Primer for the metallization of substrate surfaces

• US 5,378,268 A
• Filed: 11/07/1991
• Issued: 01/03/1995
• Est. Priority Date: 11/16/1990
• Status: Expired due to Term

• Current Assignee: Bayer AG, Atotech Deutschland GmbH (MKS Instruments Incorporated)
• Original Assignee: Bayer AG
• Inventors: Gizycki, Ulrich V., Wolf, Gerhard D., Merten, Rudolf, Benda, Bruce, Sirinyan, Kirkor, Henning, Wolfgang
• Primary Examiner(s): Lieberman, Paul
• Assistant Examiner(s): EINSMANN, MARGARET V
• Application Number:
  US07/788,957
• Time in Patent Office: 1,153 Days
• Field of Search: 106/1.11, 106/1.05-1.29, 427/306, 524/398, 524/403, 524/513, 524/539
• US Class Current: 106/1.11
• CPC Class Codes: C23C 18/28 Sensitising or activating

Abstract

Primers, essentially consisting of a film former or matrix former, an additive, an ionic and/or colloidal noble metal, a filler and a solvent, are suitable for coating substrate surfaces for subsequent chemical metallization.

Claims

1. A primer for the chemical metallization of glass, metal, or plastic surfaces, consisting essentially of

a) 3-30 percent by weight of a film former or matrix former selected from the group consisting of

i. polyurethane resins, and

ii. polymers or copolymers based on styrene, acrylic acid, acrylonitrile or acrylic esters;

b) 0.1-15 percent by weight of an additive having a molecular weight of 500-20,000 and an overall surface tension in the range of 45-65 mN/m, selected from the group consisting of a polyester based on adipic acid or phthalic acid and butanediol or trimethylolpropane, a polyamide, polyethyl oxazoline, polymethyl oxazoline, polypropyl oxazoline, polybutyl oxazoline and mixtures thereof;

c) 0.05-2.5 percent by weight of an ionic or colloidal noble metal or mixture thereof or a covalent compound or complex compound thereof with organic ligands;

d) 0.5-35 percent by weight of an organic or inorganic filler or a mixture thereof; and

e) 50-90 percent by weight of an organic solvent.

2. The primer of claim 1 wherein the film former consists of a polyurethane.

3. The primer of claim 1, which contains a silicate or a conductive carbon black or a mixture thereof as the filler.

4. A primer according to claim 1 wherein component c) is an organometallic complex compound or a complex with an organic ligand.