B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
23/193, 6/212, 4
B41M 5/26 (2006.01) B41M 5/30 (2006.01) C09C 1/28 (2006.01) D21H 17/68 (2006.01) D21H 19/40 (2006.01)
Patent
CA 1336857
Disclosed herein is a filler for heat- sensitive recording paper which comprises amorphous silica obtained by reacting hydrosilicofluoric acid and/or an alkali salt thereof with an alkali (such as ammonia and dimethylamine). The filler has a solid acid strength (pka) of +6.8 to 3.3, an oil absorption value of 70 to 200 ml/100 g, a nitrogen adsorption specific surface area of 30 to 350 m2/g (by BET. method), and a water vapor adsorption specific surface area of 100 to 300 m2/g (by BET method).
586820
Kubo Masao
Nishiyama Takashi
Shiroishi Akihiro
Uno Ikuo
Nissan Chemical Industries Ltd.
Shionogi & Co. Ltd.
Smart & Biggar
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