EP 4352160 A1 20240417 - A PROCESS FOR THE PREPARATION OF LOW-DENSITY ABS COMPOSITES
Title (en)
A PROCESS FOR THE PREPARATION OF LOW-DENSITY ABS COMPOSITES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ABS-VERBUNDSTOFFEN MIT NIEDRIGER DICHTE
Title (fr)
PROCÉDÉ POUR LA PRÉPARATION DE COMPOSITES D'ABS DE FAIBLE DENSITÉ
Publication
Application
Priority
- EP 21179042 A 20210611
- EP 2022065468 W 20220608
Abstract (en)
[origin: WO2022258648A1] A process for the preparation of low-density ABS composites Abstract A process for the preparation of a thermoplastic molding composition (TP) comprising components (A), (B), (C), (D) and, if present, (E): (A) 10 to 65 wt.-% ABS graft copolymer (A); (B) 30.5 to 80 wt.-% SAN copolymer (B); (C) 1.5 to 9.5 wt.-% copolymer (C) with epoxy, maleic anhydride and/or maleic imide functional group; (D) 3 to 29 wt.-% hollow glass microspheres (D); (E) 0 to 15 wt.-% additives and/or processing aids (E); comprises the following steps:15 (i) Premixing of 2-10 wt.-% component (A) with hollow glass microspheres (D); (ii) Mixing and melting of the remaining portion of component (A), components (B), (C) and, if present, (E), in the feeding section of an extruder, (iii) Addition of the pre-mixture obtained in step (i) to the melt obtained in step (ii) by a side-feeder in a zone of the extruder after the kneading section to obtain the thermoplastic molding composition (TP) by melt mixing.
IPC 8 full level
C08L 55/02 (2006.01); C08C 1/065 (2006.01); C08F 279/04 (2006.01); C08J 3/22 (2006.01); C08K 3/40 (2006.01); C08K 7/28 (2006.01); C08L 25/12 (2006.01)
CPC (source: EP)
C08C 1/065 (2013.01); C08F 279/04 (2013.01); C08J 3/201 (2013.01); C08J 3/203 (2013.01); C08L 25/12 (2013.01); C08L 55/02 (2013.01); C08J 2355/02 (2013.01); C08J 2425/12 (2013.01)
C-Set (source: EP)
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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022258648 A1 20221215; CN 117813351 A 20240402; EP 4352160 A1 20240417
DOCDB simple family (application)
EP 2022065468 W 20220608; CN 202280055852 A 20220608; EP 22733002 A 20220608