	US 11,718,706 B2
	Compositions for use in impregnation of paper bushings
Christian Beisele, Müllheim (DE); Hubert Wilbers, Schopfheim (DE); and Daniel Baer, Riehen (CH)
Assigned to HUNTSMAN ADVANCED MATERIALS Licensing (Switzerland) GmbH, Basel (CH)
Appl. No. 16/980,894
Filed by Huntsman Advanced Materials Licensing (Switzerland) GmbH, Basel (CH)
PCT Filed Feb. 22, 2019, PCT No. PCT/EP2019/054430 § 371(c)(1), (2) Date Sep. 15, 2020, PCT Pub. No. WO2019/174891, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 18162360 (EP), filed on Mar. 16, 2018.
Prior Publication US 2021/0024684 A1, Jan. 28, 2021
Int. Cl. C08G 59/22 (2006.01); C08G 59/42 (2006.01); C08L 63/00 (2006.01); D21H 17/52 (2006.01); H01B 3/52 (2006.01)

CPC C08G 59/226 (2013.01) [C08G 59/42 (2013.01); C08L 63/00 (2013.01); D21H 17/52 (2013.01); H01B 3/52 (2013.01)]

14 Claims

1. A curable mixture comprising (i) a resin mixture comprising a bisphenol-A-diglycidylether (BADGE) and a bisphenol-F-diglycidylether (BFDGE), (ii) methyltetrahydrophthalic anhydride (MTHPA), and (iii) an accelerator selected from N,N,N′-trimethyl-N′-hydroxyethyl-bisaminoethyl ether, N-(3-dimethylaminopropyl)-N, N-diisopropanolamine, N,N-bis(3-dimethylaminopropyl)-N-isopropanolamine, and a mixture thereof wherein the curable mixture contains less than 0.2 pbw of the accelerator based on 100 pbw of the resin mixture.