Process for etching organic polymeric materials

Details Process for etching organic polymeric materials Process for etching organic polymeric materials

1990-01-10

1990-10-02

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

1566591, 252 792, 252 795, B44C 122, B29C 3700, C03C 1500, C03C 2506

Patent

active

049604910

ABSTRACT:
An improved process for etching of polymeric materials, in particular polyimide, by reaction with either an acid or alkaline etching solution is described. A reactive material, such as aluminum metal, is added to the etching solution in order to generate nascent hydrogen. The generation of this gas promotes the etching process by increasing the etching rate and dispersion of the etch residue.

REFERENCES:
patent: 3235426 (1966-02-01), Bruner et al.
patent: 4281034 (1981-07-01), Narayan
patent: 4334949 (1982-06-01), Ameen et al.
patent: 4606998 (1986-08-01), Ciodgo

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