Patent · US Expired

Mixing apparatus having a cooled connector

US6945687B2 · kind B2 · utility

2Cited by

4References

4Claims

0Family size

Assignee

BASF SE

Inventors

Norbert Güntherberg · Speyer, DE
Jurgen Hofmann · Spalt, DE
Elmar Mailahn · Worms, DE
Hilmar Ohlig · Kaiserslautern, DE

Key dates

Filing date	Oct 4, 2001
Grant date	Sep 20, 2005
Priority date	—
Expiry date	May 17, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2105/12
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a mixing apparatus at least composed of a screw-based machine S1 and a screw-based machine S2, where S1 has heating equipment, at least in the plasticizing and homogenizing zone, and where the outlet from S2 has been connected to the screw-containing barrel of S1, within the plasticizing or homogenizing zone of S1, a substantive feature of which is that the connection between S1 and S2 is brought about by a connector which has cooling equipment effective as far as the inner wall of the screw-containing barrel of S1, and to a process for preparing thermoplastically processable molding compositions, in particular additive masterbatches, from at least one thermoplastic component C1 and at least one component C2, where the melting point or decomposition temperature TMC2 of C2 is lower, by at least about 50° C., than the temperature THC1, which is the lower limit of the thermoforming range of C1, and where most of C2 is melted only after contact with C1.

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