Patent · US Expired

Molded styrene polymer articles from vacuum-formed or thermoformed S-B-S block copolymer sheets

US4096224A · kind A · utility

4Cited by

3References

10Claims

0Family size

Assignee

Chemische Werke Huels Aktiengesellschaft · US

Inventors

Gunter Simon · Hillesheim, DE
Walter Widmaier
Karl-Ulrich Reichert

Key dates

Filing date	May 5, 1976
Grant date	Jun 20, 1978
Priority date	—
Expiry date	May 5, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L53/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Sheets produced by the extrusion of a mixture of about 85 - 95 percent by weight of polystyrene or semi-impact-resistant polystyrene and about 5 - 15 percent by weight of a diene-styrene block copolymer having the structure S-B-S wherein S represents the styrene structure and B represents the butadiene or isoprene structure are used for the manufacture of molded articles in the vacuum-forming or thermoforming method.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.