SU447050A1 - The method of obtaining impact copolymer - Google Patents

Description

(54) THE METHOD OF OBTAINING A STRUCTURAL COPOLYMER OF AN ATMOSPHERE RESISTANT, with a thermometer and divider with the aid of argon. 770 g of water and 6 g of sodium lauripsulfate with constant stirring in a stream of argon for 15 m are loaded into the mixture. After this, from the depot} Goy feopoirKu add a pre-treated with argon mixture of monomers, with one hundred and three G; 302 g of butylshfilato (BL), 48 g of acrnlonnthzyl (LN and 40 g of methacrylatoxyethyl, butyl perpexium (PM), after which CNsecb is stirred for 15 minutes. The mixture is heated to 30 C and the mixture is injected as aqueous solutions (about 4 g of rongolite in 10 g of water, 0.4 g of trilon to the South of water, 0.02 g of ferrous sulphate in 10 g of water). After 15 kgan of nepeMeiuiroaHHHH, 0.16 g of hydroperoxide (- isopropylbenzene in 10 Because of the exothermic nature of the reaction, the temperature of the process rises to 50-60 ° C. Special cooling} i.e. is carried out. The reaction is carried out for 2 hours. The latex contains dry weight - 180 g (33 wt.% of the weight of the latex). The resulting copolymer contains 8 wt.% of peroxide units. The characteristic viscosity of the isolated copolymer rubber is ca D hlcr (npii 25 C is 2.09 dl / 1 Prnv1tku styrene and acrylonntrile to non- {oxidized butcrylate. {In latex (rubber is used in the form of latex) is carried out in a 2-liter reactor equipped with a stirrer, thermometer, reverse haydil jiijffiov and a siphon for argon. With stirring, I load 830 g, 12.75 g of sodium dodecapsulphonate, and 150 g of rubber (calculated on dry weight) as a latex into the reactor. Stirring is carried out for 15 minutes and a monomer mixture consisting of 400 g of styrene and 100 g of acrylonitrile is added to the atom. Stir the reaction chiecb in argon flow for 2 hours at 50 ° C, then raise the temperature to 65 ° C and enter; In an aqueous solution of 1.5 g of potassium persulfate in 2O g of water, the temperature is constantly 65 + 1 ° C. After 4 hours the polymerization is expelled. As a result, a polystyrene terpolymer dispersion with an average particle size of 0.1-0.3 microns is obtained. The final latex contains 40% by weight of dry weight of the latex. Characteristic is the viscosity of the copolymer in copolymer in dimethylformamide. when it is 2.35 dsl / g. Copopimpres are coagulated. As a coagulable agent: its IP agent is used as water-grade aluminum. ivy khystsov. The powder copolymer is impregnated, filtered, dried; At a temperature of 70 ° C, after which granules-i coziness in the screw extruder. Products made from copolymers have a high gloss; shui surface Physical and physical properties of the material, measured at 20 ° C, are given in the table. Example 2 and 3 are different from example 1 by the ratio of grafted monomers (see table). Example 4, 5, and 6 differ from Example 1 in that when producing butnlacrylate rubber in the initial reaction mixture, the ratio of monomers and the content of lerexic groups (see table), Examples 7 and 8 differ from Example 1 in that the production of butyl acrylate rubber in the initial reactive mixture H3N {eHeHO is the ratio of the mozemers. and the content of peroxide groups, and instead of methacrylatoxyethyl-tert. butylperexyl taken acrylatoxystil tert. Butter peroxide,; Examples 9 and 10 differ from example 1 in that the corresponding ratio of rubber to the grafting mixture of monomers is changed (see table). Example 11 (control). The copolymer was obtained on the basis of butyl acrylate rubber, which does not contain irregular groups. The method of preparation is the same as in example 1. Example 12 (counter-mining). Copolymer was obtained on the basis of butadiene of new rubber. The method of preparation is the same as in example 1. In connection with the low index of copolymers when prepared in examples 11-12, in the process of styling and acrylonitrile, p1 weight molecules are added to the rubber - mercaptan in the amount of 0 , 25 wt.% From the amount of monomers. As can be seen from the table, the copolymers obtained on the basis of butyl acrylate rubber, which contain links in the side chains of the kiiCHbie, have a high resistance to impact and do not lose this property after aging under the PPK-2 lamp. In addition, they have a high melt index without introducing regulators of southwestern molecules into the reaction mixture. The peroxidation rubber, determined in chloroform at 25 ° C, has a viscosity of 0 dL / g. Haoakt. The total viscosity of the total copolymer, determined in dimetcly.m. mamide, varies from 2.3-2.5 dL / g.

PM-10

2 Same

Same same

From,

BL-60

AN-20 1.87 PM-5

BA-90

2.9

AI-5

PM-5

BA-72

1.99

AI-8

PM-20

BA-8O

2.19 Afl-15 PM-5

BA-.78

2.0 AN-12 PA-10

BA-78 AN-12

2.0 PM-10

0

BA.78 AN-12

2.0 PM-10

BA-80

1 Control

1.75 butipakripatAN-2O lyn without perekisly groups

2 Control

1.75 butadiene

8020

8.0

thirty

82020

802030

Same Same Same

YU

ten

12

but

4O

0.25

thirty

ZO2b 20-25

0.25

5-10

CsoifcTBa Copolymers

103i ier 8981 17

410 12.5 9824.0 894 18 390 9622 880 19 380 9220 89O 16.5 385 870, 18 96.525 375 890 19 12530 96.0 26 - 870 i® ° 380 97.0 25. 887 17.5 375

62.0 12, 1020 10 510 13

320

105 25.5 750 .25

15 370 9

35 5 890

 26.5 850 30 400 12 104.0

105

101;

2.35

2.56

62

2.21

104 2.21

thirty

10.0

2.4 10 100 95.0 8.5 97 9.3 11.5 100.2 91.5 8.0 97.0 8.0 - 97.0 9 ll 99.5 99.6.

Selective extraction methods and tour2. Body titration showed that TCJ in copolymers (Limeoi 1-10) is free. Rubber is absent. For copolymer, as in Example 9, the effectiveness of the grafting is insignificant (SPSU I

ij / o /.

Formula and goiter

et e and

A method for producing a high-impact, weather-resistant copolymer by styrene and acrplonitrile on butyl acetate rubber B in an aqueous medium in the presence of anionic type emulsifiers, characterized in that, in order to increase the impact toughness and melt index of the copolymer, copolymer is used as a starting polymer, butnlacryty rubber is used as a starting polymer and a copolymer is melted. side chains and peroxide groups.