Preparation Of Polystyrene Using 1,3 1,4 Bis(tert

Preparation Of Polystyrene Using 1,3 1,4 Bis(tert Alkylperoxydiisopropyl)benzenes

Abstract: The present invention relates to a method for the preparation of polystyrene, in particular expandable polystyrene, by suspension polymerisation, and to a polystyrene obtained by such a method. The invention also relates to the use of an organic peroxide of formula (I) as a styrene polymerisation initiator and as a flame retardant synergist, as well as to a composition comprising at least one organic peroxide of formula (I) and a halogenated flame retardant.

Patent Information

Application #

Filing Date

11 March 2026

Publication Number

17/2026

Publication Type

INA

Invention Field

POLYMER TECHNOLOGY

Status

Email

Parent Application

Applicants

ARKEMA FRANCE

51, Esplanade du Général de Gaulle La Défense 92800 Puteaux

Inventors

1. VAN HEMELRYCK, Bruno

ARKEMA France - CRRA Rue Henri Moissan 69490 PIERRE-BENITE

2. HUB, Serge

ARKEMA France - CRRA Rue Henri Moissan 69490 PIERRE-BENITE

Specification

Documents

Application Documents

#	Name	Date
1	202617028886-TRANSLATION OF PRIORITY DOCUMENTS ETC. [11-03-2026(online)].pdf	2026-03-11
2	202617028886-STATEMENT OF UNDERTAKING (FORM 3) [11-03-2026(online)].pdf	2026-03-11
3	202617028886-PROOF OF RIGHT [11-03-2026(online)].pdf	2026-03-11
4	202617028886-PRIORITY DOCUMENTS [11-03-2026(online)].pdf	2026-03-11
5	202617028886-POWER OF AUTHORITY [11-03-2026(online)].pdf	2026-03-11
6	202617028886-FORM 1 [11-03-2026(online)].pdf	2026-03-11
7	202617028886-DECLARATION OF INVENTORSHIP (FORM 5) [11-03-2026(online)].pdf	2026-03-11
8	202617028886-COMPLETE SPECIFICATION [11-03-2026(online)].pdf	2026-03-11
9	202617028886-WIPO_PCT_DOC.pdf	2026-04-08
10	202617028886-FORM 18 [08-04-2026(online)].pdf	2026-04-08
11	202617028886-PATENT_APPLICATION_PUBLICATION.pdf	2026-05-02