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公开(公告)号:US4283564A
公开(公告)日:1981-08-11
申请号:US106211
申请日:1979-12-21
Applicant: Wolfgang Bernhagen , Hanswilhelm Bach , Eike Brundin , Wilhelm Gick , Helmut Springer , Adolf Hack
Inventor: Wolfgang Bernhagen , Hanswilhelm Bach , Eike Brundin , Wilhelm Gick , Helmut Springer , Adolf Hack
CPC classification number: C07C45/75
Abstract: A process for preparing methacrolein by catalytic reaction of propionaldehyde with formaldehyde is disclosed wherein the catalyst comprises a mixture of secondary amine and organic carboxylic acid with up to 8 carbon atoms.
Abstract translation: 公开了通过丙醛与甲醛的催化反应制备甲基丙烯醛的方法,其中催化剂包含仲胺和具有至多8个碳原子的有机羧酸的混合物。
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公开(公告)号:US4408975A
公开(公告)日:1983-10-11
申请号:US328939
申请日:1981-12-09
Applicant: Adolf Hack
Inventor: Adolf Hack
CPC classification number: B30B15/0082 , B30B11/08
Abstract: A tablet press (10) comprises a plurality of dies (17), a plurality of upper rams (18) and lower rams (19) each having a ram shaft (20, 21), a plurality of ram guides (22, 23), and support means (13, 14, 15) for supporting the dies and the ram guides, the arrangement being such that each ram (18, 19) is mounted for reciprocation in an associated one of said ram guides (22, 23) and each pair of one of said upper rams (18) and one of said lower rams (19) cooperates with a respective one of said dies (17); the press further comprising an upper intermediate wall (28) having a plurality of holes (34), one for the passage of each upper ram shaft (20), the upper intermediate wall (28) engaging at its edges with the support means (13) to form a dust barrier between the dies (17) and the upper ram guides (18), and a lower intermediate wall (28') having a plurality of holes (34), one for each lower ram shaft (21), the lower intermediate wall (28') engaging at its edges with the support means (14), to form a dust barrier between the dies and the lower ram guides.
Abstract translation: 压片机(10)包括多个模具(17),分别具有柱塞轴(20,21)的多个上部柱塞(18)和下部凸起(19),多个冲头引导件(22,23) ,以及用于支撑模具和柱塞引导件的支撑装置(13,14,15),该装置使得每个冲头(18,19)安装成用于在相关联的一个所述压头引导件(22,23)中往复运动,并且 每对所述上游杆(18)和所述下部杆(19)中的一个与相应的一个所述模具(17)配合; 压力机还包括具有多个孔(34)的上中间壁(28),一个用于每个上压头轴(20)通过的上中间壁(28),上中间壁(28)与其支撑装置(13) )以在模具(17)和上冲头引导件(18)之间形成防尘壁,以及具有多个孔(34)的下中间壁(28'),每个下冲杆轴(21)一个, 在其边缘处与支撑装置(14)接合的下中间壁(28'),以在模具和下冲杆引导件之间形成防尘壁。
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