SU321523A1 - METHOD OF OBTAINING LOW-MOLECULAR CARBOC NECK POLYMERS - Google Patents

Description

A known method for producing low molecular weight chain-chain polymers by polymerization of styrene, a-methylstyrene or their mixture on a catalyst consisting of an ionic pair: a-chloromethylstyrene and an organoaluminium compound of the general formula

ASH ,,

where R - coal 1 od () rodn1. ) adical, G - halogen, n I-3.

In order to expand the range of polymers and catalysts for their preparation, as a chlorine derivative, the components of the catalytic pair suggest using di (chloroisyropyeil) benzene with the following structural formula

BUT

CH9

The resulting molecular weight polymers can be used as plasticizers for many hard polymers, such as polystyrenes, rubbers, etc., etc. The presence in the polymer chain 1 of significant amounts of active chlorine also contributes to the process of volcannization and most conventional polymers, which, under conventional methods production of non-interlinked bonds at low molecular weight zero-liter is vulcanized with great difficulty.

Such a positive qualitative change, and the use of a polymer in accordance with the proposed method was implemented for the first time. P p} 1 ME 1. A. Styrene in the amount of

100 ml is loaded into a half-liter heat-resistant glass flask, to which 4 mg of di- (chlordiisopropenyl) benzene with active chlorine content of 20% and 3 ml are added under argon atmosphere with continuous stirring.

a beisine solution of triisobutyl-aluminum (TIBA) with a concentration of 0.9 mol l.

The reaction proceeds very rapidly at a temperature of 116 ° C. After cooling, the reaction mixture is treated with methanol; the polymer is separated and dried in a laboratory vacuum dryer. The experiment is repeated 3 times.

Data on the polymerization are given in table. one.

B. Styrene in an amount of 100 ml is loaded into a half-liter heat-resistant glass flask, to which 150 ml of dried toluene, 4 ml of dichlorodiisophenylbiisol and

:; - me: Chstn:; cl in number).; : l; l lit ;; (;;; y; o thermo :: technical; iC). Hood in the atmosphere; ;:;::; n11: Ery; :) CHOL: Nsrsmsnn: nanni to iai day-; hls);) dnzia:;: onex :: il) -snzoalumin (C2-C22) with concentration act ;; vngo aluminum 0.5 mol1l.

At a temperature h for 1 w ;; edug protse yulimer111lii.

The obtained raccyopia is treated with methyl alcohol, with the restrained neozoic D. Isolated with iviHar and laboratory vacuum dried kg.

Experience 11o; torus; from 3 times.

Data on but nolimeriziii nrn iie ;; e -b ;. n Tc bl. 2

 : pp. 3 "with

1P

150 150

44 150

B. Styrene in an amount of 100 ml of CsI-ruzhe in a half-liter heat-resistant glass flask, to which in an atmosphere of aproi-a with i; 150 ml of dried benzene, 2 ml of di-chloro-isonropenyl-benzene and 1 l of a toluene solution of di - isobutylaluminum-chloride (ifliBAX) with a concentration of 1.24 mol / l.

1) 1L

III II

It 1 i-TP

II TJ

p, j 0 1

; i a,

I, I m I

I j l .el,

) Hd from

 TO h

1 t p 1 J,

amount

 amount

dichlordium. zopropenplbei

benzene, ml

wal, ml

: iicpii Polymerization conditions and properties of the polymer obtained are given in Table. four.

Example 3. L. A mixture of styrene a-methylstyrene, taken in a ratio of 1; 1 by volume in an amount of 100 ml is loaded into a half-liter heat-resistant glass flask, to which 4 ml of di- (chldiisopropenl) bepzol with a concentration of active chlorine of 20%, 5 ml of a TIBA gasoline solution with conceptual 0.9 are added under an argon atmosphere with continuous mixing. moth; l.

At a temperature of 117-C for 30 minutes lead the process of polymerization. The resulting reaction mixture is treated with methyl alcohol. The selected polymer is dried in a laboratory vacuuoil.

B. A mixture of styrene and α-methylstyrene, taken in a 1: 1 ratio, but in an amount of 100 ml, is loaded into a half-liter heat-resistant glass flask, to which 4 ml of di- (chlordiisop) is added under argon atmosphere during continuous storage. -benzene with

T and b l and i; a 4

active chlorine concentration of 20%, and 150 ml of benzene and 2 ml of toluene solution DIB.X with a concentration of 1.24 mol / l.

At a temperature of 2 hours, the process is conducted on the floor: merizac1: and. The resulting reaction mixture is evaporated, and then treated with methyl sodium containing uncolored anti; Ostartiel 2246. Selected ;;; the polymer is dried in a laboratory vacuum i - ..

Example 4. The resultant for 1B ipccumole-a polymer is a polymer used as an elastifix; torus naphlitel 1. -Lcyxnolibutadiene (SKD) rubber.

In tab. 5 irivede1; s properties of vulcanizates of) Ole 1 .1-C: 1c-butadiene rubber ii oiH iTiioro 1,4-cis-butadiene rubber and experimental 1,4-cis butadiene rubber, soda {) 20 20 weight. including H1 pulverized iolimer. Kauchukn Kra: t and vulcanized by standard steel on the rubber SKD.

t a b l 11 c a 5