CS200025B1 - Material based on polymers and/or copolymers of vinyl chloride modified by polyurethan - Google Patents

Description

(54)

Polymer-modified polymers and / or copolymers of vlpylohloride

The invention relates to a polyurethane-modified mass on the backbone of polymers and / or a blend of copolymers of wooll chloride and to be adhered to at low temperatures. The properties of the mass can be varied in the form of the cargo polymer, the mass ratio of the polymer to the base of the wool chloride and the polyurethane, as well as the number and type of additives.

Polyurethane-Modified Polymeric and / or Copolymer Polymeric Vinyl Alloy Content Contains Heureously Distributed: 5 to 100 parts by weight of polyurethane and / or polyurethane-paste, 35 to 65 parts by weight of ammonium chloride; parts by weight of the meat, in particular, 0.01 to 0.5 parts by weight of the segments and 0.5 to 2.5 parts by weight, per 100 parts by weight of polyvinyl chloride.

200 025

SUMMARY OF THE INVENTION The present invention is based on improved properties of low temperature polymers based on poly (vinyl chloride) and / or copolymers by powdered pelyurethane and / or polyurethane additions with the addition of materials prepared by heat treatment of the material, % polymers based on vinylohloride and polyurethane, as well as the amount and type of additives.

Microfiber polyvinyl chloride-based products lose some of the desired properties due to their long-term use, and is particularly disadvantageous, especially for the manufacture of paints. Thus, the polyvinyl chloride chloride is capable of producing a modified polyvinyl chloride with the desired meohanlocoluminescence, sustained at low temperature. According to (cf. U.S. Pat. No. 1,944,310), the polyurethane elastomer is prepared and diapered in a plasticizer, and this is then mixed with polyvinyl chloride and other excipients. The mixture obtained is heat-treated to the mass with the desired heat. Prl lnem postupe / J. Slastoplastios Vol.

13, 157 (1957)], starting from pelyurethane granulate and a polyvinyl chloride mixture (containing a plasticizer, stabilizer and lubricant), which is then homogenized in an extruder.

Polyurethane-modified material based on polymers or copolymers of vinyl chloride which is suitable for flexible products according to the present invention contains synthetic macromolecular substances as well as excipients homogeneously cold distributed, comprising:

up to 100 wt. parts of polyurethane and / or polyurethane ammonium powder in the form of a powder having a sastlo size below 0.6 mm to 65 wt. up to 2.5 wt. parts stabilizer »

0.6 to 1.5 wt. parts of lubricants, especially. waxes

0.01 to 0.05 wt. parts of the segments and

0.5 to 2.5 wt. parts of fillers per 100 wt. parts of polyvinyl chloride *

The composition is prepared by producing a mixture of polyvinyl alcohol chloride and / or a copolymer of a glazing agent, a stabilizer, a lubricant, and an ointment of a mixture of polymers or a mixture of polyurethane materials and a powder / powder mixture in one stage. to 130 ° C and sprayed in a conventional manner. For the preparation of this mass, all known types of polyvinyl alcohol chloride which are known as emulsion, cepolymers of vinyl alcohol and olefin, vinyl acetate and other monomeric compounds are suitable,

It requires approximately the same size of Sastlo as that of polyvinyl chloride to achieve the desired properties ea from the polyurethane elastomer. Such a type of pelyurethane in the state of preparation and obtained, in particular, from a prepolymer containing 1.5 to 2.5 free NCO-groups is dispersed in a reactive medium, e.g. into water in the presence of a suitable dispersant. The selection of convenient raw materials for the preparation of the polyurotone and / or the polyurethane material, as well as the method of preparation, will significantly affect the properties and process of the final product.

For the production of polyurethane-modified mass, practically all kinds of polyvinyl light polymers, as well as primary, secondary or pelymic wetting agents, are suitable. Preferred are the phthalic, adipic or estaxy acid estaxy acids with aliphatic alcohols, thalliary phosphates, and trlalkylphosphates. The most widely used are dibutyl phthalate, dioctyl phthalate, alkyl esters of adipic acid or eebakovoy. Combinations of low-strength traps with low secondary nukes are also used, such as e.g. e fatty acid chains, with an opoxified soybean oil butyl ether and others.

The polyvinyl chloride stabilizers belonged to the group of substances. In the preparation of the polyurethane-modified mass, suitable calcium-salt salts, calcium-salt salts, baxnate-cadmium stabilizer, lead salts, calcium stearate or other known stabilizers in an amount of 0.5 to 6% by weight, organic organic phosphites and epomides may also be used. polyurethane stabilizers, e.g. carbodiimides or compounds having similar properties. Another group consists of lubricants which are added in an amount of 0.5 to 2% by weight. Functionally improve flow properties during spraying. In particular, fatty acid soaps, various waxes such as e.g. montan wax, barium salts, calcium salts, polyethylene, and many other compounds, either individually or in various mixtures. As auxiliaries, it is possible to add the chelates, quenchers, fillers and pigments.

The final polyurethane-modified polymer or copolymer vinyl chloride is obtained from the individual components, homogeneous on a typical type of gonogenic apparatus and conditions suitable for these devices such as e.g. mixers, kneaders, etc. The individual components are added either sequentially or in certain assemblies, and all components can also be pre-dispensed at once and advantageously for premixing. The homogenized mass can then be subjected to a treatment of e.g. graanláoiou.

It is an essential advantage of the invention that a material having the desired mechanical properties, even after prolonged exposure to low temperatures, has been formulated in the raw materials available in the commercially available raw materials, without the need for a special apparatus for its manufacture. From the economic point of view, the choice of the raw materials used does not significantly affect the price of the final products, expanding the field of use of polyvinyl chloride and vinyl chloride copolymer to areas where the use of polyvinyl chloride and vinyl chloride copolymer is still unsuitable.

- 3 Example 1

A 6 L high pressure stainless steel mixer, an electric heated, equipped with a temperature regulator and a high-speed anchor grinder of 2800 rpm was used to mix the components. 1000 g of a slurry of halide chloride (Slovinyl 683) at a K -value of 68, a fluorine content of 56.7% by weight, a bulk density of 560 kg / m @ 2, and 200 g of a talcum powder were dispensed through a borehole and into a 90 ° C sealed mill. % polyurethane elastomer having a particle size of 95 wt. in the range of 0.1 to 0.4 qn with a bulk density of 450 kg / nP, a melting point of 150 ° C and a relative viscosity of 1 µl of the solution in dimethylformamide 2.14. Polyurethene was prepared by dispersing a 1.7 wt% prepolymer. free NCO groups into the aqueous phase, filtration and drying at 60 ° C. Next, 5 g of montan wax with a pour point of 75 to 85 ° 0, 4 g of parole glycerin ester eco lubricant and 30 g of zinc-calcium stabilizer were metered into the mixer. The mixture was stirred briefly and after addition of 400 g of a mixture of plasticizers of dioctyl adipate, dioctyl phthalate, dibutyl phthalate and a polymeric plasticizer based on adlpic acid ester in wt. ratio 3: 1, 5! 1: 2, the blender was sealed and the contents perfectly homogenized. During the mixing, the motor load increases and the temperature rises, after the temperature has reached 75 ° C the mixing is complete. The contents of the mixer were spilled sparingly onto bald trays and not bent in a thin layer

I chilled ’. Spraying the obtained dry mixture on a rolling machine at 175 ° C for 5 minutes produces a film of 0.6 mm thickness and pressing at 175 ° C at a pressure of 300 atp for 5 minutes. 6.5 '' depth test specimens · The material has the following physical-meohanical properties: tensile strength 14 MPa, elongation 280 fi, hardness * 90 ° Sh, overlapping to Mattia over 300,000 loops, overlapping according to de Mattia at - 20 ° C 150,000 loops.

Example 2

Polyurethene modified polyvinyl chloride was prepared as described in Example 1 by mixing 1000 g of polyvinyl chloride, 200 g of polyurethane, 800 g of a plasticizer mixture, 30 g of a calcium-calcium stabilizer, 10 g. montan wax with a mp of 75-85 ° C. The material has a tensile strength of 12.6 MPa, an elongation of 340 hardness ° ° Sh, a break through to Mattia over 300,000 bends, a break through at a temperature of - 20 ° C 200,000 bends.

Claims (2)

OBJECT OF THE INVENTION! · 1 '1' · Polyurethene-modified mass based on polymers and / or alobo copolymers of vinyl chloride, contains auxiliary substances, characterized in that it contains homogeneously distributed 5 to 100 wt. Polyurethane / free polyurethane-woven parts in the form of powder with a slack of rust below 0.6 mm 35 already 65 parts by weight 1 to 2.5 parts by weight of a stublllolator 0.6 already 1.5 wt. parts of mauadllel, especially waxes 0.01 already 0.05 wt. parts of the segments and 0.5 µf ~, 5 wt. parts by weight of 10 wt. parts of polyvinyl alcohol.