Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1984-08-24
1985-12-24
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523453, 523456, C08K 539, C08K 549
Patent
active
045607168
ABSTRACT:
Epoxy resin compositions including an epoxy resin, a hardener and an additive for forming a rust preventing film are provided. The additive is at least one selected from dithiophosphoric acids, dithiophosphoric acid derivatives, metal salts of dithiocarbamic acids and oxidized waxes. The composition may also include a secondary additive such as an organosilicon compound, an organoaluminum compound or an organotitanium compound for dithiophosphoric acid and/or dithiophosphoric acid derivative; an alkylarylsilsesquioxane silicone compound for a metal salt of dithiocarbamic acid; an alkylarylsilsesquioxane silicone compound, an organoaluminum compound, an organotitanium compound or an organotin compound for an oxidized wax. These epoxy resin compositions, when used as encapsulating materials, prevent moisture and impurities from penetrating into the surface of an encapsulated product because of the rust preventing film existing between the composition and the encapsulated product.
REFERENCES:
patent: 3242130 (1966-03-01), Jackopin
patent: 3577346 (1971-05-01), McKeown
patent: 3956235 (1976-05-01), Pasternack et al.
patent: 4069192 (1978-01-01), Monte
patent: 4100089 (1978-07-01), Cammack
patent: 4100327 (1978-07-01), Smith et al.
patent: 4198310 (1980-04-01), Lyons et al.
Matsushita Mitsumasa
Sato Shigeyuki
Hoke Veronica P.
Kabushiki Kaisha Toyota Chuo Kenkyusho
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