Water-diluting composition for preparing cover by electrolytic precipitation method

FIELD: paint and varnish materials.

SUBSTANCE: invention relates to water-diluting paint and varnish covers preparing by the electrolytic precipitation method on cathode and can be used in preparing protective covers. The composition comprises the following components, mas. p. p.: 60-70% solution of epoxyamino-rubber adduct modified with melamine-formaldehyde resin and neutralized partially with formic acid in the mixture of ethylglycol acetate and butanol, 190-210; acetic acid, 2-16; mixture of epoxydiane resin of molecular mass 350-600 Da and the content of epoxy groups 14.5-24.8% with xylene taken in the ratio = 4:1-18-22, mixture of fluoroplastic F-4D suspension with distilled water taken in the ratio = 1:6-800-1600. Covers made of the proposed composition are stable against temperature drops, hydrogen and saline mist.

EFFECT: improved and valuable properties of composition.

1 tbl

 

The invention relates to the field of waterborne coatings produced by the method of deposition on the cathode, and can be used to produce coatings with high protective properties.

Known enamel VMA-5194 [THE 6-10-1903-83], which includes a copolymer malaysiaand linseed oil with styrene, Teflon, soot and water. The composition is applied by electro-deposition on the anode. Also known ground-enamel VEP-0190 [THE 6-10-11-525-7-85], which is a dispersion of pigments in the solution neutralized katiana-active resin EEC); the Composition is applied by electrodeposition on the cathode. The coating obtained on the basis of these compositions, peel off when the temperature difference in the range from minus 18°C to + 150°destroyed during testing in the environment of hydrogen in a vacuum oven at 100°and do not provide protection from corrosion when exposed to salt fog.

Closest to the invention to the technical essence is a composition comprising a 60-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct, modified melamine-formaldehyde resin, acetic acid, carbonitride, ethyl cellosolve and water [RF patent №1764307, CL 09 D 5/44].

However, the coating obtained on the basis of this composition, also from lavaute at temperatures in the range from minus 18° C to + 150°destroyed during testing in the environment of hydrogen in a vacuum oven at 100°and do not provide protection from corrosion when exposed to salt fog.

The present invention was the creation of compositions provide coatings on the surface of the permanent magnets of the alloy Nb-Fe-B. the solution of this task, you may receive technical results, consisting in the absence of peeling of the coating when exposed to temperatures of minus 18°C to + 150°With; no destruction of the coating in the environment of hydrogen at temperatures from + 20°C to + 200°With; no corrosion when exposed to salt fog for 56 hours.

These technical results are achieved by the fact that in a waterborne composition comprising 60-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct, modified melamine-formaldehyde resin, and acetic acid, have been added to the mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1 and the mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60 in the following ratio of components, parts by weight:

60-70% solution in a mixture of ethylpyrazine and190-210
butanol, partially neutralized formic
acid, epoxiconazole adduct,
modified melamine-formaldehyde resin
acetic acid16-20
the mixture Dianova epoxy resin with a molecular18-22
mass 350-600 and content of epoxy
groups of 14.5-24,8% with xylene in the ratio of 4:1

the mixture of the suspension of PTFE f-4D

with distilled water in the ratio 1:60 800-1600

As a result of introduction into the composition of the mixture Dianova epoxy resin (molecular weight 350 to 600 and the content of the epoxy groups of a 14.5 24.8 per cent) with xylene in the ratio of 4:1 and the mixture of the suspension of PTFE f-4D with distilled water in the ratio 1:60 was obtained composition providing coatings on the surface of the permanent magnets of the alloy Nb-Fe-B, resistant to temperatures from minus 18°C to + 150°With; the influence of hydrogen and salt fog.

For experimental verification were prepared with 5 songs (see table).

In the experimental work were used the Vanir:

is a water - borne chattnooga resin EEC-M (TU 6-10-11-519-7-85), representing 60-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct modified melamine-formaldehyde resin;

is the suspension brand PTFE f-4D (TU 6-05-1246-81), which is a suspension of fine powder PTFE 4D (fine modification of polytetrafluoroethylene in water, stabilized by surfactants (usually OP-7);

acetic acid GOST 18270-72;

- xylene THE 6-09-3825-88;

- Dianov epoxy resin grade ED-20 (GOST 10587-84) with molecular weight 452 and the content of the epoxy groups of 19%.

Table
The compositionResistance
No.ConcentrationDropHydrogenSalt
PMComponentpartstemperature20°100°fog
1234567
160-70% of the process is a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct modified melamine-formaldehyde resin.180Peeling coatingDestruction of the coatingCorrosion on the surface after 36 hours
Acetic acid.15
The mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1.17
The mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60.700
260-70% solution in a mixture of ethylpyrazine and butanol partially neutralized with formic acid epoxiconazole adduct modified melamine-formaldehyde resin.190Appearance of the coating without modificationAppearance of the coating without modificationAppearance of the coating without modificationAfter 56 hours appearance of the coating and without the changes
Acetic acid.16
The mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1.18

1234567
The mixture of the suspension of PTFE f-4D with distilled water in the ratio 1:60800
360-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct modified melamine-formaldehyde resin.200Appearance of the coating without modificationAppearance of the coating without modificationAppearance of the coating without modificationAfter 56 hours appearance of the coating without modification
Acetic acid.18ÈA;
The mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1.20
The mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60.1200
460-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct modified melamine-formaldehyde resin.210Appearance of the coating without modificationAppearance of the coating without modificationAppearance of the coating without modificationAfter 56 hours appearance of the coating without modification
Acetic acid.20
The mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1.22
1234567
The mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60.1600
560-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct modified melamine-formaldehyde resin.220Peeling coatingDestruction of the coatingCorrosion on the surface after 20 hours
Acetic acid.21
The mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1.23
The mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60.1700ÈA;
P R O T O T P60-70% solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid, epoxiconazole adduct, modified melamine-formaldehyde resin.188Peeling coatingDestruction of the coatingCorrosion on the surface through 15,5 hours
Acetic acid.2
The ethyl cellosolve.30
Carbonitride.27
The distilled water.753

Waterborne composition was prepared as follows: the resin EEC-M under stirring was added acetic acid, the mixture Dianova epoxy resin with xylene in the ratio of 4:1 and the mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60.

The coating was obtained by electrodeposition at the cathode of the working solutions of the composition the samples of the alloy Nb-Fe-B when the voltage 100-250 V and time 15-120 C. The solution temperature 15-25°C, pH 4,0-6,5.

The cured coating was performed in a drying Cabinet at a temperature of 180-250°C for 30-60 minutes

Resistance to the effects of temperature difference was determined by aging for 1 hour at minus 18°C, followed by exposure at plus 150°C for 1 hour.

Resistance to the effects of hydrogen was determined by exposure in a vacuum furnace filled with hydrogen to atmospheric pressure, at 20°C for 1 hour and at 100°C for 1 hour.

Resistance to the effects of salt fog was determined by the shutter speed in the camera is sprayed with a 5% aqueous solution of sodium chloride at 20°C for 56 hours.

The results are shown in the table.

From the table it follows that only when the claimed combination and the mixing ratio of the composition (examples 2, 3, 4) is ensured by the absence of peeling of the coating when exposed to temperatures of minus 18°C to + 150°With; no fracture of the coating in the environment of hydrogen and corrosion resistance when exposed to salt fog for 56 hours.

Thus, it is experimentally shown that the solution of this problem is achieved only when the claimed combination of features.

The use of the inventive waterborne composition allows to obtain coatings with the high operational capabilities.

Waterborne composition to obtain a coating method for electrodeposition on the surface of the permanent magnets of the alloy Nb-Fe-B, which have a 60-70%solution in a mixture of ethylpyrazine and butanol, partially neutralized with formic acid epoxiconazole adduct, modified melamine-formaldehyde resin, and acetic acid, characterized in that it additionally contains a mixture Dianova epoxy resin with a molecular weight of from 350 to 600 and the content of the epoxy groups of 14.5-24,8% with xylene in the ratio of 4:1 and the mixture of the suspension of PTFE f-4D with distilled water in the ratio of 1:60 in the following ratio of components, parts by weight:

60-70% solution in a mixture of ethylpyrazine and
butanol partially neutralized
formic acid epoxiconazole
adduct, modified melamine-
formaldehyde resin190-210
Acetic acid16-20
The mixture Dianova epoxy resin with a molecular
mass 350-600 and content of epoxy
group is a 14.5 24.8 per cent with xylene in the ratio of 4:1 18-22
The mixture of the suspension of PTFE f-4D with distilled
water in the ratio 1:60800-1600



 

Same patents:

FIELD: electrochemical processes.

SUBSTANCE: object of invention is plating forming rolls designed for rolling electrode bands. Composition contains varnish KCh-0125, ammonia, 50% fluoroplastic suspension F-4D, filling compound composed of silica, ethanol, and anionic surfactant-containing technical product at their ratio 10:(0.5-15):1.0, and water.

EFFECT: enabled plating of coating showing high wear resistance and low adhesion for rolled materials.

1 tbl

The invention relates to the field of waterborne coatings obtained by electrodeposition at the cathode, and can be used to produce decorative coatings with high performance properties

The invention relates to compositions for the antifriction metals and chemically resistant coatings based on PTFE by cathodic deposition

The invention relates to compositions for the preparation of hydrophobic coatings by cathodic deposition and can be used when you need the coverage the minimum thickness (not more than 10 μm), for example, when the protection of condenser tubes of heat exchangers made of copper alloys, where necessary drip condensation of the steam

The invention relates to a thermosetting polymer composition used in paint systems cathodic electrodeposition

The invention relates to a method of coating conductive electric current substrates and can be used especially in the automotive industry

The invention relates to the production of colored, transparent organic coatings applied by anodic deposition on a conductive surface and can be used in electronic, radio, aviation, automotive industry, mechanical engineering, to obtain decorative coatings in the production of consumer goods, etc

The invention relates to catalyzed with water-dilutable upon protonation, cationic lacquer binders which contain bismuth salt of aliphatic acids hydroxycarbonate

The invention relates to the field of application of non-stick, anti-adhesion, anti-corrosion coating by way of heterologously on a hard surface and can be used in the manufacture of chemical equipment, utensils, household appliances and so on

The invention relates to the production of colored organic coatings on conductive surfaces by anodic electrodeposition and can be used in engineering, in radio, electronics, aviation, automotive and other industries, including for obtaining decorative coatings on consumer goods

FIELD: rubber industry; production of elastomer compositions on base of ethylene-propylene-diene rubber; production of roofing materials for hydraulic insulation of buildings, bridges, tunnels, roof coats.

SUBSTANCE: proposed rubber mix contains the following components: ethylene-propylene-diene rubber, butyl rubber or regenerate on base of butyl rubber, anti-oxidant, plasticizing agent (paraffin, mineral oil, chloro-paraffin), commercial carbon, chalk and/or kaolin and bitumen, colophony or benzoic acid, if necessary. Rubber mix may also contain Captax (rubber accelerating agent), thiuram or zinc ethyl diethyl dithiocarbomate, antimony trioxide, aluminum hydroxide, stearic acid and zinc oxide at definite ratio. Rubber mix is prepared on standard equipment of rubber industry.

EFFECT: enhanced resistance to burning and frost.

4 cl, 4 tbl

FIELD: protective coatings.

SUBSTANCE: invention aim is preparation of coatings providing long-term protection of chemical shop equipment under alternate alkali and acid solution action conditions. Protection of equipment, according to invention, is provided by polysulfide sealant having prolonged durability owing to lowered permeability and swelling ability of cured coating material on contact with water and aqueous acid and alkali solutions. Coating is formed by consecutively depositing curable primer and transition adhesive layer onto cleaned metal followed by layer-by-layer application and curing of polysulfide sealant. On the surface of cured coating, additional anti-diffusion polymeric layer based on chlorinated polyvinylchloride resin is formed.

EFFECT: achieved long-term protection of equipment.

FIELD: chemical industry; production of polymeric compositions on the epoxy basis.

SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to production of polymeric compositions on the epoxy basis. The invention offers a composition for protection of internal surfaces of fuel tanks-caissons of aircrafts made out of aluminum alloys against corrosion at the long-term usage in a fuel medium and it also may be applied to protect interior and exterior surfaces of means of transport and structures made out of magnesia alloys and steel. The offered composition for application as a metal coating contains: in the capacity of a polymeric binding - epoxydianil resin or epoxyorganosilicon resin; in the capacity of a modifying agent - polysulfide or butadieneacryl nitrile carboxylated rubber; as a hardener - organosilicone amine - γ-aminopropyltriethoxy silane, 1-amino hexamethylene -6- hexamethylenetriethoxy silane or a condensation product of γ-aminopropyltriethoxy silane, a mineral filler - barium sulfate, aerosil, talcum, titanium dioxide or their mixes; in the capacity of abscopal pigments - strontium chromate, barium chromate, chromium phosphate or their mixes; organic solvent - xylene, acetone, butyl acetate, ethyl cellosolve or their mixes at the following components ratio(in mass shares): polymeric binding - 100, modifying agent - 9-50, a hardener - 5-80, a mineral filler - 25-105, inhibiting pigments - 30-140, organic solvent - 5-200. The offered composition allows to produce a fuel and a water-resistant coating with high adhesive and physical-mechanical characteristics, fungi-resistant, protective features ensuring at small thickness (a small weight of the coating) the long-term protection of the fuel tanks-caissons, which are operating in the liquid hostile environments at the temperature difference from-60°C up to (+100-150)°C.

EFFECT: the invention ensures production of a fuel and a water-resistant coating with the high adhesive and physical-mechanical characteristics, fungi-resistant, protective features.

4 cl, 12 ex, 3 tbl

FIELD: building materials.

SUBSTANCE: invention relates to latex-base composites used for making protective covers on polymeric materials, metal, wood, splint-slab and wood-fiber plates, concrete, ceramics, cardboard, paper and other materials. The composition comprises the following components, wt.-%: acrylate latex, 30.0-80.0; butadiene-styrene soft latex, 10.0-19.0; butadiene-styrene rigid latex, 5.0-9.0; filling agent, 12.0-21.0; pigment, 0.5-6.5; carbamide, 0.5-2.0; 10-50% alkali an aqueous solution, 0.1-2.0, and water, the balance. Invention provides preparing the cover that shows high stability under atmosphere conditions, climatic factors and wetting abrasion. The cover can be applied on materials by preliminary applying the composition by film layer on backing and the following thermal transfer of this layer from backing on surface to be covered.

EFFECT: improved, enhanced and valuable properties of composition.

2 tbl

The invention relates to the field of waterborne coatings obtained by electrodeposition at the cathode, and can be used to produce decorative coatings with high performance properties

The invention relates to the field of building materials and can be used as a protective and paint coating of building structures and buildings made of reinforced concrete, brick, slate, wood, etc

The invention relates to construction materials and can be used in the manufacture of finishing works, namely in the manufacture of primers for surface treatment construction products before applying decorative and protective coatings

Paint // 2153514
The invention relates to the field of building materials and can be used for finishing of construction products and building elements and structures

The invention relates to polymeric compositions for coating and is used to protect the trunk gazonefteprovodov and other metal structures from corrosion

FIELD: building materials.

SUBSTANCE: invention relates to latex-base composites used for making protective covers on polymeric materials, metal, wood, splint-slab and wood-fiber plates, concrete, ceramics, cardboard, paper and other materials. The composition comprises the following components, wt.-%: acrylate latex, 30.0-80.0; butadiene-styrene soft latex, 10.0-19.0; butadiene-styrene rigid latex, 5.0-9.0; filling agent, 12.0-21.0; pigment, 0.5-6.5; carbamide, 0.5-2.0; 10-50% alkali an aqueous solution, 0.1-2.0, and water, the balance. Invention provides preparing the cover that shows high stability under atmosphere conditions, climatic factors and wetting abrasion. The cover can be applied on materials by preliminary applying the composition by film layer on backing and the following thermal transfer of this layer from backing on surface to be covered.

EFFECT: improved, enhanced and valuable properties of composition.

2 tbl

Up!