 J / cm2, breakage of threads in weaving 0.11-0.13 cases; / m. 1 tab. w yo

Description

The invention relates to a process for sizing polyester multifilament yarns before weaving.

The purpose of the invention is to improve the processing ability of the threads and leachability of the dressing,

This goal is achieved in that the dressing for polyester multifilament yarns, including an aqueous solution of sulfonated polyester based on derivatives of aromatic carboxylic acid, contains a polyester with a mol.m. 890-1135 formulas

sngon o o g sngon n-osngs-cng-o-s s-o | sngs - sn2on j. dHjoH

° - f

about

-CHjO-C -CH2CH-CH7Ct

SO, Na

LO O

XI N3 CO

I R

where R or H,. R

and additionally a mixture of anionic (ACAS) and nonionic surface-active substances (surfactants) in the following ratio of components, May. %:

Polyester 7-10 A mixture of anionic and nonionic surfactants 0.1-0.8 Water Else The sulfonated oligopolyether used in the dressing is a new, first synthesized polymer. It is obtained by the interaction of dimethyl terephthalate, pentaerythritol, propranchlorohydrinsulfonic acid and phthalevo

go anhydride.

As a surfactant, the dressing contains a mixture of anionically active and nonionic surfactants, for example, a sulfaside-31 preparation based on a mixture of sodium salts of alkylbenzenesulfonic acids with Cii-Ci2 alkyl with ethoxylated monoethanolamides of synthetic fatty acids of the Cio-Cie fraction with a degree of oxy-ethane- 5-6 and antifoam BA, imported drugs of a similar structure, for example sulfoxol B and precolor AN (GDR).

The introduction of surfactants into the dressing, which is a mixture of anionic and nonionic surfactants, improves the process of processing polyester complex filaments and the leachability of the dressing.

The invention is illustrated by the following examples for the synthesis of polyester, the preparation and use of dressing.

Example 1 (polyester synthesis). A 250 ml three-necked flask equipped with a thermometer, stirrer and Dean-Stark trap was charged with 19.4 g (0.1 mol) of dimethyl terephthalate and 27.2 g (0.2 mol) of pentaerythritol. The contents of the flask are melted, the stirrer is turned on, and the reaction mixture is stirred for 1 h at 260 ° C while methanol is distilled off. After stopping the distillation of methanol, the temperature in the flask was reduced to 200 ° C. 19.65 g (0.1 mol) of the sodium salt of propanchlorohydrin sulfonic acid (Na-PCHSC) are charged and stirred for 0.5 h. The temperature is reduced to 160 ° C and 29.6 g (0.2

mol) phthalic anhydride. Stir the contents of the flask at 160 ° C for 1 h. The temperature was lowered to 120 ° C and 8.4 g (0.1 mol) of sodium bicarbonate were charged in small portions. Raise the temperature to 160 ° C and mix until

 obtaining a uniform melt for 0.5 h, after which the product is discharged. Gender: 89.8 g (86%) of solid white resin are taught

5

0 5

0

5

0 5 0

5

different weights with the following characteristics:

Acid number 0.2 mg KOH / g

Content

sulfo groups 11.5%

The solubility in water is complete,

Concentration

saturated water

solution55%;

Melting point 92 ° C.

Like m. of product / 890

The calculated molecular mass is 876.5.

The following are examples of the preparation and use of a dressing.

Example 2, 10.0 wt.% Oligoester with mol.m. 890 and a molar ratio of dimethyl terephthalate: pentaerythritol phthalic anhydride monomers: Na-PHGSK 0.1: 0.2: 0.2: 0, diluted in 60 wt.% Water, stirred with heating to 40-45 ° С . until a uniform, colorless solution is obtained, 6.1 wt.% sulfaside-31 and the required amount of water (up to 100 wt.%) are added, stirred and heated to 58-60 ° C.

The resulting solution is used for sizing of 15.6 tex polyester yarns on a ShB-9-140 machine with a contact drying method in the zones: I zone - 80 ° C, II zone - 120 ° C, III zone-95 ° C.

The processing results are shown in the table.

Example 3, 9.0 wt.% Oligoester with mol.m. 1135. And in a molar ratio of dimethyl terephthalate: pentaerythritol monomers: phthalic anhydride: No.-ПГГСК 0.1: 0.3: 0.3: 0.1 diluted in 60 wt.% Water, stirred with heating to 4Q- 45 ° C until a homogeneous colorless solution is obtained, 0.3 wt.% Sulfaside-31 is added, the amount of water required for the calculation (up to 100 wt.%) Is stirred and heated to 50-55 ° C.

The resulting solution is used for dressing 15.6 tex polyester multifilament yarns on a SB-9-140 machine with a contact drying method in the zones: I zone - 75 ° C, and zone - 105 ° C. Ill zone - 85 ° C. The processing of the sizing base is carried out on STB-2-330 machines,

The processing results are shown in the table,

Example 4. 8.0 wt.% Oligoester with mol. m 1025 and a molar ratio of monomers dimethyl terephthalate: pentaerythritol: phthalic anhydride: Na-PCHSC 0.1: 0.3: 0.1: 0.1 diluted in 60 wt.% water, stirred by heating to 40-45 ° C to obtain a uniform colorless solution 71796723 8 Recycling ability of polyester multifilament yarns