Patent · US Expired

Process for the production of suspension polyvinyl chloride suitable for processing by injection molding

US4588791A · kind A · utility

2Cited by

3References

13Claims

0Family size

Assignee

Huels Aktiengesellschaft · DE

Inventors

Heimo Bieringer · Neumarkt am Wallersee, AT
Martin Engler · Leutkirch, DE
Wolfgang Holtrup · Marl, DE

Key dates

Filing date	Sep 7, 1984
Grant date	May 13, 1986
Priority date	—
Expiry date	Sep 7, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F14/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A suspension polyvinyl chloride is produced which is especially suited for processing by injection molding because it exhibits a greatly improved flowability. Polymerization takes place with an ascending temperature control at at least two different temperatures, a regulator being added to the polymerization mixture by a one-time addition at a conversion of .gtoreq.20% by weight and .ltoreq.70% by weight.

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