US 10,843,384 B2Granted

Process for the production of thermoplastic moulding compounds

AssigneeIneos Styrolution Group GmbH

InventorsSangJun Ahn, Wolfgang Fischer, Norbert Niessner, Brian J. Banaszak, Roland Walker, Ula El-Jaby, Achim Stammer, Klaus-Dieter Hungenberg, Bernd Hisgen

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Abstract

The invention relates to a process for the production of thermoplastic moulding compounds, in particular for the production of acrylonitrile-butadiene-styrene (ABS), wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a loop conduit (29) which comprises a static mixer (36), wherein the reagents (11, 12) are pressed in loops through the loop conduit (29) and passing the static mixer (36), whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the static mixer (36). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

Claims13

Dependent claims

A process for the production of acrylonitrile-butadiene-styrene (ABS), comprising the following steps:

a. adding at least one solvent to a first reagent (11) that contains or consists of styrene-acrylonitrile copolymer (SAN) and a second reagent (12) that contains or consists of rubber,
b. mixing the at least one solvent, the first reagent (11) and the second reagent (12) in a mixing vessel (50) to form a premix,
c. feeding the premix to a loop conduit (29) which comprises at least one static mixer (36),
d. pressing the reagents (11, 12) in loops through the loop conduit (29), and
e. dispersing the reagents (11, 12) to form a dispersion (15) in the static mixer (36),
and wherein the premix is pressed through the static mixer (36) back to a mixing vessel (50).

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/735,286Filed 9 Jun 2016
Priority: EP 1517196712 Jun 2015
Published: US 2018/0178411 A128 Jun 2018
Granted: 24 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

B29B 7/7485
Systems, i.e. flow charts or diagrams; Plants: with consecutive mixers, e.g. with premixing some of the components
B01J 8/10
With moving particles: moved by stirrers or by rotary drums or rotary receptacles or endless belts
B01J 8/20
With fluidised particles: with liquid as a fluidising medium
B01J 8/38
According to "fluidised-bed" technique: with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory…