A method of obtaining a composition for waterproofing

 

(57) Abstract:

Use: manufacturing technology waterproofing compounds for waterproofing various porous materials: pulp and paper products, timber, building stone, and other inventive alkylsilane sodium or potassium mixed with phosphate and/or boric acid for 1-25 minutes to a pH of 3-9. Then the mixture is added sodium silicate or potassium in an amount to provide a pH of the target product is equal to 12-1. As inorganic phosphoric acid is used and/or boric acid. 4 C.p. f-crystals, 1 table.

The invention relates to a process of manufacturing a water-repellent composition for waterproofing various porous materials, mainly for the processing of building stone, wood, and for impregnation of the pulp and paper products, for example, cardboard.

A method of obtaining a binder on the basis of inorganic alkali metal silicate in the form of hydrogels by mixing sodium silicate with hydrogel SiO2and water with subsequent metered addition to the mixture of the silicone and curing of the resulting composition to a complete hydrolysis of silicone in it [1 the AET sufficient water-repellent properties.

The closest analogue of the present invention is a method of obtaining a composition for waterproofing by mixing alkylsilane alkali metal, water-soluble alkali metal silicate and an inorganic acid [2]

According to this method, first mix alkylsilane alkali metal with a water-soluble alkali metal silicate by condensation with getting organosilicate sodium. Then the last is treated with an inorganic acid, mainly sulfuric, to a pH of 3-6. Then filter out the excess inorganic salts, mainly sodium sulphate, it is removed, and the resulting organochlorine sodium, having a pH of 3-6, subjected to profound dehydration at temperatures above 300oAnd pressure with the formation of a gel.

This method multistage mixing components, filtration of water-insoluble salts, evaporation of water, obtaining a gel dissolution of the gel in an organic solvent), requires a considerable expenditure of energy and time consuming. In addition, the obtained gel-like composition with a pH of 3-8 allows gidrofobizirovan materials, such as pulp and paper products paper and paperboard, tissue, bentonite film, only from the surface with the formation of the m them water-repellent properties to mass for a long time, that limits the scope of application of water-repellent only for the manufacture of high-temperature insulating coatings due to the fragility and forced to perform periodic processing of materials after a certain period of time.

New technical result from the use of the present invention is to simplify the process by reducing the stages of preparation of the composition and increase the depth of impregnation materials provide hydrophobic properties for the long term and expand the field of use of the composition.

This technical result is achieved in that in the method of making a composition for waterproofing by mixing alkylsilane alkali metal, water-soluble alkali metal silicate and an inorganic acid in an aqueous medium, according to the invention, first mix alkylsilane alkali metal with an inorganic acid, followed by keeping the mixture in the course of time, providing a pH 3-9, and then the mixture is added an alkali metal silicate in an amount to provide a pH of the target product 12-14.

Keeping the mixture is carried out in a period of 5-25 minutes

To="ptx2">

As the alkali metal silicate used sodium silicate or potassium.

As inorganic phosphoric acid is used and/or boric acid.

Can be used and other inorganic acids such as hydrochloric, sulfuric, nitric, etc. depending on the specific destination of the objects of waterproofing.

Thus, in the proposed method specified blending operation is carried out in one apparatus, that is actually the way a single stage.

Thus by changing the sequence of mixing is the change in pH of the intermediate and target products, which causes the shift of the chemical equilibrium to obtain a homogeneous solution, capable of impregnation of the processed materials to the desired depth. This in turn contributes to a guaranteed long lasting.

The method is as follows. In a container with a stirrer pour water, then introduced with stirring, methyl - or ethyldihydromorphinone sodium or potassium. Then add inorganic acid under stirring until complete disappearance of the milky color of the solution for 5-10 minutes Just received the Lee of potassium in a quantity providing the pH of the target product 12-14 and stirred until a complete clarification of the solution. The finished solution is loaded into the container and tightly sealed. The present invention is illustrated by the following examples.

Example 1. Obtaining a composition for waterproofing carry out the above described process flow. The mixture of methyldihydromorphine sodium phosphoric acid was incubated for 25 min to ensure pH 9, then add sodium silicate to obtain a pH of the composition of 14.0.

The resulting composition is characterized by the following qualitative and quantitative characteristics, g/l: methyldihydromorphine sodium 37,8; sodium silicate 0,19; phosphoric acid 0,3.

Then the obtained hydrophobic composition experience by drawing on cardboard, drying the coating and definitions hydrophobic properties. The test results are presented in table.1.

Example 2. The method is carried out analogously to example 1, but a mixture of ethyldihydromorphine sodium phosphoric acid was incubated for 20 min to ensure a pH of 6.5, then add sodium silicate to obtain a pH of the composition to 13.6.

The resulting composition is characterized by the following qualitative and quantitative charactersandy hydrophobic composition experience by applying it to the cardboard, drying of the coating and definitions hydrophobic properties. The test results are presented in table.1.

Example 3. The method is carried out analogously to example 1, but a mixture of methylhydrosiloxane sodium phosphoric acid was incubated for 20 min to ensure a pH of 7.2, and then add sodium silicate to obtain a pH of the composition to 13.2.

The resulting composition is characterized by the following qualitative and quantitative characteristics, g/l: methyldihydromorphine sodium 18,9; sodium silicate 5,85; phosphoric acid 3,14.

Then the obtained hydrophobic composition experience by drawing on cardboard, drying the coating and definitions hydrophobic properties. The test results are presented in table.1.

Example 4. The method is carried out analogously to example 1, but a mixture of methyldihydromorphine sodium phosphate and boric acid was incubated for 5 min to ensure a pH of 3.2, then add sodium silicate to obtain a pH of the composition 12,4.

The resulting composition is characterized by the following qualitative and quantitative characteristics, g/l: methyldihydromorphine sodium 37,8; potassium silicate 1,7; phosphoric acid 9,43; boric acid 6,0.

Then the obtained hydrophobic status test is presented in table.1.

Example 5. The method is carried out analogously to example 1, but a mixture of methyldihydromorphine sodium phosphoric acid withstand 6 min to ensure pH 3.0, and then add sodium silicate to obtain a pH of the composition to 12.0.

The resulting composition is characterized by the following qualitative and quantitative characteristics, g/l: methyldihydromorphine potassium 37,8; sodium silicate 5,85; phosphoric acid 18,8.

Then the obtained hydrophobic composition experience by drawing on a building stone, drying the coating and definitions hydrophobic properties. The test results are presented in table.1.

The analysis of table.1 shows that the hydrophobic effect achieved by the objects (cardboard, building stone) as they are processed water-repellent composition obtained by the proposed method reaches 1.

Define achieved the hydrophobic effect by applying drops of water on the treated and dried surface, and comparing the time of evaporation of water drops over time, evaporation on the control substrate (glass substrate). If there is no time difference in evaporation of the water droplets with the test and control materials believe that made the hydrophobic effect equal to 1.0.

2. The method according to p. 1, characterized in that the curing of the mixture is conducted for 5 to 25 minutes

3. The method according to p. 1, characterized in that as alkylsilane alkali metal use methyl or metildigoxin sodium or potassium.

4. The method according to p. 1, characterized in that the alkali metal silicate used sodium silicate or potassium.

5. The method according to p. 1, characterized in that as inorganic phosphoric acid is used and/or boric acid.

 

Same patents:

Paper weight // 2042005
The invention relates to the pulp and paper industry, in particular the production of various packaging paper, cardboard, and fiberboard, and can be used mainly for the production of fluting and cardboard for flat layers of corrugated material

The invention relates to the pulp and paper industry, and in particular to compositions for sizing fibrous materials, in particular cardboard, bags and wrapping paper

The invention relates to water-soluble polyalkyleneglycol, polyaminoamide containing in its structure epoxypropyl, galogenirovannyie groups used as reagents for the cationization of starch used for the processes of flocculation and hardening of paper in the pulp and paper industry

The invention relates to solu silicic acid and method for producing paper using this Sol

Cigarette paper // 2071520

The invention relates to the technology of making paper-the basics and allows to increase its strength in dry and wet conditions, to reduce the fragility obtained on the basis of the protective film

The invention relates to the pulp and paper industry, in particular the production of cushioning and insulating materials, and may be used in the manufacture of structural protective coating material for thermal insulation

The invention relates to the pulp and paper industry, in particular the production of cushioning and insulating materials, and may be used in the manufacture of structural protective coating material for thermal insulation

The invention relates to compositions of coatings lining, increasing the thermal radiation from the masonry, and can be used for the electric heating furnaces

The invention relates to construction materials and is intended for the manufacture of fire retardant coating wood

FIELD: application of protective coats on inner surfaces of cast-iron pipes and pipe fittings, including high-strength cast iron with globular graphite; erection of water supply systems.

SUBSTANCE: proposed composition is used for pipes at large curvature of walls (inner diameter of 100-400 mm) which are used in erection of water supply systems, both for potable water and other non-aggressive aqueous media. Proposed concrete composition includes Portland cement ПЦ500-ДО, bank-run sand of 0.063-2 mm fraction and M= 1.55-1.9, potassium permanganate and superplasticizing agent C3 and/or modifying agent Linamix 73P-1 or Relamix and water at the following ratio of components, mass-%: Portland cement, 31.25-33.51; bank-run sand, 50.0-53.266; potassium permanganate, 1.67·10-5-5.87·10-5; superplasticizing agent C3, 0.09-1.06; C3 and linamix 73P-1, 0.09-1.06; Linamix 73P-1,0.0840.13; Relamix, 0.067-0.146; the remainder being water. Fine-grained concrete composition may additionally contain up to 3.2 mass-% of dry complex additive with sand of 0.05-0.16 mm fraction, Portland cement and superplasticizing agent at ratio of 2.24 : 0.95 : 0.01. Coats made from such composition acquire enhanced early flexural and compressive strength 3-4 h after heat and moisture treatment and final strength after 28 days of treatment.

EFFECT: enhanced efficiency and strength of coats.

2 cl, 1 tbl, 5 ex

FIELD: application of coats on surfaces possessing durable elasticity and high tensile strength.

SUBSTANCE: proposed composition includes binding component (i) containing at least 25 mass-% of calcium aluminate; binding component may contain one or several fillers in form of particles lesser than 10 mass-% of calcium sulfate in terms of mass of binding component; binding component also contains aqueous emulsion (ii) of organic polymer. Ratio of amount (ii) to (i) is so selected that ratio of mass of polymer solid phase ranges from 0.5:1 to 10:1, preferably from 0.6:1 to 2.5:1 Binding composition includes also dispersible organic polymer (iii); ratio of mass of this polymer to mass (i) ranges from 0.5:1 to 10:1, preferably from 0.6:1 to 2.5:1. Binding component (i) preferably contains fiber for enhancing tensile strength of coats made from hardening composition but not exceeding 5 mass-% of binding component (i). Specification describes method of production of hardening composition and method of application of such composition.

EFFECT: durable elasticity of coats and high tensile strength.

12 cl, 2 dwg, 6 tbl

FIELD: manufacture of building artificial stone non-fired articles.

SUBSTANCE: proposed method includes preparation of articles, application of slip made from ceramic glazes or enamels on their surfaces, drying the layer and attachment of it by fusion; prior to application of slip, surfaces of articles are impregnated with sodium chloride solution at concentration of 10-26.43% and are dried. Sodium chloride solution is used at temperature of 25-50°C.

EFFECT: enhanced resistance of glaze coats to peeling at low temperature.

1 ex

Up!