Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1992-03-16
1993-11-30
Ryan, Patrick J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
524313, 430162, 428324, B32B 900
Patent
active
052663973
ABSTRACT:
The amorphous silica has a large apparent specific gravity despite of its BET specific surface area of 20 to 500 m.sup.2 /g, has an oil absorption amount of as small as 50 to 120 ml/100 g, has an agglomeration degree (D1/D0=DA) defined by the ratio of silica elementary particle diameter D0 to primary particle diameter D1 of from 10 to 50, and has nearly a spherical particulate structure which is quite different from that of the conventional gelation method silica (DA=.infin.). The amorphous silica-type filler exhibits excellent properties in regard to handling, processability, dispersion property and abrasion-resistant property and, when added as, for example, an anti-blocking agent, makes it possible to obtain resin films having transparency and scratch-resistant property without fisheyes or voids. Owing to the above properties, the amorphous silica that is used as a filler for the heat-sensitive recording papers suppresses ground fogging, improves the image concentration, makes it possible to apply a highly viscous coating solution since the filler dispersed in an aqueous solution creates very small viscosity, and imparts excellent abrasion resistance to the apparatus during the step of coating.
REFERENCES:
patent: 4382115 (1983-05-01), Takahashi
patent: 4885225 (1989-12-01), Heller et al.
patent: 5137955 (1992-08-01), Tsuchiya et al.
H. F. Mark et al, `Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Edn. vol. 20` 1978, Wiley & Sons, New York.
World Patents Index Latest Week 9005, Derwent Publ. Ltd, London GB; AN 84-066295/11 & JP-B-2 001 030 (Mizusawa KK) Jan. 10, 1990.
World Patents Index Latest Week 8849, Derwent Publ. Ltd, London GB; AN 83-38088K/16 & JP-B-63 058 170 (Sumimoto Chemical KK).
Abe Kiyoshi
Enomoto Kazumitsu
Kitsu Toshio
Ogawa Masahide
Takahashi Masao
Lee Cathy K.
Mizusawa Industrial Chemicals Ltd.
Ryan Patrick J.
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