Anticorrosive coating compositions

Details Anticorrosive coating compositions Anticorrosive coating compositions

2005-11-16

2010-02-09

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

C106S014050, C106S014410, C106S462000, C524S123000, C524S414000

Reexamination Certificate

active

07658791

ABSTRACT:
It is an object of the present invention to provide an anticorrosive coating composition which uses a pollution-free (heavy metal-free) rust preventive pigment and exhibits anticorrosive performances equal or superior to those of lead compounds or chromic acid compounds even if the pigment is blended in various binder resins and also to provide an anticorrosive coating composition having excellent storage stability. The present invention relates to an anticorrosive coating composition comprising a binder resin and a pollution-free (heavy metal-free) rust preventive pigment containing a condensed calcium phosphate produced by baking a single substance or mixture of a calcium component and a phosphorous component in the following atomic ratio (Ca/P=m): 0.50<m<1.00, at 180 to 350° C.

REFERENCES:
patent: 6139616 (2000-10-01), Nagayama et al.
patent: 6548188 (2003-04-01), Yanase et al.
patent: 2007/0012220 (2007-01-01), Matsuda et al.
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Derwent Patent Abstract No. 1981-44851D, abstract of Japanese Patent Specification No. JP56-047458A (Apr. 1981).

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