Patent · US Expired

Process for the production of elastomer-modified thermoplastics

US6153692A · kind A · utility

6Cited by

0References

17Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Liesenfelder · Bensberg, DE
Hans-Jürgen Thiem · Dormagen, DE
Martin Ullrich · Leverkusen, DE

Key dates

Filing date	Mar 19, 1998
Grant date	Nov 28, 2000
Priority date	—
Expiry date	Mar 19, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F6/005
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a continuous process for the production of impact resistance-modified thermoplastics. An elastomer, in particular a particulate graft polymer with a water moisture content of 1 to 50%, preferably 10 to 40%, is incorporated into a thermoplastics melt in a large volume kneader reactor. The mixing ratio of elastomer to thermoplastics melt is 4:1 to 1:4. The energy required to melt the elastomer and to evaporate the adhering water is added by heating the walls of the apparatus and via the kneading action of the installed rotating parts.

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