公开(公告)号：US3563784A

公开(公告)日：1971-02-16

申请号：US3563784D

申请日：1968-09-09

Applicant: MACDERMID INC

Inventor： INNES WILLIAM P ,  OTTAVIO EUGENE D D ,  BROWN SHARON D

IPC: C23C18/20 ,  C23C18/26 ,  C23C3/00 ,  B44D1/40

CPC classification number: C23C18/30 ,  C23C18/208 ,  C23C18/24 ,  C23C18/26 ,  C23C18/285

Abstract: AQUEOUS DILUTE SURFACTANT SOLUTIONS ARE EMPLOYED IN THE TREATMENT OF PLASTIC SUBSTRATES TO PREPARE THEM FOR ELECTROLESS PLAING TO ENSURE COMPLETE COVERAGE OF THE SUBSTRATE SURFACE BY THE METAL. THE SUBSTRATES ARE IMMERSED IN THE SUFACTANT SOLUTION AS A PRELIMINARY STEP IMMEDIATELY PRECEDING THE ACTIVATION OF THE SUBSTRATE IN THE NORMAL CYCLE OF ELECTROLESS PLATING OPERATIONS, SUPPLANTING VARIOUS OTHER PRE-ACTIVATION STEPS AND, UNLIKE SUCH PRIOR STEPS, BEING OPERATIVE FOR ALL TYPES OF SYNTHETIC RESINS ENCOUNTERED IN ELECTROLESS PLATING OPERATIONS.

公开(公告)号：US3682786A

公开(公告)日：1972-08-08

申请号：US3682786D

申请日：1970-02-18

Applicant: MACDERMID INC

Inventor： BROWN SHARON D ,  OTTAVIO EUGENE D D ,  KUZMIK JOHN J ,  GRUNWALD JOHN J

IPC: C23C18/20 ,  C23C18/26 ,  C23C18/28 ,  H05K3/18 ,  C23B5/64

CPC classification number: C23C18/26 ,  C23C18/208 ,  C23C18/285 ,  C23C18/30 ,  H05K3/188 ,  Y10S205/927 ,  Y10S205/928

Abstract: PLASTIC SUBSTRATES, SUCH AS POLYPROPYLENE, ABS, ETC. ARE PLATED WITH AN ADHERENT METAL COATING IN A PROCESS WHICH AVOIDS COMPLETELY THE ART-EMPLOYED STEPS OF ETCHING IN A CHROMIC-SULFURIC ACID SOLUTION AS WELL AS THE DEPOSITION OF A THIN COATING OF METAL ON THE SUBSTRATE FROM AN ELECTROLESS PLATING BATH PRIOR TO THE ELECTROLYTIC PLATING OPERATION. PLASTIC SUBSTRATES ARE (1) TREATED WITH A SOLUTION OR DISPERSION OF SULFUR IN A SUITABLE SOLVENT, SUCH AS A TRICHLOROETHYLENE, (2) CONTACTED WITH AN AQUEOUS SOLUTION OF A CUPROUS SALT; SUCH AS CUPROUS CHLORIDE, (3) OPTIONALLY TREATED WITH AN AQUEOUS SOLUTION OF PALLADIUM CHLORIDE AND FINALLY (4) ELECTROPLATED TO FORM A COATING OF THE DESIRED METAL OF THE DESIRED THICKNESS.