SU1010099A1 - Adhesive composition - Google Patents

Abstract

YUTEEVA COMPOSITION, I include; i1a vinyl acetate water emulsion: (Polymer, thermosetting resin, o tl and h and a so that, in order to improve water resistance and reduce; r; zheny rigidity of electrofloated materials, it contains as a thermosetting resin alkaline condensation product of a .volac alkylresorcinol or resorcinol formaldehyde resin with formaldehyde, taken in a ratio of 1.4-3.3: 1, as an aqueous emulsion of vinyl acetate polymer, an emulsion of vinyl acetate homo- or copolymer with ethylene, dibutyl maleate or cm A mixture of emulsions at a trace of 1) the ratio of. components ma.ch; The specified aqueous emulsion of vinyl acetate polymer (on a dry basis) 100 i An alkaline condensation product of novolac ALS kilrezorcin- or resorcinformal 1-resin with Foe-yaldehyde, taken in a ratio of 1.4-3.3: 1 2.1-7 cups g Water 103.9 -115.2

Description

with

The invention relates to the manufacture of polymeric adhesives used for the manufacture of products with a nap, carried on electrostatically, mechanically, by spraying, as well as for gluing and duplicating textiles, artificial leather and other materials that are exposed during operation to moisture. Known adhesive composition, direct for obtaining flocked products, containing emulsion of copolymer of butyl acrylate, methyl methacrylate and methacrylic acid, polyacrylic thickener, melamine-formaldehyde precondensate, electrolyte and generous Cl, however, the strength of fixing the floor of 4-fold nap is 3 mm, 3 mm, and 4 mm, 4 mm, and 4 in. The tex is 2025 GS / ox, and after wet processing, no more than 5 gf / ox, which is not enough. In addition, the composition includes deficient products. A known adhesive composition, prepared by mixing resorcinol, formally, (Morpholine polyvinyl alcohol or polyvinyl acetate s in the presence of Water and methylcellulose 2. However, the composition has low viscosity and concentration and therefore low water resistance. The closest in technical essence and the result to be obtained to the proposed is an adhesive composition used for electrostatic napping of velvet flax with Viscose nap. The composition includes: mash; Polyvinyl acetate emulsion125 Thermosetting resin urea-formaldehyde condensate smolymetazin45 Catalyst (, 50% ammonium nitrate solution) 5 Cz However, the composition does not provide sufficient water resistance of electrofloated materials. In addition, the resulting materials have an increased rigidity, the purpose of the invention is to increase water resistance and reduce the rigidity of electroflocking materials. It is achieved that the adhesive composition, including a water emulsion of a vinyl acetate polymer and a thermosetting resin, holds as a thermosetting resin alkaline condensation of the alkylresresin il silor resorcinol formaldehyde resin with formaldehyde, taken in a ratio of 1.4-3.3: 1 as an aqueous emulsion of a vinyl acetate polymer emulsion of a vinyl acetate-ethylene homo- or copolymer, dibutyl maleate or an emulsion - with the following composition: MACH: Specified aqueous emulsion of vinyl acetate polymer on a dry matter 100 An alkaline condensation product of a pillow-type alkyl resorcinol or resorcinol formaldehyde resin with formaldehyde taken in a ratio of 1.4-3.3: 1 2.1-7.3 Water 103.9-115.2 The following emulsion vinyl acetate-containing polymers can be used: plasticized and non-plasticized emulsion of vinyl acetate homopolymer (GOST 18992-73) i of vinyl acetate copolymer with dibutyl maleinate of grade C-135 TU 6-10-1079-70; emulsion of ethylene copolymer with vinyl acetate with an ethylene content of 8-12% of the brand SVED-10, TU 6-05-1898-80. As a thermosetting resin can be used. Novolac Alk resorcinol-formaldehyde Sm-brand SF-280 1TU-6-05-1544-77), the condensation product of alkyl-1 (alkyl resorcinol) fraction of shale phenols and resorcinol with formaldehyde in ethyl alcohol, ethylene glycol and an aqueous alkali solution in the presence of lead acetate catalyst; dry residue 57%, viscosity 8-30 s for VZ-1, pH 8.5-7.5; Novolac resorcinol formaldehyde resin grade SF-282 TU 6-05-120-2-75 - condensation product of resorcinol with formaldehyde in the environment of ethyl or butyl alcohol, ethylene glycol; dry residue 65%, 1 - 10-30.c, according to VZ-1, pH-7.5-8.5. If necessary, dyes, plasticizers, fillers, stabilizers and other ingredients can be added to the glue. Example. The preparation of the adhesive is carried out in two stages (synthesis stage I, resins, stage 11 — preparation of adhesive). At stage 1, a thermostated three-necked flask with a capacity of 250,500 ml, equipped with a stirrer, is poured in an amount of SF-280 or SF-282 resin weighed to 0.01 g, formalin and alkali in the form of a 10% solution. Resin condensation is carried out at $ 202 s for 15-45 minutes. Then (11th stage) with stirring, the necessary amount of emulsion, vinyl acetate-containing polymers is poured into the flask. The mixture is stirred for 15 minutes, then poured into a container for use. The number of components is believed according to the calculation of Tables 1 and 2). Next, samples of electroflocking materials are prepared using a capon pile 3 mm long with a THICKNESS of 2.22 tex with a field strength of 4-5 kV / cm and a glue thickness of 0.6-0.8 mm, as well as with a pile. 0 mm in length, adhesive thickness 0.3-0.5 mm. Drying and heat setting glue - 7 minutes at 95 ° C; 45 min at 140 ° C. Samples. ElectroProperties of electro-flocked materials are subjected to pile fasteners, for samples with a pile length of 3 mm, which is determined as the average of 10-15 measurements of the force required for a single fiber of the samples. Dp samples with a pile length of 0.5-1.0 mm for resistance to abrasion X (Hickle) measured on the device IT-3. I wear down (element - staple cloth, load 3 kg. The stiffness of the materials is measured on the device ПЖУ-12М. The obtained data are presented in Tables 1 and 2. IT а. 6 l and c 1

PVA: 1

: SVED-10 1: 1

S-135

C-135 9: 1

1: 1

1:99

1.5: 1

S-135

SVED-10 .1: 1

Pva:

: SVED-10:

S-135

1: 2: 1

1: 0.02:

: one

SVED-10 - nitrate

PVA-125, methasin 45 ammonium - 0.45

30Q.

3.5

22.0

0, |

GB

EG

S,

R

WITH

Sh

E

The proposed composition can be used not only for the production of electrofloated carpets, but also electroflocking. -. high quality zamny, provides the best quality; the use of a mixture of emulsions, in which there is an emulsion of a copolymer of ethylene with PVA and an alkylresorcin formaldehyde resin of the SF-280 brand.

The proposed glue provides for a firm fixing of the pile in the wet state from 10 to 26.5 gf / vol., In the dry state - from 20 to 54 GS / ox, resistant to abrasion of suede in the wet with; from 800 to 2800 cycles. that is far superior to the famous glue. At the same time, the proposed glue contains significantly less thermoactive resin (up to 10 wt. Parts) therefore the material has a lower hardness Tbto (160-220 g for carpets and 9-14 g for suede versus 300 g and 26 g for known glue.

The proposed adhesive composition makes it possible to obtain electro-flocked materials (., Suede) of high quality. It is most effective to use it for the manufacture of electroflocking materials subjected to final finishing (printing, antistatic hazard-repellent treatment}, since, due to its high water resistance, the quality of the material after finishing (usually wet treatment) is maintained at a sufficiently high level. The use of this composition in the production of electroflocked materials eliminates the explosion and fire hazard of production, improves the sanitary and hygienic working conditions, and allows expanding the range of flocked carpets and suede through printing and other water treatments.

The use of a composition for gluing or duplicating fabrics, artificial leather skin, provides waterproof adhesive based on a cheap, affordable, fireproof, water-based adhesive.

Claims (1)

GLUE COMPOSITION, comprising an aqueous emulsion of vinyl acetate polymer, a thermosetting resin, which is based on the fact that, in order to increase the water resistance and reduce the rigidity of electroflocked materials, it contains as a thermor ' active resin is the product of alkaline condensation. new-wound alkylresorcinol- or resorcinol-formaldehyde resin with formaldehyde, taken in a ratio of 1.4-3.3: 1, as an aqueous emulsion of vinyl acetate polymer, an emulsion of a homo- or copolymer of vinyl acetate with ethylene, dibutyl maleate or a mixture of emu sy in the following ratio of components, in parts by weight: The specified aqueous emulsion of vinyl acetate polymer (on dry matter) The alkaline condensation product of novolac alkylresorcinol or resorcinol formaldehyde resin with formaldehyde, taken in the ratio 1.4-3.3: 1 2.1-7uZ Water 103.9-115, 6,600,101 ’ns>