Aqueous insulating varnishes

Details Aqueous insulating varnishes Aqueous insulating varnishes

1976-01-20

1977-03-08

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 9, 260 292E, 260 75T, 260 75N, 428458, C08G 6376, C08G 6368, C08J 306

Patent

active

040111857

ABSTRACT:
Insulating varnishes capable of forming a film possessing excellent electrical and mechanical properties can be obtained by reacting a reaction product of (1) a reactant of a dicarboxylic acid or a tricarboxylic acid or a derivative thereof comprising an aromatic dicarboxylic acid or a derivative thereof in an amount of at least 95 equivalent % [the term "equivalent" as used herein means (number of moles) x (number of reactive functional groups in one molecule)] of the total of the (1), (2) a primary diol and (3) an aliphatic polyhydric alcohol having at least 3 hydroxyl groups with (4) an aromatic teracarboxylic acid or derivative thereof, and subsequently dispersing the reaction product into an aqueous solution containing ammonia or an organic amine.

REFERENCES:
patent: 3021308 (1962-02-01), Caywood et al.
patent: 3068207 (1962-12-01), Iannicelli
patent: 3205192 (1965-09-01), Denson
patent: 3397254 (1968-08-01), Wynstra et al.
patent: 3459584 (1969-08-01), Caldwell
patent: 3544496 (1970-12-01), Formaini
patent: 3709846 (1973-01-01), Tsou
patent: 3725329 (1973-04-01), Jacoby et al.

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