CS262139B1 - Surface leveling, leveling and defoaming agent, in particular casting compositions and plastic concrete - Google Patents

Abstract

The solution consists in using monocyclic and/or bicyclic terpenes, especially fullene, turpentine, limonene or their technical mixtures dipentene and turpentine, as a means for leveling and defoaming the surface, especially of cast flooring compositions and plastic concretes.

Description

BACKGROUND OF THE INVENTION The present invention relates to a composition for leveling, leveling and anti-foaming surfaces, in particular, for floor covering compositions and synthetic resin-based plastics.

In the production of cast floors, a smooth, sintered and homogeneous surface is generally required, free of color inhomogeneity, bubbles and surface defects caused by uneven surface tension. In many cases, in the production of gravel floors, iterrac surfaces, pliast concrete or plastmalt, a sintered and smooth, relief-free surface is required for the spreading and smoothing tool used.

According to the prior art, sprays with aromatic hydrocarbons, in particular xylene and fractions of a similar boiling range, are used for this purpose. Aromatic hydrocarbons give good results in applications where bonding floors, plastics, etc. are unsaturated polyester, polyurethane or epoxy resins.

A serious disadvantage of using aromatic hydrocarbons for leveling, leveling and antifoaming of building surfaces is the considerable toxicity of aromatics and the relatively long-term evaporation of aromatic residues from the surface of the work. It has been found that even one year after application, up to 100 mg / m ³ of xylenes can be identified in the atmosphere above the poured floor. If the construction work is carried out in communal areas, there is a danger of chronic exposure of the body to persons by vapor. Similar results have been obtained with the substitution of aromatics with ketones, esters or ether alcohols whose toxicity is also unfavorably high. Other solutions to the problem are not known in the art.

Based on extensive experimental work, we have found that a solution to the technical problem can be fully achieved if the composition of monocyclic or bicyclic terpenes, in particular pinene, terpinene, limonene or mixtures of these substances, such as Idipenten or turpentine.

'The substances mentioned may, where appropriate, contain up to 1% by weight. % surfactants such as:

silicone oils, polyethylene oxide derivatives, low molecular weight polymers or copolymers of acrylic acid esters, urea-formaldehyde or melamine-formaldehyde polycondensates, or fluorocarbons.

In some cases it is preferred to add up to 25% w / w to the terpenes. low-toxic alcohols such as: cyclohexanol, isomeric amylalkobdly or isohexanols, propylthylglutophthol ethers and the like.

A significant advantage of the composition according to the invention is low: toxicity, easy evaporation and favorable orgainoleptic properties (forest fragrance) lacking aromatics. however, good results are also obtained in the treatment of building surfaces in which other organic resins are binder.

Example 1

A homogeneous flooring composition comprising:

parts by weight dian epoxy resins having an average molecular weight of 392 parts by weight. 2-ethylhexyl acrylate, parts by weight % of an adduct of diethylenetriamine with a low molecular weight epoxy resin having an average equivalent weight of 44 parts by weight; ground fused quartz, parts by weight ferrous ocher,

100 ppm of silicone oil is applied to a dry cementitious substrate and distributed with trowels. After 10 minutes, the surface is sprayed with a turpentine spray in an amount of about 10 to 30 g / m ² . After 24 hours the room is ventilated, the floor surface is matted, glossy and smooth with a faint turpentine odor. At 7 days, the amount of turpentine in the air above the floor is less than 25 mg / m ³ .

Example 2

A homogeneous flooring composition comprising:

parts by weight epoxy resins having an average molecular weight of 488; dibutyl phthalate, parts by weight dibutyl maleate; F 20 fillers, parts by weight red and red,

7.5 parts by weight The diethylenetriamine is applied to a dry cementitious substrate and the trowels are distributed. Immediately after divorce, the surface was sprayed with dipentene spray containing 0.01% silicone oil and 5% cyclohexanol. After 24 hours

262133 makes the floor surface smooth, matt and glossy. After 14 days, 5, mg / m ^{3 of} dipentene was measured in the air above the floor as d- and 1-

Claims (1)

Use of monocyclic and / or bicyclic terpenes, in particular pinenes, iterpines, limonenes or their technical mixtures of di-limoinene and less than 1 mg / m ³ cyclohexanol. SUMMARY OF THE INVENTION Pentene and turpentine as a means for floodplain, pickling and surface de-staining, in particular pouring flooring compositions and plastics.