RU2610540C1 - Block copolyester sulphones with dichloroethylene groups in main chain - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: present invention relates to aromatic block copolyester sulphones. Described are block copolyester sulphones with dichloroethylene groups in main chain of formula:

, where n=1–20; z=5–60.

EFFECT: obtaining block copolyester sulphones, characterised by high heat, thermal and mechanical properties.

1 cl, 1 tbl, 4 ex

Description

The invention relates to macromolecular compounds, in particular to aromatic block copolyesters, which can be used as structural and film materials.

Aromatic oligoesters and block copolyesters based on various oligoesters are known

1. RF patent No. 2373180 "Aromatic oligoesters". Authors: Bazheva R.Ch., Haraev A.M. Istepanov M.I. Publ. 11/20/2009. Bull. Number 32.

2. RF patent No. 2382054 "Unsaturated aromatic oligoesters". Authors: Kharaev A.M., Bazheva R.Ch., Kharaeva R.A. and other publ. 02/20/2010. Bull. No. 5.

3. RF patent No. 2382756 "Chlorine-containing aromatic oligoesters". Authors: Kharaev A.M., Bazheva R.Ch., Kharaeva R.A. and other publ. 02/27/2010. Bull. No. 5.

4. RF patent No. 2466151. Authors: Aromatic Polyesters. Kharaev A.M., Bazheva R.Ch., Begieva M.B. and other publ. 11/10/2012. Bull. No. 31.

The main disadvantage of these polymers is their low heat and heat resistance.

Closer to those proposed in structure and properties are polyesters [RF Patent No. 2466152 "Aromatic polyesters". Authors: Kharaev A.M., Bazheva R.Ch., Kazancheva F.K. and other publ. 11/10/2012. Bull. No. 31].

However, these polymers have low physicochemical characteristics, heat and heat resistance.

The objective of the invention is the creation of polyesters with increased values of heat, heat resistance, as well as mechanical characteristics.

The problem is solved by obtaining aromatic polyesters of the following structure:

where n = 1-20; z = 5-60,

the interaction of oligoester based on 3,3-bis- (4-hydroxyphenyl) phthalide and 1,1-dichloro-2,2-di (4-chlorophenyl) ethylene (OE-nFF) with different degrees of condensation (n = 1-20) with 4,4'-dichlorodiphenylsulfone.

The proposed polyesters are characterized by increased rates of heat, thermo, as well as mechanical characteristics.

Example 1. Synthesis of polyester based on OE-1FF and 4,4'-dichlorodiphenyl sulfone

In a three-necked conical flask with a capacity of 250 ml, equipped with a mechanical stirrer, a Dean-Stark trap, a reflux condenser, an inert gas supply barber, 8.6967 g (0.01 mol) of OE-1FF, 2.8717 (0.01 mol) are charged 4,4'-dichlorodiphenyl sulfone, 100 ml dimethyl sulfoxide, 1.1221 g (0.02 mol) KOH. The temperature of the reaction mass is raised to 180 ° C and the synthesis is carried out under a stream of inert gas (nitrogen or argon) for 8 hours. The reaction mass is diluted with 200 ml of dimethyl sulfoxide and precipitated in distilled water. The precipitate formed is filtered off and washed with distilled water until the chlorine ions are completely removed and dried at a temperature of 120 ° C to constant weight.

Example 2. Synthesis of polyester based on OE-5FF and 4,4'-dichlorodiphenyl sulfone

In a three-necked conical flask with a capacity of 500 ml, equipped with a mechanical stirrer, a Dean-Stark trap, a reflux condenser, an inert gas supply barber, 31.234 g (0.01 mol) of OE-5FF, 2.8717 (0.01 mol of 4.4) are charged '-dichlorodiphenyl sulfone, 250 ml of dimethyl sulfoxide, 1.1221 g (0.02 mol) of KOH. The temperature of the reaction mixture was raised to 180 ° C and the synthesis was carried out under a stream of inert gas (nitrogen or argon) for 6 hours.The reaction mass was diluted with 100 ml dimethyl sulfoxide and precipitated in distilled water.The precipitate is filtered off and washed with di Stilled water until complete removal of chlorine ions and dried at a temperature of 120 ° C to constant weight.

Example 3. Synthesis of polyester based on OE-10FF and 4,4'-dichlorodiphenyl sulfone

5.9406 g (0.001 mol) OE-10FF, 0.2872 (0.001 mol) 4.4 'are charged into a 150 ml three-necked conical flask equipped with a mechanical stirrer, a Dean-Stark trap, a reflux condenser, an inert gas supply barber. -dichlorodiphenyl sulfone, 50 ml of dimethyl sulfoxide, 0.1122 g (0.002 mol) of KOH. The temperature of the reaction mass is raised to 180 ° C and the synthesis is carried out under a stream of inert gas (nitrogen or argon) for 6 hours. The reaction mass is diluted with 100 ml of dimethyl sulfoxide and precipitated in distilled water. The precipitate formed is filtered off and washed with distilled water until the chlorine ions are completely removed and dried at a temperature of 120 ° C to constant weight.

Example 4. Synthesis of polyester based on OE-20FF and 4,4'-dichlorodiphenyl sulfone

11.5749 g (0.001 mol) OE-20FF, 0.2872 (0.001 mol) 4.4 'are charged into a 250 ml three-necked conical flask equipped with a mechanical stirrer, a Dean-Stark trap, a reflux condenser, an inert gas supply barber. -dichlorodiphenyl sulfone, 100 ml of dimethyl sulfoxide, 0.1122 g (0.002 mol) of KOH. The temperature of the reaction mass is raised to 180 ° C and the synthesis is carried out under a stream of inert gas (nitrogen or argon) for 6 hours. The reaction mass is diluted with 100 ml of dimethyl sulfoxide and precipitated in distilled water. The precipitate formed is filtered off and washed with distilled water until the chlorine ions are completely removed and dried at a temperature of 120 ° C to constant weight.

Aromatic polyesters are stable in dilute solutions of mineral acids and alkalis. The structure of aromatic polyesters is confirmed by IR spectroscopy and the method of turbidimetric titration.

The technical result of the invention is to expand the range of aromatic polyesters with high heat and heat resistance, high mechanical properties.

Claims (3)

Block copolyethersulfones with dichloroethylene groups in the main chain of the formula:

where n = 1-20; z = 5-60.