Aqueous-dispersion composition

FIELD: paint and varnish materials.

SUBSTANCE: invention relates to an aqueous-dispersion dye. The coating composition comprises the following components, wt.-%: epoxy-rubber adduct, 15-36; low-molecular epoxide resin, 10-18; surfactant, 0.5-0.65; biocide additive, 0.1-0.4; accessory substances, 0.1-0.8, and water, the balance. Epoxy-rubber adduct is prepared by co-condensation of epoxide resin and liquid nitrile rubber by functional groups, and 2.0-10.0 weight p. p. of hardening agent is taken per 100 weight p. p. of abovementioned composition. The composition can comprise additionally pigments and/or filling agent. Invention provides enhancing stability of covers against effect of petroleum products, acids, bases and gaseous oxides in simultaneous expanding functional possibilities for their using based on increasing the temperature range in applying on surfaces to be protected. Proposed composition is used in building in carrying out works associated with protection of metal, concrete, ferroconcrete and other surfaces against effect of corrosive environment for aims of priming and preparing protective-decorative covers.

EFFECT: improved and valuable properties of composition.

2 tbl, 6 ex

The invention relates to the field of paints and varnishes, in particular to water-dispersion paints, used in construction for work on the protection of metal, concrete, reinforced concrete and other surfaces against corrosive environment for priming and getting protective and decorative coatings.

Known various compounds and compositions for anti-corrosion coatings: odnoupakovochnye, for example, alkyd, vinyl, epoxy-ether, acrylic, and two (both supplied in two packages) of the system containing the composition and a hardener, which are mixed before use, in particular epoxyacrylate.

Famous two packages polymer composition for protective and decorative coatings, including the composition containing film-forming mixture epoxiconazole adduct obtained by deposition on the functional groups in the stoichiometric ratio of the low molecular weight epoxy resin and liquid nitrile rubber, and a low molecular weight epoxy resin, filler, pigment and/or dye and an organic solvent, and a curing agent containing amino groups, in the following ratio of components, wt.%:

and as a curing agent containing an amino group, a mixture of polyamine or mixture of polyamines with aminosilanes at a ratio of 100 parts of the composition 2-22 parts hardener /Patent RF №2228346, C09D 163/02, C09D 5/28, 2004/.

A disadvantage of the known compositions, especially given the growing environmental requirements for paint products, is a high solvent content, which restricts the use of coatings, in particular for operation in closed rooms, as well as the inadmissibility of the application of the composition on a wet coating (humidity less than 6%).

Known water-dispersion paint composition comprising a waterborne binder, epoxy emulsion obtained by stirring at 51-79°epoxy Dianova resin with an emulsifier and water, administered in two portions, first 5-50 wt.% of the total amount of water, then the remaining amount through 5-120mm min, pigments, thickening agent, corrosion inhibitor, surfactant, biocide additive, coalescers additive and water in the following ratio, wt.%:

the composition may contain a neutralizing base in an amount of 0.1-5.0 wt.%, and defoamer in an amount of 0.01-0.5 wt.%. /Patent RF №2154079, C09D 5/02, C09D 163/00, 2000/.

The disadvantages of this structure are its low resistance to petroleum products and aggressive gases, as well as limiting the possibility of applying only at temperatures above +12°C.

The present invention is the creation of environmentally-stable compositions for corrosion protection of concrete, reinforced concrete, metal and other surfaces with a wide temperature range of application.

The technical result consists in increasing the resistance of the proposed compositions to the effects of oil and Agra is a passive gas emissions while extending the functionality of their use by increasing the temperature range of the application surface to be protected.

The problem is solved and the technical result is achieved due to the fact that the water-dispersion composition characterized by the fact that includes a composition containing a mixture of epoxiconazole adduct obtained by deposition according to the functional groups of epoxy resin and liquid nitrile rubber, and a low molecular weight epoxy resin, surfactant, biocide additives, excipients and water, and a curing agent, in the following ratio of components, wt.%:

with a ratio of 100 parts of the composition of 2.0 to 10.0 parts of a curing agent, the composition of the water-dispersed composition may additionally contain a pigment in an amount up to 10 wt.% and/or filler in the amount of 8-40%.

As the hardener, you can use a mixture of amine hardeners and aminosilane type.

Production technology epoxiconazole adduct known /Patent RF №2228346,C 09 D 163/02, C 09 D 5/28, 2004/.

All other components of the proposed structure regulated by the normative documents:

- low molecular weight epoxy resin e-40 (OST 6-10-416-77); e-41, e-R (TU 6-10-607-78); ED-16, ED-20 (GOST 10587-84);

- surface-active substances, for example, ethoxylated alkyl phenols, polyvinyl alcohol (GOST 10779-78), alkylsulfate sodium (GOST R 50001-92), emulsifier OP-10 (GOST 8433-81), and others;

- biocidal additive - for example, the substance-based tetramethylthiuramdisuphide brand thiuram D (GOST 740-76), a substance on the basis of 2-n-octyl-4-isothiazoline grade Scan 8 (Rohm and Haas), and others;

auxiliary substances: - Triton CF-10 (Union carbide); sodium or ammonium salt of polycarboxylic acid brand Orotan 731 (35%) (company Rohm and Haas), brand Orotan 165 (21%) (company Rohm and Haas); sodium polyphosphate (GOST 20291-86); matter on the basis of modified polysiloxane - grade Copolymer 3 (TU 6-02-1071-76), brand BIC 306 (company BIC CHEMIE, Germany); defoamer EC 10-26 (TU 6-02-1178-79), antifreeze, diethylene glycol (GOST 10136-77), neutralizing additive aqueous solution of ammonia (25%) (GOST standard 9-92); 92 organic), organic nitrogenous bases, such as dimethylethanolamine (TU 6-02-1086-77); triethylamine (GOST 9966-93), and others;

- pigments - any neutral or weakly basic pigments, for example titanium dioxide (GOST 9808-84), carbon technical brand Printex (Phi the mA Degussa, Germany), yellow iron oxide pigment (GOST 1872-80), pigment red iron oxide for rubber industry (TU 6-10-16-18-77), mica ground for the rubber industry (GOST 855-74), strontium chronologicly (TU 48-0516-4-94), pigment based on zinc phosphate (TU 2329-0-002-12588040-95), omyacarb (company Omya), which is a fine marble powder with a content of calcium carbonate is not less than 98%, and others;

- fillers - chalk natural enriched MMC-1, MMC-2 (GOST 17498-72), talc powder, MT-XS, MT-BL (GOST 19729-74) and others.

- hardeners: polyamine or mixture of polyamines: Diethylenetriamine (DETA) and/or Triethylenetetramine (THETA), and/or polyethylenepolyamine (Pepa), and/or cycloaliphatic amine adduct, and/or Polynicotinate, which use the hardener No. 2 THE 6-10-1279-77; hardener No. 3 THE 6-10-1091-76; hardener No. 4 THE 6-10-1429-79; hardener No. 5 THE 6-10-1093-76; hardener No. 6 THE 6-10-1545-76; and/or aminosilane: γ-aminopropyltriethoxysilane (AGM-9) or the product of hydrolytic polycondensation γ-aminopropyltriethoxysilane in cyclohexanone or toluene (ASOT-2 or ASOT-4) and others.

Water-dispersed composition according to the invention is prepared as follows.

Example 1.

To obtain a water-based primer composition in the mixer serves 115,0 g resin ED-20 and 150,0 g epoxiconazole adduct and heated to 60°C. Then d is I obtain a dispersion of the binder in the dissolver download 5.0 g surfactant - emulsifier OP-10, 1.0 g biocidal additives - Turama D, 1.0 g excipients - defoamer EC 10-26 and 728,0 g of water, stirred for 10 min and introducing the heated mixture of the resin ED-20 and epoxiconazole adduct, stirred for 45 minutes

Immediately prior to use water-dispersed composition per 100 parts of the composition is administered to 7.0 parts hardener - mixture of amine hardeners and aminosilane type.

Example 2.

The receiving part consists of three stages, two of which - the preparation of pigment paste and obtaining a water dispersion of the binder may be performed sequentially or in parallel, at the third stage is prepared directly water-dispersed composition.

Preparation of pigment paste. In the dissolver download 562,5 grams of water, 0.5 g excipients (dispersant) sodium polyphosphate; 1.0 g surfactant-emulsifier OP-10; excipients - 12.0 g of antifreeze, diethylene glycol and 1.5 g of neutralizing supplements - 25% ammonia water, stirred for 1 hour, then add to 100.0 g of the pigment of iron oxide, 1.0 g of defoamer EC 10-26 and 2.0 g biocidal additives - Turama D and stirred for 30 minutes and Then served on pereir ball or bead mill and grind to a milling degree of 60 μm on the "wedge".

Obtaining a water dispersion of a binder. In compounds the tel serves 108,0 g resin ED-20 and 180,0 g epoxiconazole adduct, heating the mixture to 60°C. Then in the dissolver load of 4.5 g of emulsifier OP-10, 1.0 g of defoamer EC 10-26 and 26,0 g of water, stirred for 10 min, then the same portions upload the mixture heated mixture of resin adduct and stirred for 45 minutes

The preparation of an aqueous dispersion composition.

In the mixer load 319,5 g aqueous dispersion of binder and 680,5 g pigment paste, stirred for 1 hour.

Immediately prior to use on 100 weight parts of the composition is administered to 4.2 weight parts of curing agent.

Example 3.

The receiving part consists of three phases, two of which are cooking pasta, fillers and obtaining a water dispersion of the binder may be performed sequentially or in parallel, at the third stage is prepared directly water-dispersed composition.

Cooking pasta fillers. In the dissolver download 81,0 g of water, 1.5 g excipients (dispersant) sodium polyphosphate, 2.0 g of surfactant - emulsifier OP-10, auxiliary substances: 10.0 g of antifreeze, diethylene glycol and 1.5 g of neutralizing supplements - 25% ammonia water, stirred for 1 hour, then add fillers - 350,0 g of chalk and 50.0 g of talc, 1.0 g excipients - defoamer EC 10-26 and 3.0 g of biocidal additives - Turama D and stirred for 30 minutes and Then under the Ute on pereir ball or bead mill and fray before milling degree 60 μm on the "wedge".

Obtaining a water dispersion of a binder. In the mixer serves 112,0 g resin ED-20 and 196,0 g epoxiconazole adduct, heating the mixture to 60°C. Then in the dissolver load of 4.5 g of surfactant - emulsifier OP-10, 1.0 g excipients - defoamer EC 10-26 and 186,5 g of water, stirred for 10 min, then the same portions upload the mixture heated mixture of resin adduct and stirred for 45 minutes

The preparation of an aqueous dispersion composition.

In the mixer load 500 g of the aqueous dispersion of the binder and 500 g of paste, fillers, stirred for 1 hour.

Immediately prior to use on 100 weight parts of the composition is administered to 3.5 weight parts of curing agent.

Example 4.

The receiving part consists of three stages, two of which - the preparation of pigment paste and obtaining a water dispersion of the binder may be performed sequentially or in parallel, at the third stage is prepared directly water-dispersed composition.

Preparation of pigment paste. In the dissolver download 254,5 g of water, 1.5 g excipients (dispersant) sodium polyphosphate, 1.0 g surfactant - emulsifier OP-10, auxiliary substances: 12.0 g antifreeze

- diethylene glycol and 1.5 g of neutralizing supplements - 25% ammonia water, stirred for 1 hour, then to ablaut fillers - 286,0 g of chalk and 31.0 g of talc, 100.0 g of the pigment is titanium dioxide, 2.0 g of defoamer EC 10-26 and 2.0 g biocidal additives - Turama D and stirred for 30 minutes and Then served on pereir ball or bead mill and grind to a milling degree of 60 μm on the "wedge".

Obtaining a water dispersion of the binder.

In the mixer serves 100.0 g of resin ED-20 and 162,0 g epoxiconazole adduct, heating the mixture to 60°C. Then in the dissolver load of 4.5 g of surfactant - emulsifier OP-10, 1.0 g excipients - defoamer EC 10-26 and of 41.0 g of water, stirred for 10 min, then the same portions upload the mixture heated mixture of resin adduct and stirred for 45 minutes

The preparation of an aqueous dispersion composition.

In the mixer load 308,5 g aqueous dispersion of binder and 691,5 g pigment paste, stirred for 1 hour. Immediately prior to use on 100 parts introduce the basics of 2.0 parts hardener.

Example 5.

The sequence of receiving the composition is similar to example 4 with other claims ratios. Immediately prior to use on 100 weight parts of the composition is administered to 10.0 parts by weight of hardener.

The compositions of the water-dispersed compositions and properties of the obtained coatings on the proposed technical solution and isostearates of the Russian Federation No. 2154079 are shown in tables 1 and 2 respectively.

Test results show that the proposed water-dispersed composition dry faster, have greater hardness and high resistance to the effects of oil and corrosive gases while improving the functionality of their use by increasing the temperature range of the application surface to be protected because of the absence in the composition of the resin with a low glass transition temperature.

1. Water dispersion composition for coating, characterized in that it comprises a composition containing a mixture of epoxiconazole adduct obtained by deposition according to the functional groups of epoxy resin and liquid nitrile rubber, and a low molecular weight epoxy resin, surfactant, biocide additives, excipients and water, and the hardener in the following ratio is komponentov composition, wt.%:

with a ratio of 100 parts of the composition of 2.0 to 10.0 parts hardener.

2. Water-dispersed composition according to claim 1, characterized in that the composition additionally contains a pigment in an amount up to 10 wt.%.

3. Water-dispersed composition according to claim 1 or 2, characterized in that the composition additionally contains a filler in an amount of 8 to 40 wt.%.