公开(公告)号：US5196177A

公开(公告)日：1993-03-23

申请号：US641709

申请日：1991-01-15

申请人： Yoshitane Watanabe ,  Yoshiyuki Kashima ,  Kenji Tanimoto

发明人： Yoshitane Watanabe ,  Yoshiyuki Kashima ,  Kenji Tanimoto

IPC分类号： C01B33/149

CPC分类号： C01B33/149

摘要： A sol of flat silica particles (100-1000 nm in size) is produced by the following steps (a) to (d) from an acidic aqueous sol (S.sub.0) of negatively charged silica particles (7-30 nm in diameter) and an aqueous solution (B) of basic aluminum or zirconium salt.(a) mixing 100 parts by weight (as SiO.sub.2) of the sol (S.sub.0) with 0.2-10 parts by weight (as Al.sub.2 O.sub.3 or ZrO.sub.2) of the aqueous solution (B), and adjusting the resulting sol to pH 4-7, thereby yielding a sol (S.sub.1),(b) mixing 100 parts by weight (as SiO.sub.2) of the sol (S.sub.1) with 20-200 parts by weight (as SiO.sub.2) of the sol (S.sub.0), and adjusting the resulting sol to pH 4-7, thereby yielding a sol (S.sub.2),(c) mixing 100 parts by weight (as SiO.sub.2) of the sol (S.sub.2) with the aqueous solution (B) in an amount corresponding to 2-50% of the amount (as Al.sub.2 O.sub.3 or ZrO.sub.2 in parts by weight) added to 100 parts by weight (as SiO.sub.2) of the sol (S.sub.0) used in step (a), and adjusting the resulting sol to pH 4-7, thereby yielding a sol (S.sub.3), and(d) mixing 100 parts by weight (as SiO.sub.2) of the sol (S.sub.3) with the sol (S.sub.0) in an amount corresponding to 10-95% of the amount (as SiO.sub.2 in parts by weight) added to 100 parts by weight (as SiO.sub.2) of the sol (S.sub.1) in step (b), and adjusting the resulting sol to pH 4-7, thereby yielding a sol (S.sub.4).

公开(公告)号：US3952037A

公开(公告)日：1976-04-20

申请号：US363699

申请日：1973-05-24

申请人： Hiroshi Yoshitake ,  Kenji Tanimoto ,  Norio Kotera

发明人： Hiroshi Yoshitake ,  Kenji Tanimoto ,  Norio Kotera

IPC分类号： C07C2/66 ,  B01J31/22 ,  C07B31/00 ,  C07B37/00 ,  C07C1/00 ,  C07C2/68 ,  C07C4/18 ,  C07C5/27 ,  C07C6/12 ,  C07C15/00 ,  C07C15/02 ,  C07C27/00 ,  C07C37/00 ,  C07C37/11 ,  C07C45/00 ,  C07C49/76 ,  C07C51/00 ,  C07C63/36 ,  C07C67/00 ,  C07F5/06

CPC分类号： B01J31/2295 ,  C07C2/68 ,  C07C6/126 ,  B01J2231/4205 ,  B01J2531/31 ,  B01J31/26 ,  C07C2527/125

摘要： An aluminum halide complex of an aluminum halide, a hydrogen halide and an alkylbenzene is prepared by continuously feeding a gaseous hydrogen halide to a reaction zone comprising aluminum and an alkylbenzene and continuously taking the resulting aluminum halide complex out of the reaction zone, the byproduced hydrogen gas being taken out of the reaction zone, and aluminum and the alkylbenzene being fed continuously or intermittently to the reaction zone.

摘要翻译： 将卤化铝，卤化氢和烷基苯的卤化铝配合物通过将气态卤化氢连续供给到包含铝和烷基苯的反应区并连续地将所得的卤化铝配合物从反应区中除去，制备副产氢 气体从反应区域中取出，铝和烷基苯连续或间歇地进料到反应区。

公开(公告)号：US3937883A

公开(公告)日：1976-02-10

申请号：US492907

申请日：1974-07-26

申请人： Kenji Tanimoto

发明人： Kenji Tanimoto

IPC分类号： H04N1/36 ,  H04L7/00 ,  H02P5/16

CPC分类号： H04N1/36

摘要： For use with a phase synchronizing circuit which synchronizes an A-C motor at the receiving end of a communication link with one at the transmitting end thereof by repeatedly applying to the main coils of the receiving end motor, reduced frequency signals having a lower frequency than the rated frequency thereof to thereby reduce the phase deviation between the receiving and transmitting end motors, the improvement of a braking circuit for enhancing the speed and accuracy of the phase synchronizing circuit, the braking circuit including means for applying a direct-current voltage to the main coils of the receiving end motor prior to or in lieu of each of the reduced frequency signals.