公开(公告)号：EP1851270B1

公开(公告)日：2009-12-23

申请号：EP06708271.9

申请日：2006-02-15

Applicant: BASF SE

Inventor： BRAND, Fabien Jean ,  BRUNNER, Martin ,  GERSTER, Michèle ,  LEGGIO, Andrew Joseph ,  TINKL, Michael

IPC: C08K5/00

CPC classification number: C08K5/02

公开(公告)号：EP2005453B1

公开(公告)日：2009-09-09

申请号：EP07727618.6

申请日：2007-04-02

Applicant: BASF SE

Inventor： CHIN, Hui ,  GANDE, Matthew Edward ,  LEGGIO, Andrew Joseph

IPC: H01G7/02

CPC classification number: H01G7/023 ,  Y10T442/60

Abstract: Disclosed are electret compositions with outstanding thermal and charge stability. The electret compositions comprise a melt blend of a thermoplastic polymer and at least one hindered hydroxylamine ester compounds that comprise at least one moiety of the formula (I) Where R a ' is a monoacyl or diacyl radical; R 1 - R 4 are each C 1 -C 6 alkyl; and R 5 and R 6 are each, independently of one another, hydrogen, C 1 -C 6 alkyl or C 6 -C 10 aryl; or R 5 and R 6 are together oxygen. The melt blends are subjected to an electret treatment, for example, a corona treatment.