Modifier rust

 

(57) Abstract:

The invention relates to coatings industry, namely, modifiers, rust, used for coating metal surfaces without cleaning them from rust. An object of the invention is to obtain a modifier rust on the basis of activated lignin, which would ensure a high complexing capacity to ions of iron and other metals, would have high anti-corrosion performance. Modifier rust contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition comprising aminecontaining additive, water, optionally containing ammonia, and as aminecontaining supplements use organic aliphatic amerosport, in the following ratio, wt.%: lignin 77,0-87,0, aminecontaining additive - 5,5-10,0, ammonia - 0,5-1,0, water - the rest, and the modifier rust further comprises iron oxide and has the following quantitative composition, wt. %: iron oxide - 1,0-2,0 and activated lignin - rest. table 2.

Izaberete metallicheskih surfaces without cleaning them from rust.

Known modifier of rust, including the activated lignin (lignin treated with 25% solution of ammonium hydroxide in the presence of translesanas ammonium phosphate), hydrocellulose, tartaric acid, natural drying oil, oil, licorice root extract, ethyl silicate and water (A. C. the USSR 841339, CL 09 D 5/12, 1960).

The disadvantage of this modifier rust is that it is not enough to quickly and efficiently converts rust.

Also known powder rust Converter, including lignin, treated with a modifying composition containing aminecontaining additive and water (CPD-1 TU 04.96.74. 5-87, Ukraine - prototype).

The disadvantage of this modifier rust is that it is not enough to quickly and efficiently converts rust.

An object of the invention is to obtain a modifier rust on the basis of activated lignin, which would ensure a high complexing capacity to ions of iron and other metals, would have high anti-corrosion performance.

The technical problem is achieved by the fact. what modifier rust, including lignin, obrabotannoy activating in ceramic containers ceramic balls hydrolytic lignin, processed modifying composition, optionally containing ammonia, and optionally contains iron oxide, and as aminecontaining additives used organic aliphatic amerosport, while the activated lignin has the following quantitative composition, wt.%

Lignin - 77,0-87,0

Aminecontaining additive is an organic aliphatic amerosport - 5,5-10,0

Ammonia - 0,5-1,0

Water - the Rest

and modifier rust has the following quantitative composition, wt.%:

Iron oxide - 1,0-2,0

The activated lignin - Rest

The invention has the following differences from the prototype:

the modifier rust contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition, optionally containing ammonia;

the modifier rust contains iron oxide;

as aminecontaining additives used organic aliphatic amerosport;

- activated lignin has the following quantitative composition, wt.%:

Lignin - 77,0-87,0

Aminecontaining additive is an organic aliphatic aminny composition, wt.%:

Iron oxide - 1,0-2,0

The activated lignin - Rest

This will allow you to get the modifier rust on the basis of activated lignin, which will provide high complexing capacity to ions of iron and other metals, has a high anti-corrosion performance.

Viewed in us patent information the Fund has not found similar technical solutions and technical solutions with these differences.

The claimed technical solution is applicable and will be implemented at the industrial enterprises in 2000

For manufacturing modifier rust took the following components:

Aminecontaining additive, such as monoethanolamine GOST 19234-87 E;

Ammonia GOST standard 9-92;

Iron oxide (Fe2ABOUT3or Fe3ABOUT4) GOST 26318.3-84.

Modifier rust received and used as follows.

EXAMPLE 1.

First got activated lignin by imposing mechanical and chemical loads on lignin, which was accompanied by its destruction with increased mechanical activity dispersible material, which increased the efficiency of all subsequent processan any moisture in amount of 77.0 wt.% served in a ceramic container and activated ceramic balls, when this was added the modifier composition containing the estimated number of aminecontaining supplements organic aliphatic amerosport (5.5 wt.%), ammonia (0.5%) and water (the rest). Activation was carried out at normal temperature and atmospheric pressure. After drying up to 15-17% residual moisture were crushed to particle size of 5-30 μm.

The activated lignin (lignin ACC) is characterized by the following functional groups:

OCH3,% - 4,0-5,3

HE Society.,% - 20,2-21,7

COOH.% - 16,0-17,2

NH2Gen.,% - 8,3-9,1

Modifier rust-based powder activated lignin switchs could feed-ACC was prepared as follows. Lignin activated ACC, containing not more than 15-17% moisture was mixed with iron oxide (Fe2ABOUT3and/or Fe3ABOUT4) in an amount of 1 wt. % (lignin activated ACC - else) and dispersively (pereirae) in ceramic containers ceramic balls for 10-12 hours at a speed of rotation of the drum 40 to 60 rpm. Received modifier rust PDP-ACC (1). The number in parentheses indicates the number of completed example.

Modifier rust is a fine powder with a particle size of 5-30 μm, dark-max is hanicheskih (well-known) solvents. Water extract gives an alkaline reaction - pH of 7.5-8.5.

The resulting modifier rust MCI-ACC (1) used in the manufacture of the priming composition. For this modifier MCI-ACC (1) in an amount of 7.0 wt.% (maybe 5-8 wt.%) added 93 wt.% enamel PF-115. The mixture was thoroughly mixed and applied, for example, manually by brush, carefully rubbing and shading on rusty steel plates Art. 3 with a thick layer of rust thickness of 100-120 μm, was dried and then sprayed the floor is made of 2 layers of enamel PF-115. Drying time at 20oWith was 8-9 hours.

After 10 days of exposure, the samples were placed in hygrostat at a temperature of 40-50oC and 100% relative humidity for 30 days. To assess the protective properties of the coatings used a capacitive-resistive method. The essence of the method consists in periodic variation of capacitance and tangent of dielectric loss angle tg dyed samples using the bridge circuit AC. The value "C" is characteristic of the condition of the coating. The defects of the coating film, the discontinuity of the coating leads to an increase in capacity. Improving the quality of the coating is characterized by the increased capacity . The tests were carried out on the bridge variable is after 30 days of testing in 3% aqueous NaCl solution.

EXAMPLE 2.

Example 2 was performed according to example 1, but changed the proportion participating in this component, receiving modifier rust MCI-ACC (2), and also changed the qualitative composition of the priming composition, which is used obtained in example 2 modifier rust MCI-ACC (2).

EXAMPLE 3.

Example 3 was performed according to example 1, but changed the proportion participating in this component, receiving modifier rust MCI-ACC (3), and also changed the qualitative composition of the priming composition, which is used obtained in example 3 modifier rust MCI-ACC (3).

Table 1 presents examples made in accordance with the invention, compositions of activated lignin based modifier rust and priming compositions obtained by adding custom modifiers rust.

Table 2 shows the properties obtained according to the examples of coatings.

The technical result of the invention is to obtain a modifier rust on the basis of activated lignin, which provides high complexing capacity to ions of iron and other metallogeny lignin, processed modifying composition containing aminecontaining additive and water, characterized in that it contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition, optionally containing ammonia, and as aminecontaining supplements use organic aliphatic amerosport in the following ratio of components of the modifier composition, wt. %:

Lignin - 77,0-87,0

Aminecontaining additive - 5,5-10,0

Ammonia - 0,5-1,0

Water - the Rest

and modifier rust further comprises iron oxide and has the following quantitative composition, wt. %:

Iron oxide - 1,0-2,0,

The activated lignin - Rest

 

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