Global Patent Index - EP 2794673 A1

EP 2794673 A1 20141029 - METHOD FOR PRODUCING EXPANDABLE STYROL POLYMERISATES CONTAINING PARTICLE-SHAPED ADDITIVES

Title (en)

METHOD FOR PRODUCING EXPANDABLE STYROL POLYMERISATES CONTAINING PARTICLE-SHAPED ADDITIVES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON EXPANDIERBAREN, PARTIKELFÖRMIGE ADDITIVE ENTHALTENDEN STYROLPOLYMEREN

Title (fr)

PROCÉDÉ DE FABRICATION DE PARTICULES EXPANSIBLES DE POLYSTYRÈNE CONTENANT UN ADDITIF PARTICULAIRE

Publication

EP 2794673 A1 20141029 (DE)

Application

EP 12810201 A 20121217

Priority

  • EP 11194873 A 20111221
  • EP 2012075730 W 20121217
  • EP 12810201 A 20121217

Abstract (en)

[origin: WO2013092468A1] The invention relates to a method for producing expandable styrene polymers containing particulate additives, said method comprising the following steps: a) producing prepolymer pellets by means of a first suspension polymerization of an aqueous suspension containing styrene monomers and particulate additives; b) separating the prepolymer pellets; c) optionally dividing the prepolymer pellets into fractions of different particle size and selecting one or more fractions for subsequent steps; d) producing an aqueous suspension of the prepolymer pellets and performing at least one second suspension polymerization in the presence of blowing agent and while metering additional monomers.

IPC 8 full level

C08F 12/08 (2006.01); C08F 2/18 (2006.01); C08J 9/00 (2006.01); C08J 9/14 (2006.01); C08J 9/20 (2006.01); C08K 3/04 (2006.01)

CPC (source: EP US)

C08F 2/18 (2013.01 - EP US); C08F 12/08 (2013.01 - EP US); C08J 9/0066 (2013.01 - US); C08J 9/141 (2013.01 - EP US); C08J 9/20 (2013.01 - EP US); C08K 3/04 (2013.01 - EP US); C08J 2325/06 (2013.01 - EP US)

C-Set (source: EP US)

C08F 12/08 + C08F 2/18

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2013092468 A1 20130627; BR 112014015248 A2 20170613; BR 112014015248 A8 20170704; CN 104011086 A 20140827; EP 2794673 A1 20141029; KR 20140105845 A 20140902; MX 2014006977 A 20140826; US 2015005402 A1 20150101

DOCDB simple family (application)

EP 2012075730 W 20121217; BR 112014015248 A 20121217; CN 201280063978 A 20121217; EP 12810201 A 20121217; KR 20147020266 A 20121217; MX 2014006977 A 20121217; US 201214367246 A 20121217