Title:
METHOD FOR PREPARING BLACK EXPANDABLE POLYSTYRENE
Document Type and Number:
WIPO Patent Application WO/2015/019008
Kind Code:
A3
Abstract:
The present invention concerns a method for preparing black polystyrene comprising the following steps: - preparing an aqueous suspension comprising the styrene monomer and carbon, - heating the suspension to a polymerisation temperature of between 90°C and 130°C, - adding, in its entirety or continuously, before, during and/or after the abovementioned heating step, at least one organic peroxide main initiator, characterised in that the initiator has the formula 1-alkoxy-1-t-alkylperoxycyclohexane in which the alkoxy group comprises between 1 and 4 carbon atoms, the t-alkyl group comprises between 4 and 12 carbon atoms, and the cyclohexane ring can optionally be substituted by 1 to 3 alkyl groups, each separately comprising between 1 and 3 carbon atoms. The invention also relates to the polystyrene obtained directly by means of this preparation method.
Inventors:
NICOL PASCAL (FR)
Application Number:
PCT/FR2014/052020
Publication Date:
April 09, 2015
Filing Date:
August 04, 2014
Export Citation:
Assignee:
ARKEMA FRANCE (FR)
International Classes:
C08F2/18; C08J9/14; C08F4/34; C08F12/08; C08J9/00; C08J9/20
Foreign References:
| FR2948375A1 | 2011-01-28 | |||
| EP2105457A1 | 2009-09-30 | |||
| DE10150405A1 | 2003-04-17 | |||
| US6387968B1 | 2002-05-14 | |||
| US20040039073A1 | 2004-02-26 |
Attorney, Agent or Firm:
GAVIN, Pablo (420 rue d'Estienne d'Orves, Colombes Cedex, FR)
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