Prepn. of electrical insulating, impregnating lacquer contg. solvent - by diluting spent epoxide] impregnating resin with e.g. xylene, heating then adding to solvent-contg. lacquer based on e.g. spent polyesterimide
Номер патента: DE4118142A1
Опубликовано: 24-12-1992
Автор(ы): Bernd Drechsler, Helfried John, Wolfgang Dr Golbig
Принадлежит: VEM Sachsenwerk GmbH
Опубликовано: 24-12-1992
Автор(ы): Bernd Drechsler, Helfried John, Wolfgang Dr Golbig
Принадлежит: VEM Sachsenwerk GmbH
Реферат: In producing a solvent-contg. electrical insulating impregnating lacquer, esp. one based on polyesterimide- and phenolic resins, from spent epoxide resin, esp. impregnating resin based on dianepoxide resin contg. anhydride hardeners, (a) the spent resin is (gradually) diluted with xylene or butanol; and (b) heated to 50 +/- 10 deg. C.; (c) the spent resin is then gradually added to a known common solvent-contg. electrical insulating lacquer based on spent polyesterimide- and phenolic resins, at a temp. of 15-20 deg. C; and finally (d) a solvent mixt. of xylene and butanol is gradually added to the resulting mixed lacquer. The spent resin is pref. added to the spent lacquer in amounts of 20, 30 and 40% the total wt. The fraction of spent resin in the electrical insulating lacquer should pref. not exceed 20%. USE/ADVANTAGE - The electrical insulating impregnation lacquer is used in the impregnation of both high- and low voltage machinery.
Impregnating resin formulation for electrical windings
Номер патента: RU2598445C2. Автор: Клаус-Вильхельм ЛИНЕРТ,Ким Бастиан БЕБЕНРОТ,МАСРИ Меджди АЛЬ,Штефани ХАЙНРИХ. Владелец: Элантас Гмбх. Дата публикации: 2016-09-27.