Reducing agent for forming an acid resistant barrier

Details Reducing agent for forming an acid resistant barrier Reducing agent for forming an acid resistant barrier

1997-09-15

1999-11-02

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1411, 106 1415, 10628723, 10628724, 10628725, 10628726, C23F 1114

Patent

active

059762284

ABSTRACT:
A composition that enhances the acid resistance of copper oxide. The composition includes a solution of an alkali metal borohydride and a quaternary ammonium ion in amounts selected such that when the composition is applied to copper oxide, the composition enhances the acid resistance of the copper oxide. The preferred alkali metal borohydride is sodium borohydride or potassium borohydride, and the preferred quaternary ammonium ion has the formula ##STR1## wherein each R1, R2, R3, R4 independently comprises a lower alkyl, hydroxylalkyl or carboxyalkyl group.

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patent: 4997722 (1991-03-01), Adler
patent: 5472563 (1995-12-01), Kogawa et al.

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