Polymer surfaces for subsequent plating thereon and improved met

Details Polymer surfaces for subsequent plating thereon and improved met Polymer surfaces for subsequent plating thereon and improved met

1990-10-26

1992-07-21

Lewis, Michael

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428412, 428901, 428675, B32B 1508, B32B 1520

Patent

active

051321912

ABSTRACT:
Method of modifying an aromatic polymer surface to improve adhesion of a metal layer thereon and to the articles produced therefrom. Polymer molecules disposed on the surface of the aromatic polymer such as polycarbonate, are nitrated by a contact with a nitrating solution such as a mixture of nitric and sulfuric acid and then ammonolytically cleaved by a contact with an ammonolytic solution such as ammonium hydroxide. The ammonolyzed surface is thus chemically modified to become hydrophilic. The chemically modified surface is electrolessly plated with a primary metal layer. A secondary metal layer is then electrolessly or electrolytically applied on top of the primary metal layer until a metal layer of a desired thickness is attained.
The present invention further discloses articles such as an EMI shielded enclosure or a printed circuit board having metal layers as an EMI shield or a conductive metal trace pattern respectively.

REFERENCES:
patent: 4775557 (1988-10-01), Bastenbeck et al.
patent: 4832799 (1989-05-01), Knudsen et al.
patent: 4941940 (1990-07-01), Patel et al.
patent: 4959121 (1990-09-01), Dumas et al.
Crivello, J., Nitrations and Oxidations with Inorganic Nitrate Salts in Trifluoroacetic Anhydride, 1981, pp. 3056-3060, J. Org. Chem., 46.
Rantell, A., The Influence of Surface Chemistry on the Adhesion of Copper Deposited on Plastic Substrates, 1969, pp. 197-202, Transactions of the Institute of Metal Finishing, vol. 47.

Affiliated with

Also associated with

Rating

Polymer surfaces for subsequent plating thereon and improved met does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymer surfaces for subsequent plating thereon and improved met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer surfaces for subsequent plating thereon and improved met will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-842460