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Method of depositing a metal on a surface

  • US 4,100,037 A
  • Filed: 03/08/1976
  • Issued: 07/11/1978
  • Est. Priority Date: 03/08/1976
  • Status: Expired due to Term
First Claim
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1. A method of depositing a metal on a surface capable of retaining a colloidal species thereon which comprises:

  • (a) selectively coating a portion of the surface with a colloidophobic material selected from the group of colloidophobic materials consisting of (1) a composition comprising dimethoxy polysiloxane having a viscosity ranging from 20 to 100,000 centipoise, (2) a composition comprising a polyfluoroalkyl ester, (3) a composition comprising a perfluoro epoxy resin, and (4) a composition comprising a colloidal silica having chemically bonded to the surface thereof amounts of from about 0.01 to about 30 percent by weight based on the weight of the silica of a disilizane compound having the general formula ##STR9## wherein R1, R2, R3, R4, R5 and R6 are like or unlike radicals selected from the group consisting of alkyl having one to five carbon atoms to render said portion collodiophobic and to delineate an exposed surface pattern capable of retaining a colloidal species thereon; and

    (b) treating said selectively coated surface with a sol comprising a colloidal species selected from the group consisting of (a1) a colloidal species capable of reducing an activating metal ion to an activating metal, and (b1) a colloidal activating metal species capable of participating in an electroless metal deposition to deposit said colloidal species on said exposed surface pattern.

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