SU979466A1 - Polyurethane spread coating composition - Google Patents

Description

(54) POLYURETHANE COMPOSITION FOR COATINGS

12

The invention relates to the production of coatings for various purposes, for example coatings for sports facilities (treadmills, sectors for training and throwing), etc., based on a polyurethane composition of injection molding type.

A known polyurethane composition for polyether-based coatings and the reaction product of an oxyproklylated trimethylolpropane and toluene diisocyanate. The composition also contains organo-mercury catalysts and a chain breaker regulating the hardness of coating 1.

However, this method of hardness control is unreliable.

Closest to the invention to the technical essence is a polyurethane composition for coatings of the casting type, including a hydroxyl-containing component, an isocyanate compound, a catalyst, a filler, a zeolite, and aerosil 2.

This composition is used as a binder to formulate

sports carpets Zyoshov.

-. as a hydroxyl-containing component, the known composition contains polyols with the functionality of the FILLING TYPE

53 (oxyalkylated glycerin, glucose, castor oil) and a low molecular weight diol (butanediol, ethylene glycol).

The resulting polyurethanes have good tensile strength (15 kg / cm), but low tear strength, and when using polyols with functionality 3 - increased hardness.

The purpose of the invention is to improve the physical and mechanical properties of coatings.

This goal is achieved by

15 that a polyurethane composition for a casting type coating comprising a hydroxyl-containing component, an isocyanate component, a catcher, a filler, a zeolite, a pigment and aero20 forces, as a hydroxyl-containing

the component contains a mixture of polyether triol based on ethylene oxide and propylene oxide, containing up to 20% hydroxyethyl end groups,

25 with mol.mae. 3000-6000, simple polyetherdiol based on propylene oxide, mol. Mae. 1000-2500 with a weight ratio equal to 1: 0.5-3, and glycol with mol.mae. 62-150 in the following ratio of components, parts by weight: A mixture of simple polyetherdiol with mol.mae, 3000-6000 and simple polyetherdiol with mol. May 1000-2500 with a weight ratio equal to 1: 0.5-348-65 Glycol-mol%, 62-150. 1-3 Filler 26-44 UeoJjHT6-10 Pigment 0.2-5, Aerosil 0.1-0, Isocyanate component 8-20 Catalyst 0.01-0.1 The isocyanate component is a difunctional isocyanate or its prepolymer with glycols and diols. The polyol and isocyanate components in the preparation of the composition are mixed in a ratio of NCO / OH equal to 1.2-1: 1. Introduction to the composition of diols with a mole, May. 1000-2500 reduces the concentration of urethane groups, which provides the necessary level of material hardness, and the residue of the diol of the general formula (CHCHjCHO) f integrated into the polyurethane chain, allows increasing the material's hydrophobicity and atmo-ferrite toe ratio, and the selected ratio of triols with terminal hydroxyl groups and diols with terminal secondary hydrostrong groups ensures sufficient capacity of the polyol blend and maintaining the mass between the washing units at a level of 6000–8000 ensures a constant physical condition. Chania monolithic polyurethane. The use of this composition allows to obtain a material with a tensile strength of 18 kg / cm, relative elongation of 150%, a Shore A hardness of 48-58 units, and a size of -10 kg / cm (according to GOST 262-73). Example 1. Polyol component consisting of 48 parts by weight mixtures of triol with mol.mae. 3000 and terminal primary hydroxyl groups and a diol with a mole, May. 2500 in a weight ratio of 1: 3.1; 1.4 weight, h butav diol, 6.7 wt.h. zeolite, 44 vee.h filler (talc); 0.2 weight.h. the edge of his iron oxide pigment and 0.1 weight.h. Aerosil, cured 8.3 weight.h. 4, 4-diphenylmethane diisocyte with the ratio NCO: НО / 1.05: 1 in the absence of 0.03 weight parts. dibutyldilaurate nata tin and after curing, the material is obtained with a tensile strength of 18 kg / cm j relative elongation of 250%. EXAMPLE 2. Polyol component, consisting of 64.9 parts by weight. mix triol with mol.mae. 5000 and terminal wicked hydroxyl groups (La Lol 5003-2B1.0) and diol e mol.mae. 1000 (Laprol 1052) in a weight ratio of 1: 1.2; 1.77 weight.h. diethylene glycol, 5.9 ve.h, zeolite, 23.6 weight.h. talc, 1.18 vee. the pigment of example 1; 0.29 weight.h. aerosil and 2.36 weight.h. zinc oxide, is cured at the ratio of NCO: НО / 1.05: lj20 of a prepolymer based on diethylene glycol and an excess of toluene diisocyanate (emei 2.4 and 2.6 isomers 80:20) with a 28% content of NCO - groups in 0.1% vee.ch. diazabicyclo octane and, after curing, the material is obtained by firmness of the net — at a pressure of 28 kg / s, a elongation at break of 320%, and a Shore hardness of 48 units. and durability at tearing 12 kg / cm. The weight loss after 40 minutes of treatment with a cylinder with spikes (300 rpm) imitating the use of coatings for sports facilities is 2% without the addition of diol e mol. Mae. 1000 (10%). Froze The polyol component, consisting of 50 weight, h. mixes. triola with mol.mae. 6000 and terminal primary BUT groups and the diol with mol. May 1000 (polyfurite) in the ratio of 1: 0.5; 3 vee.ch. dipropylene glycol, 10 wt. zeolite, 31.3 wee. talc, 5 weight.h. pigment (chromium oxide) and 0.7 wee.h. aeroeil, cured 15.4 wee. 4, 4-diphenylmethane diisocyanate in the presence of 0.03 weight parts. dibutyldilaurinate tin and get a polymer with a tensile strength of 20 kg / s, elongation at break of 200% and a tear of 10.2 kg / cm. Polyurethane composition for coatings of casting type, including a hydro-alkaline component, Isocyanate component, catalyst, filler, zeolite, pigment and aerosil, o, tl and ch ya so that, in order to improve the physicomechanical properties of the surface, As a hydroxyl-containing component, it contains an eei proetoy polyethertriol based on organic ethylene and propylene oxide containing up to 20% terminal hydroxyethyl groups, with. mol. mae. 3000-6000, simple polyether diol based on propylene oxide mol.mae. 1000-2500 with a weight ratio equal to 1: 0.5-3, and glycol with a mole, May. 62-150 at the next ratio of components, b.ch .: A mixture of simple polyetherdiol indicated by BHiiie, mol. Ma. . 3000-6000 and the projected polyetherdiol indicated 5 above, mol. Mae. 1000-2500 with a weight ratio equal to 1: 0.5-348-65 Glycol with mol.mae. 62-1501-3 Filler26-44 Zeolite6-10 Pigment 0.2-5-5 9466 Aerosil 01-07 Isocyanate component 8-20 Catalyst, 0.01-0.4 References. taken into account in the examination of 5 1. US Patent 3272098, cl. 94-7, published. 1965. 2 ,. Patent GDR 108685, class 39a 21/00, published 1972 (prototype).

Claims (1)

The formula of the invention g component, catalyst, zeolite, pigment and aerochemically improved physical and mechanical quality Polyurethane composition for casting type coatings, including a hydroxyl-containing component, an isocyanate filler, strength, about. t l and that, for the purpose of the properties of the coatings and the hydroxyl-containing component, it contains a mixture of simple polyether triol based on ethylene oxide and propylene oxide containing up to 20% of terminal hydroxyethyl groups, with ‘mol. 3000-6000, polyether diol based on propylene oxide with a mol. 1000-2500 with a weight ratio of 1: 0.5-3, and glycol with mol.mass. 62-150 in the following ratio of components, parts by weight: A mixture of simple polyether triol above, with a mol. Wt. . 3000-6000 and simple _polyetherdiol, indicated 979466 above, with mol. 1000-2500 by weight ratio 1: 0.5-3 48-65 Glycol with mol. 62-150 1-3 5 Filler 26-44 Zeolite 6-10 Pigment 0.2-5.0 Aerosil 0.1-0.7 Isocyanate component 8-20 Catalyst .0.01-0.4