公开(公告)号：US11094437B2

公开(公告)日：2021-08-17

申请号：US14780605

申请日：2014-03-26

Applicant: BASF SE

Inventor： Sandro Pagano ,  Jae Hyung Hwang ,  Ralf Liebscher ,  Frank Prechtl ,  Oliver Koch

IPC: H01F1/42 ,  H01F3/08 ,  H01F41/02 ,  B22F1/00 ,  H01F1/24 ,  B22F1/02 ,  H01F1/26

Abstract: The invention relates to a soft-magnetic powder comprising a core of a soft-magnetic material and a coating, the coating comprising an insulation treatment compound and an inhibitor, the inhibitor being: (e) a carboxylic acid with the general formula (I) wherein R1 is a single bond or C1-C6-alkylene, R2 to R6 are each independently H, OH, —X—COOH, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C6-C12-aryl, COOR7, OR8, or two adjacent groups R2 to R6 together form a ring, X is a single bond or C1-C6-alkylene; R7, R8 are C1-C20-alkyl; or a salt of the carboxylic acid, and/or (f) a compound of the general formula (II) (R9—O—)(R10—O—)(R11—O—)PO  (II) wherein R9 to R11 independently of each other indicate C1-C20-alkyl, C2-C20-alkenyl, C2-C6-alkynyl, C3-C7-cycloalkyl, C6-C12-aryl, unsubstituted or substituted with one or more groups selected from OH and NH2, or R9 to R11 are each independently a polydiol moiety having a molecular weight MW of 500 to 30000 g/mol which is optionally capped at the end by —C1-C20-alkyl and/or at the connection to O atom bonding to P by C1-C20-alkylene, or R10, R11 are each independently H. The invention further relates to a process for producing the soft-magnetic powder and an electronic component comprising the soft-magnetic powder.

公开(公告)号：US10373748B2

公开(公告)日：2019-08-06

申请号：US15034039

申请日：2014-11-04

Applicant: BASF SE

Inventor： Sandro Pagano ,  Jae Hyung Hwang ,  Ralf Liebscher ,  Frank Prechtl ,  Oliver Koch ,  Otto Watzenberger ,  Volker Klock

IPC: H01F1/36 ,  H01F1/20 ,  H01F1/26 ,  C23C30/00 ,  H01F3/08 ,  H01F41/02 ,  B22F1/02

Abstract: The invention relates to a soft-magnetic powder coated with a silicon based coating, wherein the silicon based coating comprises at least one of the following fluorine containing compositions: a) a fluorine containing composition of formula (I) Si1-0,25aM1aO2-0,5bFb  (I) wherein a is in the range of 0.015 to 0.52, b is in the range of 0.015 to 0.52, M1 is H, K, Rb, Cs or NR14, wherein each R1 is independently selected from the group consisting of H, C1-6 alkyl, phenyl and benzyl; or b) a fluorine containing composition of formula (II) Si1-0,75cM2cO2-0,5dFd  (II) wherein c is in the range of 0.005 to 0.17, d is in the range of 0.015 to 0.52, M2 is B or Al; or c) a fluorine containing composition of formula (III) Si1-1,25ePeO2-0,5fFf  (III) wherein e is in the range of 0.003 to 0.10, f is in the range of 0.015 to 0.52. The invention further relates to a process of coating the soft-magnetic powder, the use of such soft-magnetic powder and an electronic component including such soft-magnetic powder.