Chemical reducing solution for copper oxide

Compositions – Reductive bleachant – deoxidant – reductant – or generative – Hydride containing

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2521881, 427 98, 427437, 4274431, C01B 610, C09K 1502

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active

057360650

ABSTRACT:
A chemical reducing solution obtained by using an alkali boron hydride as a reductant and adding thereto a water-soluble, polyoxyethylene chain-containing organic compound having a molecular weight of 200 or above molecule as an additive has merits in that it can reduce copper oxide to metallic copper while maintaining the needle-like form of copper oxide as completely as possible and the reduction can be completed in a short period of time by a simple procedure, so that the chemical reducing solution is successfully usable in a process for producing a multi-layer printed circuit board.

REFERENCES:
patent: 2643199 (1953-06-01), Hersch
patent: 4295986 (1981-10-01), Gordon
patent: 4548644 (1985-10-01), Nakaso et al.
patent: 4563217 (1986-01-01), Kikuchi et al.
patent: 4634468 (1987-01-01), Gulla et al.
patent: 4642161 (1987-02-01), Akahoshi et al.
patent: 4725314 (1988-02-01), Gulla et al.
patent: 4770751 (1988-09-01), Kawagishi et al.
patent: 4838937 (1989-06-01), Ott
patent: 4966786 (1990-10-01), Ehrich et al.
Chemical Abstract No. 119:48993, Entitled "Preparation of Benzhydrol by Peg Catalysis", by Li et al., Taken From: Huaxue Shiji (1993).
Chemical Abstract No. 119:27657, Entitled "Using Sodium Borohydride Polyethylene Glycol Methyl Ether 400 as an Effective Reducing Agent Under PCT Conditions", by Blantan et al., Taken From: J. Microchem, (1993).
Chemical Abstract No. 121:115334, Entitled: "Solutions for Treatment of Oxidized Nonferrous Metals Before Electroless Plating", by Nakazawa et al. (Feb. 22, 1994).
Chemical Abstract No. 98:52716, Entitled: "Catalytic Activity of Polyethylene Glycols in the Reduction of Carbonyl Compounds Under Phase-Transfer Catalyzed Conditions", by Zupancic, Taken From: Synthetic Commun . (1982).
Zupancic, B.G. et al. "Catalytic Activity of Polyethylene Glycols in the Reduction of Carbonyl Compounds Under Phase-Transfer Catalyzed Conditions" Taken From: Synthetic Communications, vol. 12, No. 11, (1982), pp. 881-886 .

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