Etching agent for polyimide type resins and process for etching

Details Etching agent for polyimide type resins and process for etching Etching agent for polyimide type resins and process for etching

1982-11-30

1984-02-14

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156655, 1566591, 252 795, B29C 1708, B44C 122, C03C 1500, C03C 2506

Patent

active

044314787

ABSTRACT:
Polyimide-type-resin-etching rate can remarkably be enhanced by combining tetramethylammonium hydroxide or an aqueous solution of tetramethylammonium hydroxide with at least one member selected from the group consisting of amide compounds represented by the following formula: ##STR1## and amide compounds represented by the following formula: ##STR2## and amine compounds represented by the following formula:

REFERENCES:
patent: 3361589 (1968-01-01), Lindsey
patent: 3871930 (1975-03-01), Fish
patent: 4369090 (1983-01-01), Wilson et al.

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