Plating pre-treatment in acrylonitrile butadiene styrene

Claim 1

A METHOD OF METALIZING ACRYLONITRILE-BUTADIENE-STYRENE SURFACE INCLUDING THE STEPS OF: CONTACTING SAID SURFACE WITH A CONDITIONING AND ACTIVATING SOLUTION FOR PREPARING THE SURFACE TO UNIFORM ACCEPT AN ADHERENT METAL DEPOSIT, SAID SOLUTION CONSISTING ESSENTIALLY OF IN 1 LITER THEREOF ABOUT 35 TO ABOUT 75 CUBIC CENTIMETRES OF METHYL ETHYL KETONE TO INSURE UNIFORM COVERAGE OF THE SURFACE WITHOUT PRODUCING A BLISTERED DEPOSIT, ABOUT 5 TO ABOUT 100 CUBIC CENTIMETRES OF CONCENTRATED SULFURIC ACID TO INCREASE ADHENSION OF THE METAL DEPOSIT TO THE SURFACE, UP TO ABOUT 5.6 TO 10-4 MOLES OF KETOPALLADIUM COMPLEX FORMED BY THE REACTION OF PALLADIUM CHLORIDE WITH METHYL ETHYL KETONE TO ACTIVATE SAID SURFACE AND THE BALANCE METHYL ALOHOL; AND CONTACTING SAID SURFACE WITH A REDUCING SOLUTION OF A REDUCIBLE COMPOUND OF A COATING METAL TO ELECTROLESSLY DEPOSIT SAID COATING METAL UNIFORMLY AND ADHERENTLY ONTO SAID SURFACE.

Claim 2

A METHOD OF METALIZING ACRYLONITRILE-BUTADIENE-STYRENE SURFACE INCLUDING THE STEPS OF: CONTACTING SAID SURFACE WITH A CONDITIONING AND ACTIVATING SOLUTION FOR PREPARING THE SURFACE TO UNIFORM ACCEPT AN ADHERENT METAL DEPOSIT, SAID SOLUTION CONSISTING ESSENTIALLY OF IN 1 LITER THEREOF ABOUT 35 TO ABOUT 75 CUBIC CENTIMETRES OF METHYL ETHYL KETONE TO INSURE UNIFORM COVERAGE OF THE SURFACE WITHOUT PRODUCING A BLISTERED DEPOSIT, ABOUT 5 TO ABOUT 100 CUBIC CENTIMETRES OF CONCENTRATED SULFURIC ACID TO INCREASE ADHENSION OF THE METAL DEPOSIT TO THE SURFACE, UP TO ABOUT 5.6 TO 10-4 MOLES OF KETOPALLADIUM COMPLEX FORMED BY THE REACTION OF PALLADIUM CHLORIDE WITH METHYL ETHYL KETONE TO ACTIVATE SAID SURFACE AND THE BALANCE METHYL ALOHOL; AND CONTACTING SAID SURFACE WITH A REDUCING SOLUTION OF A REDUCIBLE COMPOUND OF A COATING METAL TO ELECTROLESSLY DEPOSIT SAID COATING METAL UNIFORMLY AND ADHERENTLY ONTO SAID SURFACE.

Claim 3

A method of metalizing acrylonitrile-butadiene-styrene surface including the steps of: contacting said surface with a strong acidic, oxidizing solution to etch said surface; rinsing said surface to remove said strong, acidic oxidizing solution therefrom; contacting said surface with a conditioning and activating solution for preparing the surface to uniformly accept an adherent metal deposit, said solution consisting essentially of in one liter thereof about 35 to about 75 cubic centimeters of methyl ethyl ketone to insure uniform coverage of the surface without producing a blistered deposit, about 5 to about 55 cubic centimeters of concentrated sulfuric acid to increase adhesion of the metal deposit to the surface, up to about 1.4 X 10 4 moles of ketopalladium complex formed by the reaction of palladium chloride with methyl ethyl ketone to activate said surface and the balance methyl alcohol; and contacting said surface with a reducing solution of a reducible compound of a coating metal to electrolessly deposit said coating metal uniformly and adherently onto said surfAce.

Claim 4

A method of metalizing acrylonitrile-butadiene-styrene surface including the steps of: contacting said surface with a strong acidic, oxidizing solution to etch said surface; rinsing said surface to remove said strong, acidic oxidizing solution therefrom; contacting said surface with a conditioning and activating solution for preparing the surface to uniformly accept an adherent metal deposit, said solution consisting essentially of in one liter thereof about 35 to about 75 cubic centimeters of methyl ethyl ketone to insure uniform coverage of the surface without producing a blistered deposit, about 5 to about 55 cubic centimeters of concentrated sulfuric acid to increase adhesion of the metal deposit to the surface, up to about 1.4 X 10 4 moles of ketopalladium complex formed by the reaction of palladium chloride with methyl ethyl ketone to activate said surface and the balance methyl alcohol; and contacting said surface with a reducing solution of a reducible compound of a coating metal to electrolessly deposit said coating metal uniformly and adherently onto said surfAce.