Articles of a new crystalline form of syndiotactic styrene polym

Details Articles of a new crystalline form of syndiotactic styrene polym Articles of a new crystalline form of syndiotactic styrene polym

1990-02-27

1993-02-02

Teskin, Fred

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525151, 526346, 5263472, 528481, 528502, 428402, C08L 7112, C08F 600, C08F 1208

Patent

active

051838532

ABSTRACT:
Articles of syndiotactic styrene polymer where the polymer is present predominantly in a new crystalline form characterized by an X-ray spectrum which presents reflections of maximum intensity at 2 .theta.of 12.2.degree. and 20.0.degree., where in the 2 .theta. range from 15.degree. to 18.degree. no reflections of appreciable intensity appear.

REFERENCES:
patent: 4946897 (1990-08-01), Albizzati et al.
Guerra, Gaetano et al., "Polymorphism in Melt Crystalline Syndiotactic Polystyrene Samples", Macromolecules, vol. 23, No. 5, pp. 1539-1544, 1990.
Derwent Abstract 88-136375, of Japanese Patent 63-077905.
CA112(16):140057e, of Japanese Patent 88-101290.

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