Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1984-08-15
1985-10-08
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523173, 310 43, C08L 6300
Patent
active
045461309
ABSTRACT:
A molding material having low moisture permeability for use in the stators of submersible motors. The molding material comprises approximately 20-30 parts by weight of an epoxy resin, approximately 1-3 parts by weight of a curing agent, approximately 0.5-1.5 parts by weight of zinc stearate, approximately 2-3 parts by weight of a mechanical reinforcing agent, approximately 7.5-56.5 parts by weight of quartz powder, and one or more substances selected from anhydrous gypsum and silica gel, with the total amount of said inorganic substance(s) being approximately 55-20 parts by weight, and with the total amount of quartz powder and said inorganic substance(s) being approximately 62.5-76.5 parts by weight. Because of its low moisture permeability, the insulating properties of the molding material can be maintained indefinitely.
REFERENCES:
patent: Re28646 (1975-12-01), Hedrick et al.
patent: 3901769 (1975-08-01), Takatori et al.
patent: 4271061 (1981-06-01), Suzuki et al.
patent: 4285853 (1981-08-01), Schreiber
patent: 4387311 (1983-06-01), Kobayashi et al.
patent: 4393177 (1983-07-01), Ishii et al.
Nishida Mitsuhiro
Okahashi Kazuo
Sonoda Nobuo
Takagi Shoji
Yamamoto Sakuei
Griffin Ronald W.
Mitsubishi Denki & Kabushiki Kaisha
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