SU785331A1 - Polymeric composition - Google Patents

Description

(54) POLYMER COMPOSITION The invention relates to half-dimensional compositions including, for example, polypropylene and inhibitors of light and thermal oxidative degradation. The invention can be used in the manufacture of various products based on said polymer (films, threads for canals, networks of carpets, clothes, plastic products, etc.) Stabilized polymer compositions based on polypropylene are known, including various benzophenone derivatives as stabilizers: OM benzon, OS benzon, OA benzon ll. The disadvantages of benzofonone derivatives are the absence of a thermal stabilizing effect on the polymer, poor efficacy as light stabilizers, especially on the filaments and the film bleeding from it, the coloring effect on the polymer, the scarcity of the raw material. In particular, in the domestic industry benzon-C is produced with an insufficient degree of chift, resulting in a liquid consistency that prevents it from being evenly distributed throughout the o-shaped polypropylene. The introduction of benzon-OA into polypropylene is possible practically only in solution, which makes it difficult to obtain a stabilized polymer. In addition, OA benzon has a dark brown color and, accordingly, colors the polymer in yellow-brown tones. Known stabilized polymeric compositions based on polypropylene include benzotriazole derivatives as stabilizer, the so-called Tinuvins: Tinuvin-326g -2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, Tinvine-32 7-2 (2-hydroxy-3,5-di-tert-butyl-phenyl) -5-chlorobenzotriazole, tinuvin-328-2- (2.-hydroxy-3, 5-diisoamyl) benzotriazole l2J. Compared to benzons, the effectiveness of tinuvins, as light stabilizers, is only slightly higher; however, they are also not heat stabilizers, have a slight coloring effect, and are sweated from the polymer. In order to obtain these stabilizers, there is no raw material in domestic production. Known stabilized polymer composition based on polypropylene, the stabilizing mixture of which consists of Tinuvin-326, 1,1,3-tris- {2-methyl-4-hydroxy-5 tert-butylphenyl) butane (topanol KA), dilauryl thiodipinate (DLTDP) at; The following ratio of components, weight,%: By; 1 propylene 98,7 Tinuvin-3260,5 Topanol KA0,3 DLTDP0,5 Calcium stearate. 0.2 h. This composition has a terrestrializing effect due to the introduction of topanol KA and DLTDP, however, its disadvantage, as well as the above stabilizers, is the lack of efficacy of light and sablisirunhtsha efficiency and. coloring effect on pehlimer. For the prototype of the proposed invention, a polymeric composition based on polypropylene is used, in which M-cyclohexyloxamoyl-2,2,6,6-tetra methyl-4-amine hyperidium of formula HK WHC-C-SH H (C-491J 4 CHj The stabilizer is used in combination with phenolic antioxidants that do not contain sulfur, such as Antioxidant 2.2-46, Topanol KA, Irganox 10 (domestic industry produces phenolic antioxidants similar to Irganox 101 called phenosan-23, phenozan-28). The disadvantage of this composition is concluded in insufficient light of thermal stabilization of polypropylene fiber fibers, in order to increase light and thermal resistance, the polymer composition, including polypropylene, is stabilized

Calcium supplement, calcium stearate and a sulfur-free phenolic antioxidant contain a compound of the general formula as a stabilizing additive.

UNCCHIP C 0,

L- / N,

SNS SNZ

where K is alkyl with chlSam atrms C from 3

to iti- - ";

3 - 2,2,6,6, -4-oxopiperidine-butanate (Lastar Mak),

5 - 2,2,6,6-4-oxopiperidine-capronate (Lastar KapK);

17 - 2,2,6,6-4-oxopiperidine-stearate CHLastar StK),

R - C Not - 2,2,6,6-4-oxopiperidine-benzoate (Lastar BK), (- 2,2, b, 6-4-b x copiperidine-salicylate (Lastar SC) ,, /.

  Y4 failures - 2,2,6,6-4-6x6 piperidin-phthalate (Lastar FC),.

The proposed compound is used in combination with phenolic antioxidants that do not contain sulfur, for example, Topanol KA, T-Triterite ether

5 3,5-ditertbutyl-4-hydroxyphenyl propionic acid - phenosan 2: 3 and bis-3- (3,5-ditertbutyl-4-hydroxyphenylpropionate) diethylene glycol - phenozan 28). Phenozans most preferred "

Q since O1H1I is well compatible with the polypropylene Nome, they have low melting temperatures of 1phenosane 23 -). KpfoMe addition / in contrast to the currently used imported phenolic antioxidants (Topanol CL)

Phenozans are produced in the USSR on the basis of domestic raw materials (their production has already been established under pilot-industrial conditions and industrial technology is being developed).

Q The invention is illustrated by the following example:

Pr 1. p. To 20 kg of porcupine polypropylene, a stabilizer, calcium stearate and feiolol antioxidant are added in amounts, C (CH 2; and COOH with p 0–8,2-2,6,6-4-oxopopiperidine oxalate (Lastar SCHK.), 1- iJ 2,6, 6-4-oxopiperidine msh: 6nat (Lastar MK), 2-2,2,6,6-4-oxopiperid Dean-butanediovat Lastar Yak), 3- 2,2 , 6, b-4-oxopiperidine-pentadiovat (Lastar GK), 4-2, 2,6,6-4-oxopiperidine-adipinate (Lastar AK, 5- 2,2,6,6-4-oxopiperidine pimelinat (Lastar PC), 6- 2,2,6,6-4-oxopiperidine-succinate (Lastar SuK), 2,2,6,6-4-ox6-piperidine-azelainate (Lastar AzK), 8 - 2,2,6,6 -4-oxopiperidine-sebacate (L Astar SebK), with the following ratio of components, wt.%: polypropylene 98.0-99.7 Luminosity, abilizing additive 0.1-1.0 Phenolic antioxidant, 0-0-0-0 Calcium stearate 0, 1-0.2 Indicated Compounds. Under the name Lastars, are crystalline powders and are the simplest derivatives of triacetonamine, obtained on the basis of the available domestic raw material I (acetone, ammonia, organic acids). The compounds are introduced either by blending with powdered polypropylene or by spraying onto granulated polypropylene (the first method is more preferable) in an amount of from 0.1 to 1.0% by weight of the polymer, in particular from 0.2 to 0.5%).

eannyh in table. 1 (pp 1-26) and table. 2 (p.2). The components are thoroughly mixed and the mixture is extruded at temperatures in the zones 200 - 220 -. The resulting vein is crushed to pellets and, at the temperature of the extruder, at the temperature of the extruder, from 240 to 28 ° C, the monofilament is formed at the temperature of the extruder ;; With a diameter of 0.2 mm, which is tested for light, thermal and weather resistance.

The lightfastness of the thread is determined by irradiating it with UV light on an IS device (GOST 10761-64). For irradiation, the thread is wound on special devices so that it is located along the LDTS-30 lamp (GOST ba25-61) for a length of 670 mm and in contact with its surface when the devices are applied to the lamps. The threads are kept in the device at 90% moisture until the beginning of the breakage. The lightfastness of a yarn is expressed by the time it is irradiated before being destroyed in days.

Heat resistance is determined by the time of heating of the threads of the thread in hours in an air thermostat at 150 ° C before the onset of destruction (brittleness). For this, threads in the form of hanks with a diameter of 45-50 mm are hung on nylon loops on a glass rod so that the threads do not touch each other. with a friend and with thermostat walls, the temperature in the thermostat is preset.

The test results are presented in Table. one.

Weather resistance is determined by maintaining the strength and elongation of the yarns as a percentage of the original values after their exposure in the open air at an angle of 45 to the horizon and facing south. The test results are presented in Table. 2

Example2. K5kg of powdered polypropylene is added with Topanol KA and DLTDP in the amounts indicated in clause 28 of the table. 1. A mixture of vanilla and

mix well, after which a previously prepared 1% solution of benzon is introduced with stirring. OA in ethyl alcohol and mix until uniformly colored. masses. The resulting mixture is dried in a vacuum dryer with a residual pressure of 350 mmHg. to a content of no more than 0.08%. Then the mixture is processed in the thread and tests HXJ as in example 1.

The test results are shown in Table. 1 and 2.

From the data table. 1 it follows that the lightfastness of monofilaments stabilized by compositions based on

5 litars are 2.0–3.6 times higher than the light stability of threads stabilized by compositions of known, mainly imported, stabilizers (paragraphs 8, 24, 25, 26). Heat resistance

0 polypropylene filaments stabilized by lasteras and known imported stabilizers are approximately the same.

five

From the data table. 2, it follows that the weather resistance of yarns stabilized with a composition based on Lastar BK (p. 2), after 6 months of testing, is 5 times higher than the corresponding yarn with the addition of individual .antioxidant phenosan 28 in.l), 1.3 times higher than the filaments with the well-known imported composition, which includes the Tinuvin light-stabilizer - 326, and

5 is 2.5 times higher than with the known composition, including light stabilizer OA benzon, which also intensively paints the polymer yellow. In practice, already at 50% of the residual strength, the thread is considered unworkable, and therefore threads stabilized with an individual phenozan-28 and composition, including OA benzonone, are outputted; This is already 1 month after 4 months of testing in an open air. heat resistance of polypropylene monofilaments with a diameter of 0.20 WM, stabilized by various compositions. Table

1- Fenozan - 28

2 Lastar BK Fenozan 28

b / col

80 175

eleven

15 17 23

b / col 211,247

215 42

0Lastar SuK Fenozan 2

21Lastar AEK Fenozan 28

22 Lastar Seb.k Fenozan 28

23Lastar BK Fenozan 22

24Lastar BK Fenozan 22

25Lastar BK Tbpanol KA

26Lastar BK Topanol K

27Tinuvin J26 Topanol K DLTDP

28Benzon OA Topanol K DLTDP

29C-491 Irganoks 1010

30-0-491

Irganox 1010

Continuation of table 1

0.3

4U

20J

 II

47

198

195

 and

46

235

63

2b7

C 4

 II

0.3.

203

59

 If

238

62

242

2

Weak yellow

233

23

Yellow

63

29

Colorless

115

Claims (1)

59 13 7853 Claims of the Invention A polymer composition comprising polypropylene, a stabilizing additive, calcium stearate and a sulfur-free phenolic antioxidant, about t-5; that, in order to increase light and heat resistance, as a stabilizer of an additive it contains a compound of the formula formula V ru RCOOH. . N 2 .15 where R is alkyl with the number of C atoms from 3 to 114 (CHy) with n 0-8. Sources of information taken into account in the examination 1. Auxiliary substances for polymeric materials, M., Himi, 1966, p. 54-59. - “Stabilizers, boosters, vulcanization agents, pore forming, this Rubebom. Tambov truth, 1, p. 266, 283., 3. Materials of the All-Union Co-Fusion Synthesis and Efficiency Research of Chemicals for Polymeric Materials, Tambov, 1970, vol. 4. 4. USSR author's certificate №645356, cl. C 07 D 211/58, 1976 (prototype).