Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-02-15
2005-02-15
Mulcahy, Peter D. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S262000, C427S214000, C427S215000, C427S220000
Reexamination Certificate
active
06855759
ABSTRACT:
Fine silica particles surface-treated with a silane and having primary particles having a particle diameter of from 0.01 to 5 μm, which fine silica particles fulfill the following conditions (i) and (ii), a process for their production and an organic resin composition containing such particles as a component are provided. (i) When an organic compound which is liquid at room temperature and has a dielectric constant of from 1 to 40 F/m and fine silica particles are mixed in a weight ratio of 5:1 and shaked, the fine silica particles disperse uniformly in the organic compound, and (ii) the quantity of primary particles remaining as primary particles when methanol is evaporated under heating by means of an evaporator from a dispersion prepared by dispersing the fine silica particles in methanol and thereafter the particles are held at a temperature of 100° C. for 2 hours, is in a percentage of at least 20% based on the quantity of primary particles originally present. The present fine silica particles are highly dispersible and low aggregative, and the organic resin composition containing them is useful for obtaining films having a good transparency and superior blocking resistance, slip properties and scratch resistance.
REFERENCES:
patent: 5013585 (1991-05-01), Shimizu et al.
patent: 5227504 (1993-07-01), Shinohara et al.
patent: 5651921 (1997-07-01), Kaijou
patent: 5771431 (1998-06-01), Mitsuhata et al.
patent: 6124369 (2000-09-01), Kudo et al.
patent: 6160067 (2000-12-01), Eriyama et al.
patent: 6166163 (2000-12-01), Kudo et al.
patent: 6521290 (2003-02-01), Kudo et al.
patent: 0 342 025 (1989-11-01), None
patent: 0 475 132 (1992-03-01), None
patent: 0 694 576 (1996-01-01), None
patent: 59-192589 (1984-10-01), None
patent: 60-224580 (1985-11-01), None
patent: 61-143176 (1986-06-01), None
patent: 62-178384 (1987-08-01), None
patent: 2-160613 (1990-06-01), None
patent: 3-197170 (1991-08-01), None
patent: 4-108606 (1992-04-01), None
patent: 5-17552 (1993-01-01), None
patent: 8-112974 (1996-05-01), None
patent: 8-231213 (1996-09-01), None
Asai Mitsuo
Asami Atsushi
Ichinohe Shoji
Kudo Muneo
Matsumura Kazuyuki
Mulcahy Peter D.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Shin-Etsu Chemical Co. , Ltd.
LandOfFree
Silica particles surface-treated with silane, process for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silica particles surface-treated with silane, process for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silica particles surface-treated with silane, process for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3504091