WO2019070146A1 - Varnish-paint composition for obtaining thin coatings by cathodic electrodeposition method - Google Patents

Varnish-paint composition for obtaining thin coatings by cathodic electrodeposition method Download PDF

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Publication number
WO2019070146A1
WO2019070146A1 PCT/RU2017/000739 RU2017000739W WO2019070146A1 WO 2019070146 A1 WO2019070146 A1 WO 2019070146A1 RU 2017000739 W RU2017000739 W RU 2017000739W WO 2019070146 A1 WO2019070146 A1 WO 2019070146A1
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Prior art keywords
paint composition
epoxy resin
aqueous
varnish
resistance
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PCT/RU2017/000739
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French (fr)
Russian (ru)
Inventor
Ирина Федоровна УТКИНА
Татьяна Николаевна МАЕВА
Надежда Владимировна ТИМОНКИНА
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Общество С Ограниченной Ответственностью "Рустек"
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Priority to PCT/RU2017/000739 priority Critical patent/WO2019070146A1/en
Priority to CN201780095695.8A priority patent/CN111819250B/en
Priority to RU2017135474A priority patent/RU2676608C1/en
Publication of WO2019070146A1 publication Critical patent/WO2019070146A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/16—Homopolymers or copolymers of vinylidene fluoride
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/18—Homopolymers or copolymers of tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/20—Homopolymers or copolymers of hexafluoropropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications

Definitions

  • the invention relates to a water-based paint compositions with a high scattering ability, used to obtain chemically resistant and heat-resistant coatings by the method of cathodic electrodeposition.
  • composition for the production of hydrophobic coatings by the method of cathode electrodeposition of chemical resistant wear-resistant coatings disclosed in RU 2222563 C1, publ. 01/27/2004, based on fluoroplast and water, characterized in that it includes as a fluoroplast an aqueous dispersion of fluoroplast F-40D (which can be used as an analogue of Du Pont's Tefzel fluoropolymer), and additionally contains a solution in ethyl cellosolve of epoxy-amine adduct, diethylaminopropylamine and epoxy resin, 100% formic acid, stabilizer - ethoxylated nonylphenol and dodecylammonium chloride in the following ratio of components, g / l: specified adduct - 100; 100% formic acid - 1, 41; water dispersion of fluoroplast F40D - 250-300; the specified stabilizer - 30-50; dodecylammonium chloride -7-8;
  • a disadvantage of the known composition is its low dispersibility, which does not allow to apply the composition to obtain coatings on products of complex configuration.
  • the lacquer composition includes, as a binder, an epoxy-amine adduct modified by a partially blocked toluylene diisocyanate, a pigment paste stabilized by the said adduct, a neutralizer — 100% acetic acid, butyl glycol, phenoxypropanol, water, and a latex of fluorinated rubber, in a proportion of components, in a set of components; the specified adduct - 100; pigment paste (100%) - 28-32; fluororubber latex (60-70% dry residue (co.) - 48-52; acetic acid (100%) - 0.4; butyl glycol - 3.5-4, 1; phenoxypropanol - 4.5-5, 1; water - the rest is up to 1 l.
  • the disadvantage of the paint composition disclosed above is the low temperature resistance of the coating based on the paint composition.
  • the objective of the claimed invention is to develop a paint composition for the production of thin heat-resistant and chemical resistant coatings by the method of cathodic electrodeposition.
  • the technical result of the invention is to increase the heat resistance, salt resistance and water resistance of the coating, with high chemical resistance of the coating.
  • the paint composition for the production of thin coatings by the method of cathodic electrodeposition containing an aqueous emulsion of epoxy resin with a concentration of 36-38% with. (dry residue), 100% acetic acid, 2% aqueous solution of 3-aminopropyltriethoxysilane and demineralized water in the following ratio of components, g / l:
  • demineralized water - the rest is up to 1 l.
  • the paint composition additionally contains an aqueous dispersion of a pigment paste, stabilized with low molecular weight epoxy resin, with a concentration of 52-56% according to co, in the amount of 40-47 g / l.
  • the paint-and-paint composition additionally contains an aqueous fluororubber latex with a concentration of 60-70% per co, in the amount of 2.5-10 g / l.
  • the claimed paint composition without the addition of pigment paste and aqueous latex fluororubber is prepared as follows.
  • the claimed paint composition with the addition of a pigment paste and / or aqueous latex fluorororubber is prepared as follows. To the calculated amount of demineralized water, pre-acidified with acetic acid, with stirring, add the appropriate amount (from the claimed formula) aqueous latex rubber with fluorine rubber 60-70% according to., With vigorous stirring (200-500 rpm) slowly thin the necessary amount (from the declared in the claims) of an epoxy resin emulsion with an epoxy resin concentration of 36-38% of co. When this happens, additional stabilization of the rubber particles by the binder occurs, and the fluoro-rubber particles acquire a positive charge. Further, if necessary, with stirring add the aqueous dispersion of the pigment paste.
  • pigments can be any color
  • stabilized by low molecular weight epoxy resin with a pigment concentration of 52-56% in co. and continue stirring, and then the required amount (of the claimed 2% aqueous solution of 3-aminopropyltriethoxysilane) is added.
  • the prepared claimed composition is applied by electrodeposition on any conductive materials: ferrous and non-ferrous metals, powdered metals, as well as semiconductor materials and conductive plastics. It is necessary to change only the modes of application and the method of surface preparation before painting.
  • the surface of the product to which the coating is applied is prepared before coating, for which the surface is degreased (treated with white spirit, acetone, special detergent compositions).
  • the coating is carried out by immersing the product to be painted in the electroplating bath, which contains an aqueous solution of a paintwork material.
  • the bath is equipped with mixing systems, temperature control of the working solution, electrodialysis cleaning system, a DC source.
  • the product to be painted is an anode or cathode, and the stainless steel plates specially lowered into the bath are the opposite electrode.
  • Fluororubber is a copolymer of hexafluoropropylene, tetrafluoroethylene and vinylidene fluoride with a fluorine content of 70 May. %
  • the introduction of epoxy resin provides the basis of the film, increases the salt resistance and water resistance; the introduction of pigment paste provides the color of the film, increases the hardness, salt resistance and water resistance of the coating; the introduction of fluororubber provides the necessary level of chemical resistance of the coating; the introduction of aminopropyltriethoxysilane improves heat resistance, chemical resistance, water resistance of the coating; Acetic acid is an epoxy resin neutralizer that provides solution acidity.
  • Table 1 shows examples of the compositions of the claimed paint composition, in Table 2, 3, 4 and 5 the properties of the obtained coatings on steel grade 08KP (Carbon structural quality steel) in accordance with the examples of the claimed paint and varnish composition, and in Table 6, 7, 8 and 9 - properties of coatings on p-type semiconductor thermoelectric material (Bi 2 Te2) x (Sb 2 Te) i. x and s (Bi2Te 3 ) x (Sb2Te 3 ) y (Sb 2 Se 3 ) 1 .y- x , ⁇ -type conductivity (Bi 2 Se 3 ) x (Bi 2 Te 3 ) 1 . x. claimed paint composition

Abstract

The invention relates to aqueous varnish-paint compositions having a high dispersibility which are used to obtain chemical-resistant and heat-resistant coatings by a cathodic electrodeposition method. The technical result of the invention is increased heat resistance, salt resistance and water resistance of the coating as well as high chemical resistance of the coating. A varnish-paint composition for obtaining thin coatings by a cathodic electrodeposition method comprises an aqueous emulsion of epoxy resin comprising a concentration of 36-38% by reference standard, 100% acetic acid, 2% aqueous solution of 3-(aminopropyl)triethoxysilane and demineralized water, having the following component ratio, g/l: 120-150 of aqueous emulsion of epoxy resin; 0.1-0.6 of 100% acetic acid; 5-50 of 2% aqueous solution of (3-aminopropyl)triethoxysilane; up to 1 l of demineralised water for the remainder.

Description

ЛАКОКРАСОЧНАЯ КОМПОЗИЦИЯ ДЛЯ ПОЛУЧЕНИЯ ТОНКИХ ПОКРЫТИЙ  PAINT AND VARNISH COMPOSITION FOR RECEIVING THIN COATINGS
МЕТОДОМ КАТОДНОГО ЭЛЕКТРООСАЖДЕНИЯ METHOD OF CATHODE ELECTRIC SEDUCTION
ОБЛАСТЬ ТЕХНИКИ TECHNICAL FIELD
Изобретение относится к лакокрасочным водным композициям с высокой рассеивающей способностью, используемых для получения химически стойких и термостойких покрытий методом катодного электроосаждения.  The invention relates to a water-based paint compositions with a high scattering ability, used to obtain chemically resistant and heat-resistant coatings by the method of cathodic electrodeposition.
УРОВЕНЬ ТЕХНИКИ  BACKGROUND
Известна композиция для получения гидрофобных покрытий методом катодного электроосаждения химстойких износостойких покрытий, раскрытая в RU 2222563 С1 , опубл. 27.01.2004, на основе фторопласта и воды, отличающаяся тем, что она включает в качестве фторопласта водную дисперсию фторопласта Ф- 40Д ( аналогом которого может служить фторполимер Tefzel фирмы Du Pont) и дополнительно содержит раствор в этилцеллозольве эпоксиаминного аддукта, диэтиламинопропиламина и эпоксидной смолы, 100%-ную муравьиную кислоту, стабилизатор - оксиэтилированный нонилфенол и додециламмонийхлорид при следующем соотношении компонентов, г/л: указанный аддукт - 100; 100% муравьиная кислота - 1 ,41 ; водная дисперсия фторопласта Ф40Д - 250-300; указанный стабилизатор - 30-50; додециламмоний хлорид -7-8; вода - остальное до 1 л.  Known composition for the production of hydrophobic coatings by the method of cathode electrodeposition of chemical resistant wear-resistant coatings, disclosed in RU 2222563 C1, publ. 01/27/2004, based on fluoroplast and water, characterized in that it includes as a fluoroplast an aqueous dispersion of fluoroplast F-40D (which can be used as an analogue of Du Pont's Tefzel fluoropolymer), and additionally contains a solution in ethyl cellosolve of epoxy-amine adduct, diethylaminopropylamine and epoxy resin, 100% formic acid, stabilizer - ethoxylated nonylphenol and dodecylammonium chloride in the following ratio of components, g / l: specified adduct - 100; 100% formic acid - 1, 41; water dispersion of fluoroplast F40D - 250-300; the specified stabilizer - 30-50; dodecylammonium chloride -7-8; water - the rest is up to 1 l.
Недостатком известной композиции является ее низкая рассеивающая способность, что не позволяет применять композицию для получения покрытий на изделиях сложной конфигурации.  A disadvantage of the known composition is its low dispersibility, which does not allow to apply the composition to obtain coatings on products of complex configuration.
Кроме того, из уровня техники известна лакокрасочная композиция, раскрытая в RU 2437908 С1 , опубл. 27.12.2011 , прототип. Лакокрасочная композиция включает в качестве связующего эпоксиаминный аддукт, модифицированный частично блокированным толуилен-диизоцианатом, пигментную пасту, стабилизированную указанным аддуктом, нейтрализатор - 100%-ую уксусную кислоту, бутилгликоль, феноксипропанол, воду и латекс фторкаучука, при следующем соотношении компонентов, г/л: указанный аддукт - 100; пигментная паста (100%) - 28-32; латекс фторкаучука (60-70% сухой остаток (со.) - 48-52; уксусная кислота (100%) - 0,4; бутилгликоль - 3,5-4, 1 ; феноксипропанол - 4,5-5, 1 ; вода - остальное до 1 л.  In addition, from the prior art known paint composition, disclosed in RU 2437908 C1, publ. 12.27.2011, the prototype. The lacquer composition includes, as a binder, an epoxy-amine adduct modified by a partially blocked toluylene diisocyanate, a pigment paste stabilized by the said adduct, a neutralizer — 100% acetic acid, butyl glycol, phenoxypropanol, water, and a latex of fluorinated rubber, in a proportion of components, in a set of components; the specified adduct - 100; pigment paste (100%) - 28-32; fluororubber latex (60-70% dry residue (co.) - 48-52; acetic acid (100%) - 0.4; butyl glycol - 3.5-4, 1; phenoxypropanol - 4.5-5, 1; water - the rest is up to 1 l.
Недостатком раскрытой выше лакокрасочной композиции является низкая термостойкость покрытия на основе лакокрасочной композиции.  The disadvantage of the paint composition disclosed above is the low temperature resistance of the coating based on the paint composition.
РАСКРЫТИЕ ИЗОБРЕТЕНИЯ  DISCLOSURE OF INVENTION
Задачей заявленного изобретения является разработка лакокрасочной композиции для получения тонких термостойких и химстойких покрытий методом катодного электроосаждения. Техническим результатом изобретения является повышение термостойкости, солестойкости и водостойкости покрытия, при высокой химстойкости покрытия. The objective of the claimed invention is to develop a paint composition for the production of thin heat-resistant and chemical resistant coatings by the method of cathodic electrodeposition. The technical result of the invention is to increase the heat resistance, salt resistance and water resistance of the coating, with high chemical resistance of the coating.
Указанный технический результат достигается за счет того, что лакокрасочная композиция для получения тонких покрытий методом катодного электроосаждения, содержащая водную эмульсию эпоксидной смолы с концентрацией 36-38 % по со. (сухому остатку), 100 % уксусную кислоту, 2 % водный раствор 3- аминопропилтриэтоксисилана и деминерализованную воду при следующем соотношении компонентов, г/л:  This technical result is achieved due to the fact that the paint composition for the production of thin coatings by the method of cathodic electrodeposition, containing an aqueous emulsion of epoxy resin with a concentration of 36-38% with. (dry residue), 100% acetic acid, 2% aqueous solution of 3-aminopropyltriethoxysilane and demineralized water in the following ratio of components, g / l:
водная эмульсия эпоксидной смолы - 120-150;  epoxy resin water emulsion - 120-150;
100 % уксусная кислота - 0,1-0,6;  100% acetic acid - 0.1-0.6;
2 % водный раствор 3-аминопропилтриэтоксисилана - 5-50;  2% aqueous solution of 3-aminopropyltriethoxysilane - 5-50;
деминерализованная вода - остальное до 1 л.  demineralized water - the rest is up to 1 l.
Лакокрасочная композиция дополнительно содержит водную дисперсию пигментной пасты, стабилизированной низкомолекулярной эпоксидной смолой, с концентрацией 52-56 % по со, в количестве 40-47 г/л.  The paint composition additionally contains an aqueous dispersion of a pigment paste, stabilized with low molecular weight epoxy resin, with a concentration of 52-56% according to co, in the amount of 40-47 g / l.
Лакокрасочная композиция дополнительно содержит водный латекс фторкаучука с концентрацией 60-70 % по со, в количестве 2,5-10 г/л.  The paint-and-paint composition additionally contains an aqueous fluororubber latex with a concentration of 60-70% per co, in the amount of 2.5-10 g / l.
ОСУЩЕСТВЛЕНИЕ ИЗОБРЕТЕНИЯ  IMPLEMENTATION OF THE INVENTION
Заявленную лакокрасочную композицию без добавки пигментной пасты и водного латекса фторкаучука готовят следующим образом.  The claimed paint composition without the addition of pigment paste and aqueous latex fluororubber is prepared as follows.
К рассчитанному количеству деминерализованной воды, предварительно подкисленной уксусной кислотой (в количествах из заявленных в формуле изобретения), при интенсивном перемешивании (200-500 об/мин) медленно, тонкой струей вводится необходимое количество (из заявленных в формуле изобретения) эмульсии эпоксидной смолы с концентрацией эпоксидной смолы 36-38 % по со., а затем добавляется необходимое количество (из заявленных в формуле изобретения) 2 % водного раствора 3-аминопропилтриэтоксисилана.  To the calculated amount of demineralized water, previously acidified with acetic acid (in the amounts stated in the claims), with vigorous stirring (200-500 rpm), the necessary amount (from the claims in the invention) of the epoxy resin emulsion with a concentration epoxy resin 36-38% co., and then add the required amount (from the claimed in the claims) 2% aqueous solution of 3-aminopropyltriethoxysilane.
Заявленную лакокрасочную композицию с добавкой пигментной пасты и/или водного латекса фторкаучука готовят следующим образом. К рассчитанному количеству деминерализованной воды, предварительно подкисленной уксусной кислотой, при перемешивании добавляют соответствующее количество (из заявленных в формуле изобретения) водного латекса фторкаучука с концентрацией фторкаучука 60-70 % по со., при интенсивном перемешивании (200-500 об/мин) медленно тонкой струей вводится необходимое количество (из заявленных в формуле изобретения) эмульсии эпоксидной смолы с концентрацией эпоксидной смолы 36-38 % по со. При этом происходит дополнительная стабилизация частиц каучука связующим, и частицы фторкаучука приобретают положительный заряд. Далее, при необходимости, при перемешивании добавляют водную дисперсию пигментной пасты (пигменты могут быть любыми по цвету), стабилизированной низкомолекулярной эпоксидной смолой, с концентрацией пигмента 52-56 % по со. и продолжают перемешивание, а затем добавляется необходимое количество (из заявленных в формуле изобретения) 2 % водного раствора 3-аминопропилтриэтоксисилана. The claimed paint composition with the addition of a pigment paste and / or aqueous latex fluororubber is prepared as follows. To the calculated amount of demineralized water, pre-acidified with acetic acid, with stirring, add the appropriate amount (from the claimed formula) aqueous latex rubber with fluorine rubber 60-70% according to., With vigorous stirring (200-500 rpm) slowly thin the necessary amount (from the declared in the claims) of an epoxy resin emulsion with an epoxy resin concentration of 36-38% of co. When this happens, additional stabilization of the rubber particles by the binder occurs, and the fluoro-rubber particles acquire a positive charge. Further, if necessary, with stirring add the aqueous dispersion of the pigment paste. (pigments can be any color), stabilized by low molecular weight epoxy resin, with a pigment concentration of 52-56% in co. and continue stirring, and then the required amount (of the claimed 2% aqueous solution of 3-aminopropyltriethoxysilane) is added.
Приготовленную заявленную композицию наносят методом электроосаждения на любые токопроводящие материалы: черные и цветные металлы, порошковые металлы, а также полупроводниковые материалы и токопроводящие пластмассы. Необходимо изменять только режимы нанесения и способ подготовки поверхности перед окраской.  The prepared claimed composition is applied by electrodeposition on any conductive materials: ferrous and non-ferrous metals, powdered metals, as well as semiconductor materials and conductive plastics. It is necessary to change only the modes of application and the method of surface preparation before painting.
Для этого поверхность изделия, на которую наносят покрытие, подготавливают перед нанесением покрытия, для чего поверхность обезжиривают (обрабатывают уайт- спиритом, ацетоном, специальными моющими составами).  For this, the surface of the product to which the coating is applied is prepared before coating, for which the surface is degreased (treated with white spirit, acetone, special detergent compositions).
Нанесение покрытий осуществляется при погружении окрашиваемого изделия в ванну электроосаждения, в которой содержится водный раствор лакокрасочного материала. Ванна оснащена системами перемешивания, термостатирования рабочего раствора, системой электродиализной очистки, источником постоянного тока. Окрашиваемое изделие является анодом или катодом, а специально опущенные в ванну пластины из нержавеющей стали противоположным электродом.  The coating is carried out by immersing the product to be painted in the electroplating bath, which contains an aqueous solution of a paintwork material. The bath is equipped with mixing systems, temperature control of the working solution, electrodialysis cleaning system, a DC source. The product to be painted is an anode or cathode, and the stainless steel plates specially lowered into the bath are the opposite electrode.
Электроосаждение проводят в следующем режиме: напряжение нанесения (V= const) - 160 - 250 В; продолжительность нанесения - 60 - 180 сек; температура рабочего раствора - 30 - 34 °С; толщина покрытий - 10 - 40 мкм. После нанесения покрытия промывают обессоленной водой и термоотверждают при 180°С в течение 30 минут.  Electrodeposition is carried out in the following mode: application voltage (V = const) - 160 - 250 V; application duration - 60 - 180 seconds; working solution temperature - 30 - 34 ° С; coating thickness - 10 - 40 microns. After coating, it is washed with desalted water and thermoset at 180 ° C for 30 minutes.
Фторкаучук является сополимером гексафторпропилена, тетрафторэтилена и винилиденфторида с содержанием фтора 70 мае. %.  Fluororubber is a copolymer of hexafluoropropylene, tetrafluoroethylene and vinylidene fluoride with a fluorine content of 70 May. %
Введение эпоксидной смолы обеспечивает основу пленки, повышает солестойкость и водостойкость; введение пигментной пасты обеспечивает цвет пленки, повышает твердость, солестойкость и водостойкость покрытия; введение фторкаучука обеспечивает необходимый уровень химстойкости покрытия; введение аминопропилтриэтоксисилана повышает термостойкость, химстойкость, водостойкость покрытия; уксусная кислота - нейтрализатор эпоксидной смолы, обеспечивает кислотность раствора.  The introduction of epoxy resin provides the basis of the film, increases the salt resistance and water resistance; the introduction of pigment paste provides the color of the film, increases the hardness, salt resistance and water resistance of the coating; the introduction of fluororubber provides the necessary level of chemical resistance of the coating; the introduction of aminopropyltriethoxysilane improves heat resistance, chemical resistance, water resistance of the coating; Acetic acid is an epoxy resin neutralizer that provides solution acidity.
В таблице 1 приведены примеры составов заявленной лакокрасочной композиции, в таблице 2, 3, 4 и 5 - свойства полученных покрытий на стали марки 08КП (Сталь конструкционная углеродистая качественная) в соответствии с примерами заявленной лакокрасочной композиции, а в таблице 6, 7, 8 и 9 - свойства покрытий на полупроводниковом термоэлектрическом материале р-типа (Bi2Te2)x(Sb2Te)i.x и з (Bi2Te3)x(Sb2Te3)y(Sb2Se3)1.y-x , η-типа проводимости (Bi2Se3)x(Bi2Te3)1.x. заявленной лакокрасочной композиции Table 1 shows examples of the compositions of the claimed paint composition, in Table 2, 3, 4 and 5 the properties of the obtained coatings on steel grade 08KP (Carbon structural quality steel) in accordance with the examples of the claimed paint and varnish composition, and in Table 6, 7, 8 and 9 - properties of coatings on p-type semiconductor thermoelectric material (Bi 2 Te2) x (Sb 2 Te) i. x and s (Bi2Te 3 ) x (Sb2Te 3 ) y (Sb 2 Se 3 ) 1 .y- x , η-type conductivity (Bi 2 Se 3 ) x (Bi 2 Te 3 ) 1 . x. claimed paint composition
Изобретение было раскрыто выше со ссылкой на конкретный вариант его осуществления. Для специалистов могут быть очевидны и иные варианты осуществления изобретения, не меняющие его сущности, как она раскрыта в настоящем описании. Соответственно, изобретение следует считать ограниченным по объему только нижеследующей формулой изобретения. The invention has been disclosed above with reference to a specific embodiment. Other embodiments of the invention that do not change its essence as disclosed in the present description may be obvious to those skilled in the art. Accordingly, the invention should be considered limited in scope only by the following claims.
Таблица 1 Table 1
Figure imgf000006_0001
Таблица 2
Figure imgf000006_0001
table 2
Лакокрасочная композиция на стали Paint composition on steel
Figure imgf000007_0001
Таблица 3
Figure imgf000007_0001
Table 3
Лакокрасочная композиция с добавкой пигментной пасты и фторкаучука на стали
Figure imgf000008_0001
Таблица 4Paint composition with the addition of pigment paste and fluororubber on steel
Figure imgf000008_0001
Table 4
Лакокрасочная композиция с добавкой пигментной пасты на стали
Figure imgf000009_0001
Таблица 5Paint composition with the addition of pigment paste on steel
Figure imgf000009_0001
Table 5
Лакокрасочная композиция с добавкой фторкаучука на стали
Figure imgf000010_0001
Таблица 6Fluoro-rubber paint composition on steel
Figure imgf000010_0001
Table 6
Лакокрасочная композиция на полупроводникеPaint composition on a semiconductor
Figure imgf000011_0001
Figure imgf000011_0001
Таблица 7Table 7
Лакокрасочная композиция с добавкой пигментной пасты и фторкаучука на Paint and varnish composition with the addition of pigment paste and fluororubber on
полупроводнике  semiconductor
Figure imgf000012_0001
Таблица 8
Figure imgf000012_0001
Table 8
Лакокрасочная композиция с добавкой пигментной пасты на полупроводнике
Figure imgf000013_0001
Paint composition with the addition of pigment paste on a semiconductor
Figure imgf000013_0001
Таблица 9Table 9
Лакокрасочная композиция с добавкой на полупроводнике
Figure imgf000014_0001
Paint composition with an additive on the semiconductor
Figure imgf000014_0001

Claims

ФОРМУЛА ИЗОБРЕТЕНИЯ CLAIM
1 Лакокрасочная композиция для получения тонких покрытий методом катодного электроосаждения, содержащая водную эмульсию эпоксидной смолы с концентрацией 36-38 % по со., 100 % уксусную кислоту, 2 % водный раствор 3- аминопропилтриэтоксисилана и деминерализованную воду при следующем соотношении компонентов, г/л:  1 Paint composition for producing thin coatings by cathodic electrodeposition method, containing an aqueous emulsion of epoxy resin with a concentration of 36-38% co., 100% acetic acid, 2% aqueous solution of 3-aminopropyltriethoxysilane and demineralized water in the following ratio of components, g / l:
водная эмульсия эпоксидной смолы - 120-150;  epoxy resin water emulsion - 120-150;
100 % уксусная кислота - 0,1-0,6;  100% acetic acid - 0.1-0.6;
2 % водный раствор 3-аминопропилтриэтоксисилан - 5-50;  2% aqueous solution of 3-aminopropyltriethoxysilane - 5-50;
деминерализованная вода - остальное до 1 л.  demineralized water - the rest is up to 1 l.
2 Лакокрасочная композиция по п. 1 , отличающаяся тем, что дополнительно содержит водную дисперсию пигментной пасты, стабилизированной низкомолекулярной эпоксидной смолой, с концентрацией 52-56 % по со, в количестве 40-47 г/л.  2 Paint composition according to claim 1, characterized in that it additionally contains an aqueous dispersion of a pigment paste, stabilized with a low molecular weight epoxy resin, with a concentration of 52-56% for co, in an amount of 40-47 g / l.
3 Лакокрасочная композиция по любому из п. п. 1-2, отличающаяся тем, что дополнительно содержит водный латекс фторкаучука с концентрацией 60-70 % по со, в количестве 2,5-10 г/л.  3 Paint and varnish composition according to any one of pp. 1-2, characterized in that it additionally contains an aqueous latex of fluororubber with a concentration of 60-70% according to Co, in the amount of 2.5-10 g / l.
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