Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-04-25
1995-10-31
Gallagher, John J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1562733, 156305, 1563086, 204131, 264340, 525903, B32B 3100
Patent
active
054626285
ABSTRACT:
Certain organic polymeric materials are capable of reversibly accepting or donating electrons from a reducing entity. The redox sites in the polymer accept electrons and, as a result, a change in the properties of the polymer occurs. This change is useful in modifying or etching the polymeric material. The material can be modified by incorporation of metallic seeds into the material at a controlled depth. The seeds are incorporated by interaction of cations of the metals with the redox sites in the polymer, which cause the reduction of the cations to form the neutral metallic seeds. Subsequent exposure of the polymeric material containing the seeds to an electroless bath causes further deposition of metal having the desirable characteristic of good adhesion to the polymeric material. Etching of the polymeric material can be carried out as a result of an increase in solubility of the polymer in aprotic solvents when its redox sites have accepted electrons. The increased solubility allows openings to be etched in certain areas of the polymeric material that have been reduced, leaving other areas unchanged.
REFERENCES:
patent: 3326742 (1967-06-01), Shepherd
patent: 3770573 (1973-11-01), Dunphy et al.
patent: 3821054 (1974-06-01), Trostyanskaya et al.
patent: 4889579 (1989-12-01), Burch
Buchwalter Stephen L.
Goldberg Martin
Grebe Kurt R.
Kovac Caroline A.
Matthew Linda C.
Gallagher John J.
International Business Machines - Corporation
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