SU1754753A1 - Adhesive for shoe soles - Google Patents

Abstract

The invention: the adhesive composition contains polychloroprene 16.0-18.0%, n-tert-butylphenol-formaldehyde resin 1.5-2.0%, white carbon black 1.0-3.0, zinc oxide 0.2-0.4 %, magnesium oxide 0.4-0.6%, oligopiperylene 1.2-2.0%, fulvene resin 1.25-2.0%, di-t-butyl-p-cresol 0.1-0.2 % and organic solvent - the rest. The adhesive composition is prepared in the traditional way. Characteristics: conditional viscosity according to VZ-4 (nozzle 7 mm) 20-36 s, after storage 6 months 22-38 s, 9 months - 25-40 s, 12 months 24-40 s, 18 months 26-40 s, adhesive strength (rubber-kersey) after 24 hours at 20 ° C 3.3-3.8 km / m, after storage for 6 months 3.4-3.9 kN / m, 9 months 3.3-3, 9 kN / m, 12 months 3.2-3.8 kN / m, 18 months 3.2-3.8 kN / m, at 45 ° C 2.9-3.2 kN / m. 2 tab.

Description

The invention relates to light industry and can be used in the manufacture of footwear, in particular, for gluing soles to the tops of shoes.

The Ropid-1 adhesive composition is known, including polychloroprene, zinc oxide, magnesium oxide, p-tert-butylphenol formaldehyde resin, polyoxypropylene urethanedepoxide, aerosil, a mixture of cadmium laurate and barium, and an organic solvent (a mixture of gasoline and emulsion).

However, the composition does not retain its properties during long-term storage.

A known adhesive composition for attaching thermoplastic elastomer soles, comprising a piperylene / styrene copolymer, oligopiperylene, petroleum resin, and ethyl acetate (2).

However, the composition does not retain its properties during long-term storage.

The closest in technical essence and achievable technical effect is Ropid-3 adhesive, including polychloroprene, p-tert-butylphenol formaldehyde resin, adhesive additives, zinc oxide, magnesium oxide, silicon dioxide and an organic solvent.

However, the known glue does not retain its properties during long-term storage.

The aim of the invention is to increase the adhesion strength of adhesive joints, the stability of adhesive properties and adhesive joints, the stability of adhesive properties and adhesive joints during storage.

This goal is achieved in that the adhesive composition for gluing the soles, including polychloroprene, g-tert-butylphenol-formaldehyde resin, silica, zinc oxide, magnesium oxide, adhesive additives and organic

SP Ch

cl

WITH

the solvent, as silica, contains white carbon black, as adhesion additives - Oligopiperylene and fulvic resin, and additionally di-tert-butyl-p-cresol with the following ratio of components,%

Polychloroprene 16,0-18,0

p-tert-butylphenol-formaldehyde

resin 1 5-2,0

Bela Soot1.0-3.0

Zinc Oxide 2-0.4

Magnesium Oxide 0.4 0.6

Oligopiperylene1-2-2.0

Fulven resin 1.25-2.0

di-tert-bugil-p-cresol 0.1-0.2

Organic Grower Else

For the preparation of glue, the required amount of polychloroprene is kneaded for 10-15 minutes, magnesium oxide, zinc oxide are added, and white carbon black is stirred for 2-3 minutes. The resulting mixture is loaded into a glue mixer, the remaining components of the glue are added and mixed for 3-4 hours until a homogeneous mass is formed.

For the manufacture of glue, Nairit NT-I polychloroprene (TU 6-01- 781-73) or its imported analog Saypren, zinc oxide (GOST 202-76), magnesium oxide (GOST 844-73), BS white soot are used. -50 (GOST 18307-78), p-tert-butylphenol-formaldehyde resin brand 101 K (TU 6-10-12-61 -74), ionol (OST 38.01420-87), a mixture of gasoline (GOST 443-76) with ethyl acetate ( GOST 8981-71), taken in a 1: 1 ratio by weight, or their mixture with toluene in a ratio by weight, respectively, 1: 1: 0.5.

Oligopiperylene (TU 38.103542-89) in appearance is a homogeneous liquid with a conditional viscosity according to the VZ-246 viscometer (at 20 ° C) for grades 1.2 and 3, respectively 25-60, 30-85 and 20-100 s , drying time to degree 3 (GOST 19007-73), equal to 24 hours, and a flash point in a closed crucible not lower than 31 ° C. The dry residue content is 69-73% by weight.

Fulven resin (TU 38 103646-88) in appearance is a clear liquid from yellow to dark brown in color. The dry residue is 70-75 wt.%, The viscosity (at 20 ° C) by the OZ-246 viscometer is 20-50 seconds and drying time to degree 3 - no more than 24 hours. Fulven resin is a waste of isoprene production, is separated from the fulvene fraction by two-stage distillation of volatile components, followed by their dissolution in SL 150/200 or white spirit and by group chemical composition is a 70% solution p oligoalkylfulvenes.

In Table 1, the glue recipe is given and Table 2 shows the properties of glue joints.

Adhesive viscosity and adhesive strength of adhesive compounds are determined by the standard method. The induction period of oxidation is determined by the kinetics of the absorption of oxygen by the adhesive film.

Claims (1)

The invention of the adhesive composition for gluing soles comprising polychloroprene, p-tert-butyl phenyl formahydehyde resin, silica, zinc oxide, magnesia, adhesive additives and organic solvent, so that, in order to increase the adhesive strength of adhesive compounds, the stability of the properties of glue and glue compounds during storage, och a kaest & silicon dioxide contains white carbon black as adhesion additives - oligopiperinelene and fulvenose resin and additionally di-tert-butyl-p-cresol at the following ratio of components, in wt.%: Polchchloroprene 16,0-18,0 p-tert-Butylphenol - formaldehyde gmola1.5-2.0 Bela Soot1.0-3.0 Oxide cycka0,2-0.4 Magnesium Oxide 0.4-0.6 Oligopiperylene1-2-2.0 Fulvenovach resin 1,25-2,0 Di-tert-butyl-p-cresol 0.1-0.2 Organic solventReal Table 1 Glue recipe Properties of glue and adhesive joints table 2 Continued table. 2