Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2005-06-23
2009-08-25
Green, Anthony J (Department: 1793)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C106S445000, C106S446000, C427S219000, C427S220000, C427S221000, C428S404000, C428S405000, C524S081000, C524S186000, C524S261000, C524S379000, C524S497000
Reexamination Certificate
active
07579391
ABSTRACT:
The invention provides titanium dioxide pigments for plastics resin compositions which are excellent in dispersibility, light resistance, and weather resistance and little cause surface imperfection. In particular, the invention provides a titanium dioxide pigment suitable for general-purpose plastics resin compositions which can attain excellent dispersion and lacing resistance even when blended in a high concentration; a titanium dioxide pigment suitable for engineering plastics resin compositions which can attain dispersion properties, silver streaking resistance, inhibition of reduction in molecular weight, and thermal discoloration resistance at high levels; a process for the production of the pigments; and resin compositions containing the pigments. A titanium dioxide pigment for plastics resin compositions, characterized in that each titanium dioxide particle has a dense hydrous silica coat covering its surface and an organic compound coat formed on the silica coat not through an interlayer.
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Akamatsu Toshihiko
Iriyama Keisuke
Shimojoh Masaki
Takahashi Hideo
Green Anthony J
Ishihara Sangyo Kaisha Ltd.
Manelli Denison & Selter PLLC
White Paul E.
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