SU527459A1 - Composition based on polyurethane thermoplastic elastomer - Google Patents

Description

(54) COMPOSITION ON THE BASIS OF POLYURETHANE THERMOELASTOPLAST

one

The invention relates to the production of plastics, film materials and artificial leather, it can be used for the manufacture of materials for various purposes, with enhanced performance characteristics.

A known composition based on a polyurethane thermoplastic elastomer, comprising a stabilizer and targeted additives 1.

A composition based on polydienurethane and a stabilizing mixture comprising organic phosphorite and dimethyl (paraphenylaminophenoxy) silane (product C-1) is known. The composition may additionally contain target additives. A disadvantage of the known composition is its low stability when exposed to elevated temperatures, oxygen and ultraviolet rays.

The purpose of the invention is to increase the stabilization effect. To achieve this goal, the composition contains as a stabilizer a mixture of cyclic phosphorous acid based on bisphenol of the formula

one

Lr cn2-YV 5b

t RsfjC-VV

CftjCHj

di- (3-p-cyclohexylamino-2-hydroxypropyl) sulfide and benzophenone. The composition also contains known target additives, such as pigments, fillers.

According to the invention, the composition contains the following components (in weight parts);

Polyurethane thermoplastic elastomer 100

Bisphenol cyclic phosphorous acid 0.2-2

Di- (3-l-cyclohexylamino2-hydroxypropyl) -sulfide0.5-3

Benzofeion 0,5-1

The composition may also contain targeted additives, such as fillers, pigments.

Example. To the pre-dried oligoester, oligoxytetramethylene glycol mol. weight. 1000 added the calculated amount of 4,4-dnfenilmetand1P13ocyanate and simulate 1 hour at a temperature. The resulting amount of 1,4-butnleblccol n is mixed vigorously with 8-10 mln. Obs, its ratio of isocyan groups to hydroxyl groups varies from 1.00-1.15. In the liquid composition at a temperature

Component

Polyurethane thermoplastic elastomer

The condensation product of phenol with styrene (phosphite P-24)

Product C-I

Cyclic phosphorous acid

Di- (3-β-diclohexylamino-2-hydroxypropyl) sulfide

Bisbenzophenone

The test results of the films before and after light and teil aging under the lamp As can be seen from the table. 2 Daniyol, iolpentane films prepared on the basis of the proposed polymer composition are characterized by increased operation at 70-80 ° C.

Plenkp is formed on rollers by standard procedure, kept for two days and 25 ° С, subjected to standard tests.

In tab. 1 shows the formulation of polymer films on the basis of polyurethane elastomers.

Table 1

Recipe, weight. h

offered

control

prototype

100 0.5

100

100

2.0

0.5 1.0

1.0

PPK-7 for 78 hours at a temperature of 70 ° C are given in Table. 2

table 2

The recipe number is Cyanoic properties and is highly resistant to elevated temperatures, oxygen and ultraviolet rays. 56

Claims (2)

The invention of the di- (W - n - cyclohexylamino - 2-hydroxypropyl) Composition of polyurethane and polymer axis components (in weight parts): Thermoplastic elastomer containing stabilization-polyurethane torus, characterized in that, with the aim of 5-thermoplastic elastomer 100 increase stabilization effect, it is a co-cyclic phosphorist holds as a stabilizer a mixture of qi-acid and bis-phenol-based 0.2-2 climatic phosphorous acid based on di- (3- / g-cyclohexylamine and isphenol of formula 2-oxypropyl) sulfide 0.5-3 CCCH, j1. “Urethane elastomers. L., ed. 15 “Chemie, 1971, p. 132. 527459 sulfide and bisbenzophenone at the next 10Bisbeisofiofion 0,5-1 Sources of information taken into account at the examination 2. Auth. St. USSR № 448746, cl. C 09D 3/72, 1972 (prototy).