Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1986-03-04
1988-03-01
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428220, 428901, 427438, B32B 300
Patent
active
047285605
ABSTRACT:
Electrical printed circuit boards are obtained in an elegant manner without the usual etching methods and without using bonding agent layers in a wet chemical manner on the basis of the principles of the semi or fully additive technique by using precious metal compounds for activation and base material of a type which has (a) a specific total pore volume per unit area of 0.015-0.045 dm.sup.3 /m.sup.2, (b) a mean pore diameter of 0.05-5.0 .mu.m and (c) a mean pore depth of 0.05-4.0 .mu.m.
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Merten Rudolf
Sirinyan Kirkor
VON Gizycki Ulrich
Wolf Gerhard D.
Bayer Aktiengesellschaft
Kittle John E.
Ryan Patrick J.
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