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INVENTION
Russian Federation Patent RU2287506

ACRYLIC COMPOSITION FOR FINISHING WORK

Name of the inventor: Kuzmitsky Gennady E. (RU); Scrubs Vasily G. (RU); Fedchenko Valeriy (RU); Tereshatov Alexander (RU); Elena V. Fedchenko (RU); Victoria V. Fedchenko
The name of the patentee: Federal State Unitary Enterprise (FSUE) "Perm Plant named after Kirov."
Address for correspondence: 614113, Perm, ul. DI. Halperin, 11, FSUE "Perm Plant. Kirov", gene. Director GE Kuzmitsky
Starting date of the patent: 2005.04.27

The invention relates to the field of construction, namely, the production of construction of composite materials based on acrylic resins, used in internal and external decoration of industrial and civil purposes, in particular for the production of self-leveling floor coatings, protective and decorative materials, potting compounds. Acrylic finishing composition comprising a binder, a filler - quartz sand, plasticizer, curing agent, water, contains as binder 40-60% aqueous dispersion of a copolymer of butyl acrylate, methyl methacrylate and methacrylic acid as plasticizer - tributyl phosphate, as a hardener - Portland cement M400 and additionally acrylic urethane associative thickener "Polifob TR-117" in the following ratio, wt.%: 40-60% aqueous dispersion of butyl acrylate copolymer of methyl methacrylate and methacrylic acid 15,0-30,0, acrylic -uretanovy associative thickener "Polifob TR-117" 0.1-0.2, quartz sand 35,0-50,0, tributyl 0.15-0.25, Portland cement M400 8-12, the rest water. The composition may further contain a pigment in an amount up to 11 wt.%. The technical result - increasing the mechanical strength of the coating and its adhesion to the surface, reducing water absorption.

DESCRIPTION OF THE INVENTION

The invention relates to the field of construction, namely, the production of construction of composite materials based on acrylic resins, used in internal and external decoration of industrial and civil purposes, in particular for the production of self-leveling floor coatings, protective and decorative materials, potting compounds.

Known polymer-composite / Bazhenov YI Concrete Technology. - M .: Higher School, 1978, s.400-401 / for finishing the concrete surface with the following composition, wt.%:

Known composite material used for the surface treatment of building materials / Patent №2090530 MKI C 04 B 26/06, publ. 09/20/1997 / comprising the following components, wt.%:

Polimermineralnaya This composition has high adhesive strength and heat resistance, but the use of waste as an emulsion polymer based on polystyrene polystyrene safe from an environmental perspective view of the toxicity of the styrene polymer.

The closest to the proposed invention as to technical essence is a marble composition for finishing work / Patent RU №2219140 IPC C 04 B 26/06, publ. 20.12.2003 / adopted by the authors as the prototype.

The composition contains, wt.%:

Copolymer binder:

Fillers:

plasticizer:

Fixer and hardener:

However, this composition has insufficient adhesion to the surface of the composite layer has a low strength properties (impact strength, tensile strength and compression) and high water absorption.

Technical problem to be solved in the present invention is to provide a building acrylic composition with high mechanical properties, improved adhesion to the surface of the composite layer, and a reduced water absorption.

The solution of the above problem is achieved by the fact that the acrylic composition for finishing works, comprising a binder, a filler - quartz sand, plasticizer, curing agent, water, a binder composition comprising 40-60% aqueous dispersion of a copolymer of butyl acrylate, methyl methacrylate and methacrylic acid as tributyl phosphate plasticizer comprises, as hardener - M400 Portland cement, in addition, it further comprises an associative type thickener akriluretanovy "Polifob TR-117", at the following ratio between components acrylic composition: wt%.

The composition may further contain a pigment in an amount up to 11 wt.%.

Used in the claimed composition of 40-60% aqueous emulsion of butyl acrylate copolymer of methyl methacrylate and methacrylic acid is commercially available under the brand name "Deacon" TU-2241-039-07507802-2001.

40-60% aqueous emulsion of the acrylic copolymer prepared by emulsion polymerization of butyl acrylate, methyl methacrylate and methacrylic acid in the presence of a water-soluble polymerization initiator and an anionic emulsifier.

Acrylic copolymer dispersion is a component providing binding and film forming properties of the material, but also good transparency and weather resistance of the coating.

As a thickener to improve the rheological properties of the composition comprises acryl-urethane thickener of the associative type "Polifob TR-117," company "Union Carbide", in the form of water-soluble polymers composed of acetaldehyde 0.001%, ethyl acrylate, 0.002% polymer additive 40% and 60% water. It is a viscous, whitish liquid (health certificate on the TR-117 Polyphobe company "Union Carbide").

Used as a filler quartz sand of various fractions (GOST 90-77-92, GOST 15045-78, GOST 22551-77) gives the composition strength, density. Portland cement M400 (GOST 10178-85) is used as a hardener.

As the plasticizer and the defoamer used tributyl (6-02-73384 TU), the presence of which has an effect on the mechanical properties of the coating, making the material more ductile.

The technological process of manufacturing of building compositions based on acrylic resins consists of the following operations:

- Preparation of a mixture of liquid components (dispersion, the plasticizer, thickener);

- Preparing a mixture of dry components (quartz sand, cement, pigment);

- Mixing of the liquid and dry components until the mixture is completely homogeneous.

Tests of samples of finished products are carried out by standard known procedures.

The composition of the claimed composition was prepared under laboratory conditions and tested over the entire range of each component. For comparison, similar tests were performed for the prototype composition.

Technical nature of the invention illustrated by the following experimental data.

Specific examples of compositions with different contents of composition components in comparison with the prototype are presented in Table 1.

Test results of specimens obtained construction compositions shown in Table 2.

From the data shown in Table. 2, it is seen that the best physical and mechanical indicators are samples of the material having a composition included in the inventive range (formulations 2, 3, 4).

The compositions of Examples 1 and 5 with extremely high values ​​of quantitative content of components have inferior characteristics compared to samples of the claimed composition as Example 1 shows lower adhesive strength of the composite layer, and Example 5, a low water resistance.

As follows from the table data, acrylic composition of the invention is superior to known, taken as a prototype, according to strength parameters such as impact strength, tensile strength and compressive strength and adhesion, and, while providing a high level of water resistance, ie The invention solves the problem.

For example, the use of the proposed technical solution allows more than 50% increase in adhesive strength material as compared to the prior art and 25% - impact strength.

Thus, the acrylic composition is designed for finishing work, which provides a coating with a high mechanical strength. The low water absorption of the claimed composition allows you to keep a high level of physical and mechanical properties of the coating for a long period of operation, and thereby improve its durability.

Established acrylic composition for finishing works in a wide range of its use is non-toxic, fireproof, is preparing for a simple technology with standard equipment that is easy to use and retains its technical characteristics during storage.

CLAIM

1. Acrylic finishing composition comprising a binder, a filler - quartz sand, plasticizer, curing agent and water, characterized in that the binder composition contains 40-60% aqueous dispersion of a copolymer of butyl acrylate, methyl methacrylate and methacrylic acid as plasticizer It contains tributyl phosphate as hardener - Portland M400, moreover, the composition further comprises an acryl-urethane associative thickener "Polifob TR-117", with the following component ratio, wt.%:

2. Acrylic finishing composition according to claim 1, characterized in that it further comprises a pigment in an amount up to 11 wt.%.

print version
Publication date 06.04.2007gg

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