SU887609A1 - Glue composition - Google Patents

Description

(54) COMPOSITION OF GLUE

one

The invention relates to the development of adhesives for gluing shoe parts when unilaterally applying glue to one of the glued surfaces.

The composition of the adhesive is known for one-sided application of shoe parts to one of the glued surfaces, including polychloroprene rubber, a vulcanizing group: zinc oxide, magnesium oxide and thiuram, inden-kz maronic resin, I-tert.butylphenol-formaldehyde resin and solvent: ethyl acetate and gasoline, for example, in the ratio of 9: 2: 1.5: 0.1: 4: 3: 35: 4b l.

However, due to the drying time, high activation temperature and high cost, the known composition of the adhesive has not been recognized in the shoe industry.

The purpose of the invention is to improve the conditions for the formation of an adhesive compound, to increase the adhesive and cohesive properties of the adhesive layer,

as well as ensuring the reliability of fastening parts of the bottom and top, shoes.

This is achieved in that the adhesive composition for application to unilateral one surface parts of footwear comprising polihloroyrenovy rubber (Nairit - SNPs curatives: zinc oxide, magnesium oxide and a thiuram, coumarone-indene resin, p-tert-butilfenolformaldegidnuyu resin and solvent: ethyl acetate and gasoline, additionally contains the product of copolymerization of chloroprene with dimethylvinyl ethynylcarbinol mercaptan regulation with a molecular weight of 150,000-200,000 and Carrere plasticity of 0.6-0.7 and disulfide alkyl phenolformal degidnuyu resin with a content of 2-8% by weight lolnyh methylene groups and a softening point of 60-80 with the following component ratio, wt.%.:

Polychloroprene rubber C nairit-OHnJ

The product of the copolymerization of chloroprene with dimethylvinyl ethynylcarbinol

, p-tert.-Butylphenol formaldehyde resin Indenkkumaronova resin

Nairit SNPS

The product of the copolymerization of chloroprene with dimethylvinyl ethynylcarbinol

Inden-coumarone resin.

p-tert.-Butylphenol formaldehyde resin 101-k

Disulfide alkyl phenol formaldehyde resin

Magnesia oxide

Thiuram

Zinc oxide

Ethyl acetate

Petrol

Glue is made as follows. 5-10 kg of the product of copolymerization of chloroprene with dimethylvinylstenylcarbinol and nairit SNPS load on the rollers. Rolling is done with a gap between the rolls of 1 mm.

The rolling time of a lolimer with intensive cooling of the rolls is 5-15 minutes.

In the next 5 minutes a mixture of magnesium oxide and thiuram is introduced. Introduction

Disulfide alkylphenol formaldehyde resin Vulcanizing group:

magnesium oxide

zinc oxide

Thiuram Solvent:

ethyl acetate

petrol

Examples 1-2. Prepared glue composition, see tab.1.

Table 1

10.7

10.7 4.2

4.2

6.5

1.5

0.1

2.1

30.0

30.0

zinc oxide is produced for the next 5 minutes.

The total time for rolling the adhesive mixture with continuous trimming of the film on the rollers was 15-25 minutes.

Immediately after rolling, the glue mixture is crushed.

The solvent is introduced into the mixer in two times the weight of the adhesive mixture, the resins are loaded. After dissolving the resin, I load the glue mixture, stir thoroughly, and then introduce the remaining amount of solvent to form a 3040% strength solution with a Hechinson viscosity of 1.4-1.8 seconds. When used, glue is applied to the prepared surface with one of the bonded materials twice. The drying time of the adhesive film at 18-20 C was: after the first spreading from 30 minutes to 24 hours

Shoe top fabric (roventsanka) - Darnit rubber

Kirza-rubber Darnit

Fabric (miner's) porous rubber Upsh

Natural leather-darnite rubber. The obtained strength characteristics of glue seams confirm the possibility of using the proposed adhesive for the one-sided application method. The proposed glue for fastening the bottom to the top of the shoe by the method of one-sided application provides, in comparison with the known adhesives, reliable strength of the glue line when pasting one of the glued surfaces, for example, the sole. In addition, the wetting ability and adhesion properties of the adhesive film are significantly improved, contamination of the shoe with glue is eliminated, especially with the top of textile materials, and it is also prevented from slipping during the pressing operation. The invention saves solvents by increasing the concentration of glue up to 40% and contributes to the improvement of sanitary and hygienic conditions in the working area, as well as reduces environmental pollution.

2.4

4.5 2.4 4.0

2.4

Claims (2)

3.5 2.4 2.5 9i after the second QT smearing 15 minutes to 45 minutes. Before gluing, the thermal activation of the dried glue film is carried out with simultaneous heating of the non-coated surface at 200 ° C for 3–20 s. The duration of pressing on presses was -20-40 s with a pressure of 3.0-4.0104 Pa. The test results of adhesive joints obtained using this glue on standard shoe materials are given in table. 2. Table 2 Claims of the invention The composition of an adhesive for one-sided application of shoe parts to one of the glued surfaces, including polychloroprene rubber, a vulcanizing group, zinc oxide, magnesium oxide and thiuram, indene-coumarone resin, p-tert.-butylphenol formaldehyde resin and solvent, ethyl acetate and gasoline, characterized in that, in order to improve the conditions for the formation of the adhesive bond, improve the adhesive and cohesive properties of the adhesive layer, as well as ensure the reliability of fastening of the bottom and top parts of the shoe, the composition of additionally contains the product of copolymerization of chloroprene with dimethylvinyl ethynylcarbinol of mercaptan regulation with a molecular weight of 150000-200000 and Carrere plasticity of 0.6-0.7 and disulfidalkylphenol-formadehyde grmol with a content of 2-8 wt.% of molar groups and an expansion temperature of 60- 80 With the following co-components, wt.%: Polychloroprene rubber 6.7-10.7 The product of the copolymerization of chloroprene with dimethylvinyl ethynylcarbinol, 6.7-10.7 I p-tert.-Butylphenol formaldehyde resin 2.5-4.2 Inden-cumarone resin 2.5-4.2 876098 Disulfide alkyl phenol formaldehyde 4, 0-6.5 hydna resin Vulcanizing J group: 1.4-2.1 zinc oxide 1.0-1.5 magnesium oxide 0.1-0.2 thiuram Solvent: 10 ethyl acetate 30.0-37.5 gasoline 30.0-37.5 Sources of information taken into account during the examination 1. Glue. Express information. Leather and footwear industry. 1968, №30, p. 24 (prototype).