Stock material or miscellaneous articles – Composite – Of silicon containing
Reexamination Certificate
2011-08-02
2011-08-02
Kruer, Kevin R. (Department: 1787)
Stock material or miscellaneous articles
Composite
Of silicon containing
C106S014050, C106S014110, C106S014210, C106S014120, C106S014140, C252S388000, C252S389100, C252S389300, C252S389540, C252S389610
Reexamination Certificate
active
07989075
ABSTRACT:
Provided is a chromium-free, low-temperature curable, metal-surface treatment composition comprising 5 to 30 parts by weight of a silane compound having an epoxy group and a silane compound having an amino group or a hydrolytic condensate thereof; 0.1 to 5 parts by weight of a vanadium compound; 0.1 to 5 parts by weight of a magnesium compound; 1 to 10 parts by weight of organic/inorganic acids; 0.05 to 2 parts by weight of a crosslinking accelerating and coupling agent; 0.01 to 1 part by weight of an antifoaming agent; 1 to 2 parts by weight of a wetting agent; and the balance of water and ethanol, based on 100 parts by weight of the total solution. In addition, a steel sheet coated with the above-described metal-surface treatment composition is low-temperature curable and provides anticorrosiveness while containing no chromium components.
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Jin Yeong-Sool
Keom Sung-Mun
Kim Jin-Tae
Daehan Parkerizing Co., Ltd.
Kruer Kevin R.
POSCO
The Webb Law Firm
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