Aryl styrene-based copolymer

Details Aryl styrene-based copolymer Aryl styrene-based copolymer

1993-04-30

1995-04-04

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526293, 526346, 526347, C08F21232

Patent

active

054039088

ABSTRACT:
The present invention provides an aryl styrene-based polymer of a degree of polymerization of at least 5 having recurring units represented by the general formula ##STR1## in the formula, R.sup.1 to R.sup.5 each denote a hydrogen atom, halogen atom or substituent group containing at least either one kind of a carbon atom, oxygen atom, nitrogen atom, sulfur atom, phosphorus atom, selenium atom, silicon atom and tin atom and at least one of the R.sup.1 to R.sup.5 denotes an aryl group having a hydrogen atom, aryl group having a halogen atom or aryl group having a substituent group containing at least either one kind of a carbon atom, oxygen atom, nitrogen atom, sulfur atom, phosphorus atom, selenium atom, silicon atom and tin atom, of which the stereospecificity is a mainly syndiotactic configuration and a method for the preparation thereof as well as a styrene-based copolymer and a method for the preparation thereof.
The aryl styrene-based copolymer of the-present invention has a high syndiotacticity and is excellent in the heat resistance, resistance against chemicals and electric properties.
Further, the styrene-based copolymer of the present invention has a high syndiotacticity and, in addition, has a wide temperature range suitable for melt molding or is excellent in the heat resistance.
Accordingly, the present invention can be effectively utilized as heat-resistant resins, base materials of films and the like.

REFERENCES:
patent: 3764590 (1973-10-01), Mukoh et al.
patent: 4412050 (1983-10-01), Mehta
patent: 4990580 (1991-02-01), Ishihara et al.
patent: 5066741 (1991-11-01), Campbell, Jr.
patent: 5077367 (1991-12-01), Campbell, Jr. et al.
patent: 5082358 (1992-01-01), Tabata et al.
Hackh's Chemical Dictionary, 4th ed., McGraw-Hill Co., N.Y., p. 62 (1969).
Natta et al., "Stereospecific Polymerization . . . of Vinyl Aromatic Monomers", Makromol. Chemie, 28, 253 (1958).

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