Patent number: 10214550
Abstract: Disclosed herein are compounds of formula (I): wherein: the groups R1, R2, R3, R4, R5, R6, R7, R8, R1?, R2?, R3?, R4?, R5?, R6?, R7?, R8?, R1?, R2?, R3?, R4?, R5?, R6?, R7?, R8? are defined herein; and at least one of the following conditions is satisfied: two radicals from at least one of the four following pairs of radicals are not the same radical: R1? and R8?, R2? and R7?, R3? and R6?, R4? and R5?, and two radicals from at least one of the four following pairs of radicals are not the same radical: R1? and R8?, R2? and R7?, R3? and R6?, R4? and R5?.
Type:
Grant
Filed:
June 12, 2017
Date of Patent:
February 26, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Katrin Marie Dyballa, Robert Franke, Dirk Fridag, Armin Boerner, Detlef Selent