SU564323A1 - Damp-proof paste - Google Patents

Description

one

The invention relates to compositions based on synthetic latex, it can be used in the manufacture of mastics used for insulating and gluing building structures, such as concrete, wood, asbestos cement, etc.

Widely known are hydro-insulated latex mastic based on latex and various additives to protect building structures and structures 1.

The closest in technical essence to the invention is the composition of waterproofing mastic used to coat building structures, including latex butadiene oil (or vulcanized latex butadiene styrene), sodium aluminate, water glass, antioxidant neozone D (phenyl-naphthylamine) , pigment and water 2.

However, the known composition has insufficient water resistance. So, for example, when the coating has been exposed to water for one month, the water absorption is 12-30%.

The purpose of the invention is to increase the drain mastic. The goal is achieved by the fact that the composition of the waterproofing mastic, including butadiene-latex (or vulcanized butadiene-latex latex), sodium aluminate, water glass, phenyl naphyllamp (anti-age neo-D), pigment and water, contains sulfate, sulfate (neosongel darogel D), pigment and water, and contains sulfate. in the following ratio of components (in wt.%):

Styrene butadiene

latex64-68

Sodium aluminate 19.2-21.5

Liquid glass1.09-1.17

Ammonium sulfate 4.1-4.5

Phenyl, -Nafta1U amine0, 62-0.64

Pigment: 0.05-0.1

Water the rest.

Example. Mastic GotsF t as follows.

A portion of latex is divided into two equal parts. One part of the latex is mixed with liquid glass, with 25% -Hbrtvi aqueous pacTw

ammonium sulfate thief, with additives (antioxidant, pigment), water, another portion of the latex weighed mixture is mixed with an aqueous solution of sodium aluminate and water. Both parts are joined together and mixed thoroughly.

In tab. 1 shows examples of the formulations of the proposed mastic, in table. 2 - phyiCo-mechanical properties of mastics, prepared according to these recipes, and mastic known.

As can be seen from the table. 2, water absorption of mastic P9 of the invention is reduced by 3 times compared with the water absorption of a known mastic in the manufacture of mastic on serial latex

GKC 65 GP, and when used for this purpose vulcanized latex SKS 65 GP, the water absorption of the coating decreases by a factor of 8 in comparison with the prototype; the rest

The physicomechanical properties of films from the proposed mastic are practically not deteriorated. The coating of mastic according to the invention has adhesion to the concrete surface in the same range as the adhesion of the coatings to. the basis of the known mastic (3-5 kg / cm 2).

When using the proposed mastic for waterproofing, the economic effect ({the activity increases by about 1.5 times compared with the effectiveness of the limestone of mastic by reducing the consumption of the i31 of the material while simultaneously increasing its quality.

Table 1

SCS rubber latex

65 ha (48%)

(styrene butadiene)

Vulcanized latex SCS 65 W (48%)

JipOHHTHTH prc limit

rarefaction, kgf / cm

Relative lengthening

%

Residual elongation

%

Water absorption, weight. %

66

64

66

48,735D45,344.0

310370260490

2521. 1923

Claims (2)

9,09,18,8 .1,5 5 Claims of the invention Hydro-ethylene mastic, including styrene-butadiene latex, aluminate. sodium, water glass, phenyl-P-naphthyl-g amine, pigment and water, which is also distinguished by the fact that, in order to improve water resistance, it additionally contains ammonium sulfate at the following ratio of components (in wt.%): .Y Butadiene Styrene latex Sodium aluminate 19.2-21.5 5643 3 6 Liquid glass 1.09-1.17 Phenyl-naphthylamine 0.62-0.64 Ammonium sulfate 4.1-4.5 Pigment 0.05-0, 1 Water Else Sources of information taken during the examination: 1. Japan, patent No. 135411/67, cl. 25 NO 22.1, 1967. 2. France, patent no., Cl. C O8 d 7 / OO, 1972.