Polymer composition for protective and decorative coatings

 

(57) Abstract:

Composition as a film-forming contains the waste production of polystyrene emulsion metol, containing 97% of polystyrene and 3% of sodium oleate as an emulsifier, and low-molecular epoxygenase oligomer. The composition includes a plasticizer - esters of phthalic acid, a solvent mixture of ethyl acetate and toluene in their mass ratio of 1:(3 - 4) and the hardener is a mixture of polyamine selected from the group comprising Diethylenetriamine, Triethylenetetramine, polyethylenepolyamine, and product hydrolytic polycondensation - aminopropyltriethoxysilane in cyclohexanone brand ASOT-2 in their mass ratio of 1:(to 8.1 and 10.3). Based on the compositions have an oil-, gasoline-, acid - and alkali-resistant coatings for metal, wood and concrete. table 2.

The invention relates to the production of oil-, gasoline-, acid - and alkali-resistant coatings on metal, wood and concrete in industry and in everyday life.

Known composition using polystyrene (SU, ed. St. 1219629, class C 08 L 25/06, 1986), in which to improve adhesion to metal surfaces injected epoxy resin of the following composition, wt.h.:

Block-polystyrene-oligomyrmex(naproxin) - 3,0 - 4,0

Known also selected for the prototype polymeric composition based industrial polystyrene (SU, ed. St. 1599411, class C 09 D 129/00, 1990), containing a plasticizer, a pigment, a filler and an organic solvent, and uglevodorodyonogo resin under the following ratios, wt.%:

Styracaceae film-forming - 17 - 22

Polymers benzene separation (plasticizer) - 2,3 - 6,5

Uglevodorodnaya resin - 2,5 - 5,5

Pigment - 3,0 - 9,8

Filler - 0,7 - 12,5

Organic solvent - Rest

The composition has good physical and mechanical properties and chemical resistance, but it uses industrial grade polystyrene, as well as components, are difficult for mass production.

The objective of the invention is to develop a composition with good physico-mechanical properties and chemical resistance, but on the basis of more cheap and available raw materials.

This object is achieved by the development of polymeric compositions for protective and decorative coatings containing film-forming, plasticizer, filler, pigment, solvent and hardener. As a film-forming it is irola and low-molecular epoxy oligomer, as the plasticizer - esters of phthalic acid, the solvent is a mixture of ethyl acetate with toluene at a mass ratio of 1: (3 - 4), as a hardener - mixture polyamine selected from the group of polyethylenepolyamines (polyethylenepolyamine, Diethylenetriamine, Triethylenetetramine) with the product of hydrolytic polycondensation - aminopropyltriethoxysilane in cyclohexanone brand ASOT-2 at a mass ratio of 1:(to 8.1 and 10.3) with following contents of the source components. wt.%:

Waste polystyrene - 16,0 - 22,0

Epoxy oligomer - 3,1 - 4,0

Plasticizer - 1,9 - 2,7

Filler - 1,0 - 3,9

Pigment - 3,6 - 7,75

Solvent - 61,6 - 66,8

Hardener - 2,0 - 2,55

As the basis of the composition used polystyrene with = 640000 - 720000 in the form of waste emulsion of polystyrene, representing wet pieces white color remaining after cleaning the reactor. They contain from 0 to 55% water, depending on the duration and conditions of storage and the remains of the emulsifier in an amount of 0.4 to 3.0%. Perhaps the use of waste polystyrene obtained in other ways.

As epoxy oligomer use any industrial epoxygenase resin: ED-20 ED-16, e-40, etc.

As a curing agent, a mixture of polyamine selected from the group of polyethylenepolyamines normally used for curing epoxygenase oligomers: polyethylenepolyamine (Pepa), Diethylenetriamine (DETA), triethylenediamine (THETA), developed earlier by the product of hydrolytic polycondensation-aminopropyltriethoxysilane in cyclohexanone manufactured under the brand of ASOT-2 (TU 6-02-1250-83).

When using dry waste produce dissolution in a solvent mixture of ethyl acetate-toluene in the ratio of 1:(3 - 4) by weight. When using wet waste their dewatering is in the process of preparation of the composition. Dissolution is performed in toluene with simultaneous removal of the toluene azeotrope with water, and then diluted with ethyl acetate to the desired concentration.

Example 1. 44 kg of waste polystyrene with a humidity of 50% is loaded into the reactor with a heater and an anchor stirrer, equipped with a condenser and a separator vessel, and add 49 kg of toluene. The separation vessel is filled with toluene. The temperature in the reactor was raised to 110oC and produce the azeotrope distillate toluene-water to the lack of water in the sample of the distillate from the separation vessel. At the end of the distillation temperature is Alicia residual emulsifier in the waste.

At the end of the distillation the water temperature in the reactor was lowered to 70oC add 12.6 kg of ethyl acetate and produce the final dissolution. To the resulting solution was added with stirring 3.2 kg of epoxy oligomer ed-20, 2 kg of dioctylphthalate, 2 kg of talc, 3.2 kg of titanium dioxide (TiO2) and 3.9 kg of chromium oxide (Cr2O3). The temperature of the mixture gradually reduced to 25 - 30oC.

The resulting mixture was placed in a ball mill and produce a dispersion with 30 - 40oC to the degree of dispersion of 20 to 30 μm on grindometer. Obtained a suspension of the green color filter and serves on packing.

Before applying to the resulting composition add a mixture of 1.87 kg ASOT-2 and 0.23 kg of polyethylenepolyamine. The resulting composition with a hardener must be used within 1.5 - 2 hours

Example 2. 15,6 kg dry waste polystyrene loaded into the reactor, add 50 kg of toluene and 15.6 kg of ethyl acetate and dissolve the polystyrene under stirring at 70 - 75oC.

To the resulting solution was added to 3.9 kg of epoxy oligomer e-40, 2,34 kg of dibutyl phthalate, 3,9 kg of chalk, 5.5 kg of titanium dioxide and 0.78 kg blue phthalocyaninato pigment. The process produced analogously to example 1.

Formulations of the compositions and properties of the obtained coatings are given in table. 1 and 2.

As seen from the above examples, the coatings obtained on the basis of the proposed compositions exhibit good adhesion and chemical resistance, and high physical-mechanical indicators, not inferior, and in hardness few superior received the prototype.

At the same time, the use of waste polystyrene solves the problem of their utilization, allows cheap protective-decorative coating of high quality without pre-treatment of waste.

Polymer composition for protective and decorative coatings, including film-forming, plasticizer, filler, pigment and a solvent, characterized in that it contains a film-forming waste production of polystyrene emulsion method, containing 97% of polystyrene and 3% of sodium oleate as an emulsifier, and low-molecular epoxygenase oligomer, as a plasticizer - esters of phthalic acid, the solvent is a mixture of ethyl acetate and toluene in their mass ratio of 1 : (3 - 4) and further comprises a hardener - mixture polyamine, selected from the group of vklyuchayuschimisya in cyclohexanone brand ASOT-2, when the mass ratio polyamine and hydrolytic polycondensation product brand ASOT-2 1 : (8,1 - 10,3), in the following ratio of the components of the composition, wt.%:

Waste production of polystyrene emulsion method - 16,0 - 22,0

Low-molecular epoxygenase oligomer - 3,1 - 4,0

Plasticizer - 1,9 - 2,7

Filler - 1,0 - 3,9

Pigment - 3,6 - 7,75

Solvent - 61,6 - 66,8

The hardener is a 2.0 to 2.55 and

 

Same patents:

The invention relates to the field of development of coatings based on thermosetting powder compositions used for corrosion protection of various metal structures, including industrial and domestic refrigerators, microwave ovens, medical equipment, building construction, oil and gas, metal furniture, radiators, gas stoves, spare parts, etc

Epoxy putty // 2100394

The invention relates to techniques for the application of polymer coatings on the inner and outer surfaces of the products, for example for the manufacture of inner surfaces of the cylinders

The invention relates to low-toxic, does not contain chromates, anti-corrosion primers under urethane, Acrylonitrile, acrylic and epoxy coatings for corrosion protection of aircraft products

The invention relates to the production of epoxy composites for corrosion protection coatings on metals used in hydrogen sulfide-containing media (oil products)

The invention relates to coatings industry and is designed to protect concrete, metal and aspectoriented surfaces from weathering and destruction

The invention relates to epoxy paint compositions for protective and decorative coatings of metal, brick, asbestos cement, concrete, wood, glass, ceramics

The invention relates to the field of protecting metals from corrosion and can be used in engineering and other industries for painting products, mainly from aluminum and magnesium alloys

The invention relates to compositions for coating and can be used for corrosion protection of metal structures, pipelines, etc

The invention relates to compositions for anti-corrosion coatings using copolymer-based bottoms V rectification styrene copolymer KORS), and is intended primarily for the protection of metal (including steel) structures operated in atmospheric conditions, as well as for protection of concrete and wooden structures exposed to weathering

The invention relates to paints, varnishes and lacquers that are designed to receive them, based coating that protects from external influences the surface of metals from corrosion, wood from rotting, concrete and plastics from erosion and aging, can be used as a decorative coating

FIELD: varnish-and-paint industry.

SUBSTANCE: invention relates to paints based on polystyrene film-formers, which are used to protect metallic, concrete, ceramic, wood, and asbestos-cement surfaces against atmospheric corrosion in various industrial fields. Process comprises dissolution of polystyrene in solvent followed by stirring it with fillers and pigments while simultaneously affecting it by ultrasonic oscillations with frequency 150-250 kHz.

EFFECT: reduced polystyrene dissolution time, improved spreading capacity, increased (thrice) strength of film, and enhanced (twice) waterproofness.

1 tbl

FIELD: construction.

SUBSTANCE: composition for finishing of concrete and plastered surfaces contains polystyrene in amount of 2.25-3.2 wt %, solvent in amount of 16-23.55 wt %, 22.81-25 wt % of chalk, as filler it contains mixture of sand and clay - colour sand in amount of 48.24-58 wt %, as surfactant it contains additive OP-4 in amount of 0.08-0.1 wt % and 0.37-0.4 wt % of disperser additive TELAZ.

EFFECT: increased adhesion and frost resistance of coats.

2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: polystyrene paint composition contains the following, wt %: film-forming agent - polystyrene or derivatives thereof 1-9, pigments 1-20, colloxylin 5-15, alkyd resins 10-15, plasticiser 1-15 and solvents - the balance.

EFFECT: obtaining coatings which provide high degree of protection from corrosion of components and surfaces in conditions of atmospheric exposure or exposure to a liquid or moist environment.

2 ex

FIELD: chemistry.

SUBSTANCE: polystyrene paint composition contains a film-forming agent - polystyrene and/or derivatives thereof, colloxylin, a solvent, pigments, a plasticiser, alkyd resins and additionally a dispersant.

EFFECT: obtaining a highly homogeneous coating which provides high degree of protection from corrosion of components and surfaces in atmospheric or liquid medium exposure conditions.

6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of polymer compositions based on acrylonitrile butadiene styrene for coating articles made of wood and medium-density fibreboard, which provide effective protection from abrasive wear, aggressive moisture action, high chemical resistance to resol resins and esters.

EFFECT: improved surface quality, easy extraction of models and rods and recycling acrylonitrile butadiene styrene wastes produced by a 3D printer, curable at room temperature in a relatively short time.

1 tbl

FIELD: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.

SUBSTANCE: claimed composition contains: butadiene-styrene thermoelastomer, diepoxy resin, filler (carbon black), solvent (toluene), pigment filler, containing aluminum and iron hydroxides and additionally indene-coumarone resin, waterproofing agent (liquid polymethylsiloxane), and stabilizer.

EFFECT: composition with high adhesion to concrete and metal surface and improved strength.

2 tbl

FIELD: corrosion protection.

SUBSTANCE: protective ground paint for painting coiled metal and electrochemical protection of bridges, power lines, and other long term-use metallic structures contains, wt %: epoxide resin 9.0-29.0, polyamide resin 3.0-9.5, pigment 23.0-36.0, zinc nanoparticle preparation 3.0-5.0, filler 13.0-23.2, and solvent - the balance. Zinc nanoparticle preparation is introduced in the form of (0.4-4)x·10-3 M solution in isooctane.

EFFECT: enhanced protective properties.

2 tbl, 4 ex

Up!