The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 1996
Filed:
Nov. 07, 1994
John T Hochheimer, Downingtown, PA (US);
Jerry I Steinberg, Wilmingtown, DE (US);
Michael S Skrzat, Harleysville, PA (US);
Heraeus Incorporated, West Conshohocken, PA (US);
Abstract
Coating compositions of silver flake suspended in predominantly aqueous vehicle is disclosed for laying down a coating of electrically conductive metal on resistive or dielectric substrates useful in the electronics industry. The coating compositions provide an ideal combination of high silver loading and low viscosity for spray painting desired thickness coatings at high speed in a single pass. The novel compositions include silver flake, water soluble polymer binder, water and a substantially completely water soluble, organic co-solvent. The coating compositions have good green strength after drying and may be used to apply an electrically conductive base to enable electroplating plastic or elastomer parts. Optional sintering adhesives can be added to allow high temperature, permanent bonding of the silver to a ceramic substrate. The coating compositions have excellent storage stability such that settled solids can be redispersed readily with brief and/or mild agitation.