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    • 61. 发明申请
    • METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER
    • 生产聚丙烯酸(盐) - 水吸收树脂粉末的方法
    • US20130102750A1
    • 2013-04-25
    • US13643682
    • 2011-04-27
    • Yusuke WatanabeKazushi ToriiKozo NogiKunihiko IshizakiReiko NakatsuruShigeru Sakamoto
    • Yusuke WatanabeKazushi ToriiKozo NogiKunihiko IshizakiReiko NakatsuruShigeru Sakamoto
    • C08J3/12C08F122/10
    • C08J3/12C08F6/008C08F122/105C08F220/06C08J3/122C08J3/245C08J2333/02C08L33/02
    • A water absorbent resin having less fine powder or powdery dust and a controlled particle size is provided, and the water absorption rate of the water absorbent resin is increased by a simple method at low cost, while maintaining or improving other physical properties such as liquid permeability. Disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin powder, which includes, in sequence, a step of polymerizing an aqueous solution of acrylic acid (salt)-type monomer; a step of gel-crushing a gel of a water-containing gel-like crosslinked polymer during polymerization or after polymerization; a step of drying the water-containing gel-like crosslinked polymer; and a step of pulverizing and classifying the dried polymer, wherein water absorbent resin fine particles having a particle size of less than 150 μm or a hydrated-particles thereof is added to a step prior to the drying step, and in the drying step, hot air drying is carried out with a hot air having an average flow velocity of 1.0 to 3.0 [m/s], a dew point of 30° C. to 100° C., and a hot air temperature of 140° C. to 235° C.
    • 提供具有较少粉末或粉末粉尘和受控粒度的吸水性树脂,并且通过简单的方法以低成本提高吸水性树脂的吸水率,同时保持或改善其它物理性质如液体渗透性 。 公开了一种聚丙烯酸(盐)型吸水性树脂粉末的制造方法,其中,依次包括使丙烯酸(盐)型单体的水溶液聚合的工序; 在聚合过程中或聚合后凝胶化凝胶状凝胶状交联聚合物凝胶的步骤; 干燥含水凝胶状交联聚合物的工序; 以及将干燥聚合物粉碎分级的步骤,其中将粒径小于150μm的吸水性树脂细颗粒或其水合物颗粒加入到干燥步骤之前的步骤中,并且在干燥步骤中,热 使用平均流速为1.0〜3.0 [m / s],露点为30℃〜100℃,热风温度为140℃〜235℃的热风进行空气干燥 C。
    • 66. 发明授权
    • Optical part holding unit
    • 光学部件保持单元
    • US07428110B2
    • 2008-09-23
    • US10589606
    • 2005-02-17
    • Tamotsu TamadaKazunori NomiShigeru Sakamoto
    • Tamotsu TamadaKazunori NomiShigeru Sakamoto
    • G02B7/02
    • G02B7/003
    • It is an object to provide an optical component holding unit whereby the positioning accuracy can be improved while reducing cost through facilitated assembling and ensuring reproducibility.The fitting between a cross-sectionally noncircular-shaped rectangular convex portion 8a and a rectangular hole and the fitting between a cross-sectionally circular-shaped circular convex portion 11a and a circular hole, which surround or form opening portions 22a and 22b for allowing passage of light, guide adjacent optical component holding units 35 to predetermined positions and couples the units detachably to each other for positioning in the three-dimensional direction, while the fitting between the rectangular convex portion 8a and the rectangular hole and the fitting between spring pins 13a and fitting holes restrain the adjacent optical component holding units 35 relatively in the rotation direction for positioning in the rotation direction.
    • 本发明的目的是提供一种光学部件保持单元,由此可以通过便于组装降低成本并确保再现性来提高定位精度。 横截面非圆形矩形凸部8a和矩形孔之间的配合以及围绕或形成开口部分22a和22的横截面圆形圆形凸部11a和圆形孔之间的配合 b,用于允许光通过,将相邻的光学部件保持单元35引导到预定位置,并且将单元可拆卸地彼此联接以在三维方向上定位,同时矩形凸部8a和矩形孔之间的配合以及 弹簧销13a和装配孔之间的配合在相对旋转方向上相对地限制相邻的光学部件保持单元35,以沿旋转方向定位。