SU589933A3 - Polypropylene-base composition - Google Patents

Description

(54) POLYPROPYLENE-BASED COMPOSITION

. 4-oxnobenzoyloxy) -3,5-di-tert-butyl benzoate;

p-octyl-4- {3,5-d and tert-butyl-4-o-sibenzo shoxn) -3,5-y-tert-butylbenzoic; p-dodecyl 4- (3,5 di-tert-butyl-4 oxybenzoyloxy) -3,5-di-tert-buts1benzoat;

 2-ethylhexip- (3,5-flI-tert-butyl-4-oxybenzoyl) -3,5-di-tert-butyl benzoate; methyl 4- (3,5-di-t-tert. uyl-4-hydroxybenzoyl; si) -3,5 - dimethyl benzoate.

fcО

The compounds of formula (1), where R and R are the same as R and R, and are in the same position, can be obtained by reacting 2 moles of the substituted hydroxy benzoyl halide with 1 mole of base, resulting in an intermediate compound of (di-substituted hydroxybenzoyloxy) -dime-substituted benzoyl halide, which in turn is reacted with alcohol S1I mercaptan, thus obtaining the desired product 20. Trialshylamine such as triethylamine, tripropylamine, triisopropylamine, tributylamine, triamipamine, sodium or potassium hydroxide, sodium carbonate or potassium carbonate or other similar proton acceptors are used, the reaction can be carried out in an inert solvent such as a hydrocarbon, for example goxane, cyclohexane, heptane , inert chlorohydrocarbon, oil, and, preferably, benzene or toluene, or without it. Additives to the polymer can be introduced before or after the polymerization, during conventional processing (for example, by grinding with heating), after which the composition is extruded, pressed and further films, fibers, filaments, balls in the floor, etc. These compounds have an advantageous thermostabilizing effect on polymers when they are processed, as a rule, by high tempera tures by aturases. Stabilizers are also difficult to dissolve in suitable solvents and spray them on the surface, for example, films, fabrics, filaments, in order to give them effective stabilizing properties. These compounds can also be used in combination with other additives, such as antioxidants, sulfur-containing esters, for example, distearyl-β-thiodipropionate (BSTI) P) dilauryl-β-thiodipropionate (VdTVVR) in an amount of 0.01-2% by weight of organic material etc., reagents, lowering temperature, corrosion inhibitors, dispersants, demulsifying agents, defoaming agents, carbon black, accelerators and other chemical agents that are used in rubber compounds, softeners, color stabilizers, di- and trialkyl and alc ifphenyphosphites, heat stabilizers, UV stabilizers, aH-fHoaoHaHTWf

dyes, pigments, metallic substances that cause the formation of chelate compounds, dyes, etc. The mixtures of these substances, especially those from the c. Containing esters, phosphites and / or UV-stabilization. often give better results in certain cases than expected from the properties of individual components. Particularly advantageous compounds are dilauryl-α-thiodipropionate and distearyl-β-thiodipropionate. The above stabilizers use a quantity of B, from 0, O1 to 2% by weight of organic material, and preferably from OD to 1% by weight.

Although the compounds of the formula I are also effective heat stabilizers, it is more advantageous to introduce additional antioxidants if the treatment is carried out at high temperatures. ; The oxidative oxidative compounds used are fan-optic compounds: di-n-octadecyl- (3-tert-butype: -4-ox-5-methylbenzyl) malonic acid ester 2,6-di-tert-butylphenol 2,2-methylene-bis- (6-tert-butyl-4-metsh1phenol) .. 2, 6-di-tert-util-hydroquinone octadecyl- (3,5-di-tert-butsh1-4-oxybenzipthio) -acetate 1D, 3-tris- (3- tert-butsh1-6-methyl-4-hydroxyphenyl) -butane 1,4-bis- (3,5-di-tert-butyl-4-hydroxybene (1S)), 3.5, b-tetramethylbenzene 2,4-bis- {3, 5 di-tert-butyl-4-hydroxyphenoxy) -b-yuktiltio-, 3,5-1riazin 2,4-bis- (4-hydroxy-3,5-DI-tert butsh1phenoxy) .6- (p-octylthioethylthio) 1,3,5-triaz n 2,4-bys - {- And-octylthio) -6- (3,5-di-tert-bu tsh1-4-oxyanesin) -1,3,5-trnazin. 2,4,6-tris- (4-hydroxy-3,5-gyi-tr-booth-1phenoxy) -1,3,5-triazine p-octadecyl-. - (3., 5-DI - tert-butyp-4-hydroxyphenyl) -propionate. 2- (p-octyltone) -Etyl-3,5-di-tert-butyl-4oxybenzoate amy stearic acid -N, K -bis ethylene, 5-di-warms scraps "4-bxyfensch1) 1,2-propenylsylsol-hung propionate -fe- {3,5-yi-tert-butyl-4-oxyfenda) -propionate} pentaerythritol-tetrakis- - (3,5-d and-tert-butsh-1-4-oxyphenyl) - ropiOnadioctade-1-3, 5- "and -tert-butyl-4-oxybenZyl phosphonate d and -P-octahedral1-1- (3,5-di-tert ut -4oxyphenyl) -ethane phosphonate. : Any other pros can be done with the same results.

Example, Testing the irradiation of oriented single threads in 15 denier. Additives dissolved in a solvent (for example, methylene chloride) are mixed with powdered polypropylene. The solvent is removed at room temperature in a vacuum oven with a slight blow of air. The dry mixture is extruded in a molten state at 230 ° C and granulated. Gogerextruded granules through the matrix for ODI-Q night threads, in the molten state, are drawn into the filaments and, in an even hot state, are oriented 4: 3 using a group of cold and combustible Godet rolls. Single threads of 15 denier (nominal) are radiated.

In tab. Figure 1 shows the results of testing the initial strength of the fiber after it was irradiated in Florida with an estimated amount of energy that accumulates and EO.1G) kpe (KlEofcantfeeys unit or keu).

Polynropium -single single strands of ready-25. T using 0.2% dioctadecyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate and 0.1% calcium stearate.

Relatively good stabilization is observed with the introduction of OD and Ifc of the added additive.

Prymmer 2. Mix, as described in Premier 1, polypropylene with 0.1% octadecyl ester - (3.5 di-t-buts-1-4-hydroxy-1) -propionic acid, 0.3% dilauchshi-thiodipropionate, 0.1% calcium stearate and 0.5% stabilizer (see Table 2) and from the granule are spun in an extruder with a nozzle with 10 holes of fibrous filament yarn. It is stretched in a 4: 1 ratio 6O / 10 denier filament. On a circular machine, knitwear is obtained from this as samples. Samples in Florida are directly exposed to the sun and the tensile strength of the irradiated fibers is measured periodically. At the same time, the penetrated amount of light is measured, which is indicated in the table by the number K I y.

The following stabilizers are used: B is methyl 4- (3, 5-dityl-butyl-4-oxybenzoyl-oxy) -3,5-di-t-butyl-benzoic acid methyl ester, C is methyl methyl ester 4 - (/ U, 5-di-t-butyl-4-oxybenzoyloxy) benzoic acid. Tinuv1Sh 328 - 2- (2-hydroxy-3 5-di-t.-amylphenyl) -benztriazole, a stabilizer common in trade

Table

bavki

connection number 2

Compound No. 2 + 0.25% A

connection number 3

connection number 3

Compound No. 3 + 0.25% A

connection number 4

compounds 1

- compounds 1 + O, 25% A Note; A- 236

61

87

96

86

63

90

79 106 51 61 76 75 (2-ox No. 3 5 -Di-tre1. Bugylphenyl | --5- «lorbeneotriazop.

inventive formula

A polypropylene-based composition containing a stabilizing additive, characterized in that, in order to increase its resistance to the action of UV light, it contains a compound of the formula as a stabilizing additive

and S is t-butyl;

R, R

R

R - Al Kil with 1-18 atom-Ze

table 2

mi carbon C or mr-. or Dialkylfepip with 7-14 carbon atoms C;

X - oxygen,

with 1bduyuyu ratio of components, wt.%:

Polypropylene 99-88.9

Stabilizing

addition of the above formula O, 1--1.

Sources of information taken into account in the examination:

1. US Patent No. 3029276, cl. 260. 473, 1962.

2. US patent number 3112338, TL.-. 1963.

3. US Patent No. 32О6431, i 260-j .45.85, 1965,