Tixotropic material for protection of metal surfaces against corrosion

FIELD: chemistry.

SUBSTANCE: invention relates to protective anti-corrosion compositions, representing inhibited oil compositions, intended for protecting metal surfaces, both inside surfaces and bottom, of all types of vehicles against corrosion. Invention relates to tixotropic material for protecting metal surfaces against corrosion, containing hard oil hydrocarbon, plasticiser, corrosion inhibitor, powder-like silicon-containing mineral and organic solvent, additionally containing glycerin ether of tall hard rosin, anti-oxidative additive, zinc phosphate, rheological additive and rheological additive activator, as hard oil hydrocarbon - oxidised bitumen, as corrosion inhibitor - mixture of corrosion inhibitors of anode, cathode and barrier type, as silicon-containing mineral - talc, and as plasticiser - oil-polymeric aromatic resin, with the following component ratio, wt %: oxidised bitumen - 30.0-40.0, oil-polymeric aromatic resin - 2.0-8.5, anti-oxidative additive - 1.0-2.5, corrosion inhibitor of anode type - 2.0-8.5, corrosion inhibitor of cathode type -6.0-10.5, corrosion inhibitor of barrier type -1.0-2.5, powder-like talc - 4.0-7.5, glycerin ether of tall hard rosin - 0.2-1.5, zinc phosphate - 2.0-4.0, rheological additive - 1.0-5.0, rheological additive activator - 1.5-7.0, organic solvent - to 100.

EFFECT: creating efficient tixotropic material for protecting metal surfaces against corrosion.

9 cl, 2 ex, 2 tbl

 

The invention relates to coatings industry, namely to the anticorrosive composition, and is designed for corrosion protection of metal surfaces, both internal and bottoms, and all kinds of vehicles.

It is known that protective coatings include polymeric resins, paraffins, waxes, petrolatum, bitumen, mineral oil, water - and oil-soluble corrosion inhibitors and solvents (Schechter, Y. "Work-conserving lubricants, M., "Chemistry", 1979, s-210).

Known corrosion-resistant composition containing, in wt.%: 10-6 microcrystalline wax, 2.5 to 25 mixture of paraffinic and naphthenic oils, 0.01 to 15 sulfonate, 16-50 asphaltene, 2-25 drying oil, 2-5 naphthenic acid and 3-60 solvent. The composition may contain a dye and pigments (US 3754942, 28.08.73).

Known composition to obtain a corrosion-resistant coatings containing, wt.%: 15-30 asphalt bitumen with penetration 25-35, 20-6 petroleum sulfonate, 4-16 organic adhesive and corrosion inhibitor is a liquid polyamide resin, resin oil, or a mixture thereof. An organic solvent is contained in a quantity sufficient to lower the viscosity, allowing you to apply the composition by spraying (US 4142903, 06.03.79).

Known anticorrosive composition on the basis of paraffin, containing non-oxidized petrolatum with the number of carbon atoms 0-60, oxidized petrolatum with the number of carbon atoms 25-70, salt, alkaline earth metal and oxidized petroleum butter. The composition contains a corrosion inhibitor is a calcium sulfonate and the solvent (Japan's bid 63-20-394 And, publ. 28.01.88).

Known anticorrosive composition (EN 2194066 published 10.12.2002,), taken as a prototype, containing, wt.%: solid petroleum products - bitumen or petrolatum, or ceresin - 30-40, powdered silica of 0.1-10, the plasticizer is an ester of phthalic acid, and 0.5 to 1.5, corrosion inhibitor 1-6, an organic solvent to 100. When the corrosion inhibitor is a mixture comprising vinyltriethoxysilane or phenyltrichlorosilane, cyclohexylamine, rosin soap, additive "MYVOL" on the basis of microbial fat and barium zhelezookisnye pigment, the content of each ingredient is 0.2-1.2 wt.%.

However, this composition can be used for application only in the temperature range from +5 to +40°C, which is quite insufficient for Russia, where winter temperatures can reach -60°C, and summer (in the sun) to exceed +40°C. in Addition, the composition has a low resistance in aggressive environments (resistance to static action of 0,5N solution of sodium chloride at room temperature is 48 hours), and operating temperature range is n coatings authors unchecked and unknown.

The objective of the invention is to provide a corrosion resistant material having a wider operating temperature range wide operating temperature range, high resistance to moisture and the storage stability, lower toxicity to the environment while maintaining high technology.

The technical result is achieved by the fact that the proposed thixotropic material to protect metal surfaces from corrosion, containing solid petroleum hydrocarbon, plasticizer, corrosion inhibitor, powdered silicon-containing mineral, and organic solvent, which according to the invention optionally contains ether of glycerol rosin tall oil, antioxidant additive, zinc phosphate, rheological additive and activator of rheological additives, solid petroleum hydrocarbon oxidized bitumen, as a corrosion inhibitor is a mixture of corrosion inhibitors anodic, cathodic and barrier type as the silicon - containing mineral is talc, and as a plasticizer - aromatic petroleum resin, in the following ratio , wt.%:

oxidized bitumen30,0-40,0
petroleum aromatics the second resin the 2.0-8,5
antioxidant additive1,0-2,5
the anodic corrosion inhibitor typethe 2.0-8,5
the cathodic corrosion inhibitor typeof 6.0 to 10.5
corrosion inhibitor barrier type1,0-2,5
powdered talc4,0-7,5
ether of glycerol rosin tallboy0,2-1,5
the zinc phosphate2,0-4,0
rheological additive1,0-5,0
activator rheological additive1,5-7,0
organic solvent100

At the same time as antioxidant additive material contains Agidol-1 or 4-4-diaminodiphenylmethane, or their mixture in any combinations and ratios.

As an anodic corrosion inhibitor type contains the distillation residues of synthetic fatty acids or synthetic fatty acid, or their mixture in any combinations and ratios.

As and the of hibitor corrosion cathodic-type material contains petroleum calcium sulfonate, or derivatives of 12-hydroxystearic acid, such as calcium stearate or sodium stearate or lithium stearate, or a mixture in any combinations and ratios.

As a corrosion inhibitor barrier type material contains ether alkenylamine anhydride or imidazoline, such as COD-002 or 2-phenylbenzimidazol.

As rheological additives it contains Benton 34, or Benton 38, or Benton 52, or panel B-20, or gidrirovannoe castor oil.

As activator rheological additive material contains ethanol or butanol or propylene carbonate, or butylcellosolve, or their mixture in any combinations and ratios.

As the solvent material contains predominantly white spirit or nefras 150/200.

Mainly stated thixotropic material as antioxidant additives contains Agidol-1 as an inhibitor of corrosion of the anode - type distillation residues of synthetic fatty acids, as a cathodic corrosion inhibitor type - petroleum calcium sulfonate, as a corrosion inhibitor barrier type - ether alkenylamine anhydride, as a rheological additive - Benton-34, as activator rheological additive - butanol as solvent white spirit, in the following ratio, wt.%:

oxidized bitumen33,0-35,0
petroleum aromatic resin5,0-7,0
distillation residues of synthetic fatty acids3,0-5,0
petroleum calcium sulfonate7,5-9,5
ether alkenylamine anhydride1,5-2,0
Agidol-10,5-1,0
ether of glycerol rosin tall0,5-1,0
the zinc phosphateof 3.0-3.5
microtalk6,0-6,5
Benton 342,0-4,0
butanol3,0-5,0
white spirit100

The technical result of the invention, allowing to solve the problem is to provide the ability to generate not flowing with the vertical surfaces of the protective coating of the desired thickness in a single coat with any method of application (airless, combo spray, about the Liv, the brush and the like) in a wide temperature range (-60 to +120°C), the increase in resistance of the coating to corrosive environments, expanding the range of operating temperatures and increase the service life of the coating (from 7 to 30 years depending on operating conditions), as well as the increase of ecological safety of the material due to the reduction of the solvent content.

Example 1

For obtaining of the material took the following components, wt.%: oxidized bitumen grade bn 70/30 GOST 6617-76 - 33,0; aromatic petroleum resin (PS) TU 38.402198-93 - 7,0; distillation residues of synthetic fatty acids (COSGC) THE 38.1071231-89 - 4,5; petroleum calcium sulfonate (additive C-150) GOST 1510-84 - 6.5; ether alkenylamine anhydride (additive-15/41) THE 6-14-866-86 - 1,5; Agidol-1 TU 38.5901237-90 - 1,5; ether glycerol rosin tall THE 13-00281074-162-95 - 0,5; zinc phosphate THAT 23290-002-12588040-95 - 2,5; micro-talc GOST 1984-95 - 6,0; Benton 34 - 5,0; butanol GOST 5208-81 - 2,0; ethanol GOST 17299-78 - 1,5; white spirit GOST 3134-78 - the rest is up to 100%.

The reactor was loaded estimated number of white spirit, which was heated to a temperature of 85°C. In a preheated white spirit portions three times downloaded bitumen with constant stirring and maintaining the temperature of 80-100°C. until complete dissolution of the bitumen and smooth. Then as portions with constant stirring downloaded n is prepolymer resin and the ester of glycerol rosin tall and stirred to obtain a homogeneous mass. Then reduced the temperature of the mass to 60-70°C, consistently with constant stirring downloaded all the additives and inhibitors: C-150, KOSIK, 15/41, Agidol-1, and stirred to obtain a homogeneous mass.

Then downloaded portions of 4-6 visits and with constant stirring, the zinc phosphate, micro-talc and Benton 34 to obtain a homogeneous mass. The resulting mass is homogenized by using, for example, industrial homogenizer brand PWG or repeatedly passed through the filter cell filter material size of 200-300 μm, cooled to a temperature of 40-50°C and loaded it butanol and ethanol. The mass was stirred for 15 minutes and again homogenized for 10 minutes. The finished material was packaged and hermetically Packed in a container.

Properties obtained in example 1 the material presented in table 2, column 1.

In the same way were prepared for the other samples of the material, the composition of which is presented in table 1, and properties are shown in table 2. The composition in the form of mastic may be applied to protect the surface of the airless, or a combined spray, or brush.

To test the protective properties obtained using the proposed material covering a metal plate, covered with a protective material layer of thickness ≈100-300 μm, dried, and placed the Ali in the camera of a 5%salt fog at a temperature (35±2)°C; the other plate was placed into the chamber 98±2% humidity and at a temperature of 40±2°C; one plate was immersed in water at a temperature of 20±2°C; next the plate was immersed in the electrolyte solution (3% NaCl) at a temperature of 20±2°C. is Covered with a protective material of the plate was kept in these environments, and then the coating was removed with a solvent and examined the appearance of the plate on which there should be no corrosion of the metal is only allowed whitening of the surface.

Operating temperature range investigated, surviving covered with a protective material, a metal plate under cyclic change of temperature: when the temperature of -60°C (4 hours), then at a temperature of +20°C (4 hours) and then at a temperature of +120°C (4 hours) and so a few cycles with periodic status checks of metal under a protective coating.

As seen in the table 2 data, the proposed material provides receive coverage, resistant to humidity and salt fog and cyclic temperature changes, resulting in a significant increase in service life cover and effective protection against corrosion. When this material is ready for application in a wide temperature range.

1. Thixotrop the initial material for protection of metal surfaces against corrosion, containing solid petroleum hydrocarbon, plasticizer, corrosion inhibitor, powdered silicon-containing mineral, and organic solvent, characterized in that it further comprises the ester of glycerol rosin tall oil, antioxidant additive, zinc phosphate, rheological additive and activator of rheological additives, solid petroleum hydrocarbon oxidized bitumen, as a corrosion inhibitor is a mixture of corrosion inhibitors anodic, cathodic and barrier type as the silicon - containing mineral is talc, and as a plasticizer - aromatic petroleum resin, in the following ratio, wt.%:

oxidized bitumen30,0-40,0
petroleum aromatic resinthe 2.0-8,5
antioxidant additive1,0-2,5
the anodic corrosion inhibitor typethe 2.0-8,5
the cathodic corrosion inhibitor typeof 6.0 to 10.5
corrosion inhibitor barrier type1,0-2,5
poroshkoobraz the initial talc 4,0-7,5
ether of glycerol rosin tallboy0,2-1,5
the zinc phosphate2,0-4,0
rheological additive1,0-5,0
activator rheological additive1,5-7,0
organic solvent100

2. Thixotropic material according to claim 1, characterized in that as antioxidant additives contains Agidol-1 or 4-4-diaminodiphenylmethane, or their mixture in any combinations and ratios.

3. Thixotropic material according to any one of claims 1 and 2, characterized in that as a corrosion inhibitor anode type contains the distillation residues of synthetic fatty acids or synthetic fatty acids or their mixture in any combinations and ratios.

4. Thixotropic material according to any one of claims 1 and 2, characterized in that as a corrosion inhibitor cathode type contains petroleum calcium sulfonate, or derivatives of 12-hydroxystearic acid, such as calcium stearate or sodium stearate or lithium stearate, or a mixture in any combinations and ratios.

5. Thixotropic material according to any one of claims 1 and 2, characterized in that the AC is este corrosion inhibitor barrier type contains ether alkenylamine anhydride or imidazoline, for example COD-002 or 2-phenylbenzimidazol.

6. Thixotropic material according to any one of claims 1 and 2, characterized in that as a rheological additive contains Benton 34, or Benton 38, or Benton 52, or panel B-20 or gidrirovannoe castor oil.

7. Thixotropic material according to any one of claims 1 and 2, characterized in that as activator rheological additive contains ethanol or butanol or propylene carbonate, or butylcellosolve, or their mixture in any combinations and ratios.

8. Thixotropic material according to any one of claims 1 and 2, characterized in that the solvent contains white spirit or nefras 150/200, or their mixture in any combinations and ratios.

9. Thixotropic material according to claim 1, characterized in that as antioxidant additives contains Agidol-1 as an inhibitor of corrosion of the anode - type distillation residues of synthetic fatty acids, as a cathodic corrosion inhibitor type - petroleum calcium sulfonate, as a corrosion inhibitor barrier type - ether alkenylamine anhydride, as a rheological additive - Benton-34, as activator rheological additive - butanol as solvent white spirit, in the following ratio, wt.%:

oxidized bitumen 33,0-35,0
petroleum aromatic resin5,0-7,0
distillation residues of synthetic fatty acids3,0-5,0
petroleum calcium sulfonate7,5-9,5
ether alkenylamine anhydride1,5-2,0
Agidol-10,5-1,0
ether of glycerol rosin tall0,5-1,0
the zinc phosphateof 3.0-3.5
the micro-talc6,0-6,5
Benton 342,0-4,0
butanol3,0-5,0
white spirit100



 

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2 tbl

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9 cl, 3 tbl

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2 tbl

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1 tbl

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2 cl, 2 tbl

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3 cl, 2 tbl, 4 ex

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3 cl, 2 tbl, 4 ex

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2 tbl, 3 ex

Bitumen composition // 2267506

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3 tbl

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2 cl, 1 tbl

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2 tbl

FIELD: building industry, in particular hydraulic insulating materials for insulating of basements, pipelines, etc.

SUBSTANCE: claimed composition contains bitumen, plasticizer and/or solvent and polymer additive. As polymer additive it contains low molecular hydroxyl-containing rubber representing isoprene and butadiene copolymer, or divinyl-piperylene rubber, or butadiene rubber having molecular mass of 2000-5000 and containing 0.6-1.9 % of hydroxy groups, and additionally polyisocyanate curing agent, urethane-forming catalyst, chain-branching agent having not less than two hydroxy or amine groups in the next ratio (mass pts): low molecular hydroxyl-containing rubber 100; polyisocyanate curing agent 12-36; urethane-forming catalyst 0.001-3.0; chain-branching agent 0.6-8.0; plasticizer and/or solvent 20-200; bitumen 50-200. In the second embodiment composition contains bitumen, plasticizer and/or solvent and polymer additive. As polymer additive it contains rubber composition based on low molecular hydroxyl-containing isoprene and butadiene copolymer, plasticizer, filler, antioxidant in the next ratio (mass %): low molecular hydroxyl-containing rubber 100; plasticizer 80-100; filler 160-220; antioxidant 1-2. Additionally it contains polyisocyanate curing agent, urethane-forming catalyst, chain-branching agent having not less than two hydroxy or amine groups in the next ratio (mass pts): polymer additive 100; polyisocyanate curing agent 4-14; urethane-forming catalyst 0.001-3.0; chain-branching agent 0.6-8.0; plasticizer and/or solvent 25-200; bitumen 25-200. In the third embodiment contains bitumen, plasticizer and/or solvent and polymer additive. As polymer additive it contains rubber composition based on low molecular hydroxyl-containing divinyl-piperylene rubber, plasticizer, filler, antioxidant in the next ratio (mass %): low molecular hydroxyl-containing divinyl -piperylene rubber 100; plasticizer 20-80; filler 60-100; antioxidant 1-2; in the next ratio of composition components (mass pts): polymer additive 100; polyisocyanate curing agent 4-14; urethane-forming catalyst 0.001-3.0; chain-branching agent 0.6-8.0; plasticizer and/or solvent 25-200; bitumen 25-200.

EFFECT: composition of increased adhesiveness to base under forming of hydraulic insulating and rooting coatings by cold method.

9 cl, 4 tbl, 30 ex

FIELD: transport of gases, liquids and suspensions.

SUBSTANCE: protecting coating for tubes contains bitumen composition including, mass %: bitumen, 20 - 98; block-copolymer of vinyl aromatic hydrocarbon and conjugated diene with hydrogenated diene block, 0.5 - 30; stereo-regular polyolefin, 0.5 - 30; and filler, 1 - 50 for total mass of bitumen composition.

EFFECT: improved operational characteristics of tubes with such coating.

9 cl, 2 tbl, 3 ex

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