Process for treating the surface of polyimides to improve proper

Details Process for treating the surface of polyimides to improve proper Process for treating the surface of polyimides to improve proper

1988-11-25

1990-06-05

Lusignan, Michael

Coating processes

Electrical product produced

Welding electrode

20419212, 427306, 427322, 427437, B05D 306

Patent

active

049313100

ABSTRACT:
A process is provided for improving the surface properties of polyimide articles which contain significant amounts of transimide. The surface of the polyimide containing the transimide is first treated with a base to convert the surface layer of both the polyimides and the transimides to polyamic salt. Thereafter the surface layer of the converted polyamic salt is treated with an acid to convert the layer to a polyamic acid. This is followed by a cure preferably in infrared radiation at a sufficiently rapid rate to prevent the formation of any significant amounts of transimide and provide only polyimide. Following this treatment metallization is applied to the improved surface layer.

REFERENCES:
patent: 29134 (1877-02-01), Edelman et al.
patent: 3179633 (1965-04-01), Endrey
patent: 3361589 (1968-01-01), Lindsey
patent: 3416994 (1968-12-01), Chalmers et al.
patent: 3505168 (1970-04-01), Dunphy et al.
patent: 3770528 (1973-11-01), Hermes
patent: 3770573 (1973-11-01), Dunphy et al.
patent: 4424095 (1984-01-01), Frisch et al.
patent: 4440643 (1984-04-01), Makino et al.
patent: 4543295 (1985-09-01), St. Clair et al.
patent: 4623563 (1986-11-01), Noda et al.
patent: 4731287 (1988-03-01), Noda et al.
patent: 4775449 (1988-10-01), Dumas et al.
patent: 4842946 (1989-06-01), Foust et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 10, Mar. 1982, Improved Adhesion Between Polymer and Polyimide Layers.
IBM Technical Disclosure Bulletin, vol. 28, No. 6, Nov., 1985, Switchable Interface for Resistive Ribbon Printing.

Affiliated with

Also associated with

Rating

Process for treating the surface of polyimides to improve proper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for treating the surface of polyimides to improve proper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for treating the surface of polyimides to improve proper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-490870