Bath for the electrochemical deposition of high-gloss white...

Details Bath for the electrochemical deposition of high-gloss white... Bath for the electrochemical deposition of high-gloss white...

2005-04-12

2005-04-12

Wong, Edna (Department: 1753)

Coating processes

Immersion or partial immersion

C427S436000, C106S001240, C106S001280, C205S261000

Reexamination Certificate

active

06878411

ABSTRACT:
The invention concerns a bath for the electrochemical deposition of high-gloss white rhodium coatings and a whitening agent for the same. The brightness or degree of whiteness of the deposited coatings is significantly increased by means of compounds having the formula R—SOm—H, wherein m is the numbers 3 or 4 and R is a straight-chain or branched chain or cyclic alkyl group having up to 20 C atoms, as a whitening agent. The thickness of the coating that can be deposited without a bloom is also significantly increased.

REFERENCES:
patent: 3780198 (1973-12-01), Pahl et al.
patent: 4173178 (1979-11-01), Wieland
patent: 4402802 (1983-09-01), Kreuter et al.
patent: 5329975 (1994-07-01), Heitel
patent: 682979 (1995-11-01), None
patent: 2293968 (1976-08-01), None
patent: 52024131 (1977-02-01), None
patent: WO 0007706 (2000-02-01), None
References A-C and N-P were cited on the International Search Report.

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