Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1988-11-07
1990-07-17
Lacey, David L.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156668, 427307, B05D 310
Patent
active
049419404
ABSTRACT:
Formulations are provided for pre-swelling and etching of functionalized polymers, such as polycarbonate in one, two and three steps. The etched surface can then be plated with electroless nickel or copper with satisfactory adhesion of the plated metals. Swelling agents make polymer molecules on and near the surface of the polymer easily accessible to a degradation agent. A degradation agent degradates the polymer molecules. If required, a solubilizing agent increases the miscibility of the degradation agent and the swelling agent. A wetting agent increases the effectiveness of the etching agent.
In the one-step process, polymer parts are dipped in a solution containing at least one swelling agent and at least one degradation agent. In the two-step process, polymer parts are first treated with a solution of a swelling agent followed by etching with a solution of degradation agent. In the three-step process, polymer parts are first micro-roughened with a solution of a swelling agent, then etched with a solution of mineral acids followed by dipping in a caustic bath to make the surface wettable.
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Bellemare Richard A.
Bolikal Durgadas
Patel Gordhanbhai N.
Behr Omri M.
Bruckner John J.
JP Laboratories, Inc.
Lacey David L.
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