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    • 1. 发明授权
    • Metal surfaces coated with aliphatic acids containing 12 carbon atoms or
more to eliminate polymer build-up on reactor walls during the
polymerization of water-soluble cationic polymers
    • 涂覆有12个碳原子或更多碳原子的脂肪酸的金属表面,以消除水溶性阳离子聚合物聚合过程中反应器壁上的聚合物积聚
    • US4165419A
    • 1979-08-21
    • US912804
    • 1978-06-05
    • Naoyuki SuzukiYoji WadaAkihisa FurunoIwao OhshimaYukio Shibuya
    • Naoyuki SuzukiYoji WadaAkihisa FurunoIwao OhshimaYukio Shibuya
    • C08F2/00C08F2/10C08F2/44C08F20/00C08F20/34C08F18/00
    • C08F20/34
    • A method for producing a water-soluble cationic polymer by polymerizing, in the presence of water, a high concentration of (a) at least one vinyl monomer represented by the following general formula (I)ch.sub.2 .dbd.cr.sub.1 coor.sub.2 n.sup..sym. r.sub.3 r.sub.4 r.sub.5 x.sup..crclbar. (i)wherein R.sub.1 is --H or --CH.sub.3 ; R.sub.2 is --CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH(OH)CH.sub.2 --; R.sub.3 and R.sub.4, which may be the same or different, each is --CH.sub.3 or --CH.sub.2 CH.sub.3 ; R.sub.5 is --C.sub.n H.sub.2n+1 where n is 0 or an integer of 1 to 4, --CH.sub.2 C.sub.6 H.sub.5, or --CH.sub.2 COOH; and X is Cl.sup.-, Br.sup.-, 1/2SO.sub.4.sup.-- or CH.sub.3 SO.sub.4.sup.-,or (b) a mixture of (i) at least one vinyl monomer represented by the general formula (I) and (ii) at least one other vinyl monomer copolymerizable therewith, wherein the vinyl monomer represented by the general formula (I) is present in the mixture in a predominant amount, and obtaining a polymer in a lump form, the improvement comprising performing the polymerization in a polymerization zone defined by a metal surface or surfaces, in which the metal surface(s) contacted during the polymerization have been coated with a layer of at least one of a higher aliphatic acid having 12 or more carbon atoms, an ammonium salt of a higher aliphatic acid having 12 or more carbon atoms and/or an alkali metal salt of a higher aliphatic acid having 12 or more carbon atoms.
    • 一种水溶性阳离子聚合物的制备方法,该水溶性阳离子聚合物通过在水存在下聚合高浓度(a)至少一种由以下通式(I)表示的乙烯基单体:CH2 = CR1COOR2N(+)R3R4R5X( - ) (I)其中R1是-H或-CH3; R2是-CH2CH2-或-CH2CH(OH)CH2-; R 3和R 4可以相同或不同,各自为-CH 3或-CH 2 CH 3; R5是-CnH2n + 1,其中n是0或1-4的整数,-CH2C6H5或-CH2COOH; 和(b)由通式(I)表示的至少一种乙烯基单体和(ⅱ)至少一种其它乙烯基单体的混合物, 可共聚的单体,其中由通式(I)表示的乙烯基单体以主要的量存在于混合物中,并且获得块状聚合物,其改进包括在由金属表面限定的聚合区中进行聚合 或其中金属表面在聚合过程中接触的表面已经涂覆有具有12个或更多个碳原子的高级脂族酸中的至少一种的层,具有12个或更多个碳的高级脂族酸的铵盐 原子和/或具有12个或更多个碳原子的高级脂族酸的碱金属盐。
    • 5. 发明授权
    • Device for measuring the length of linear movement
    • 用于测量直线运动长度的装置
    • US06609309B2
    • 2003-08-26
    • US09940720
    • 2001-08-29
    • Yukio Shibuya
    • Yukio Shibuya
    • G01B300
    • G01D5/165
    • A device for measuring the length of a linear movement using a rotary potentiometer improves measuring accuracy, measurement deterioration for a long-period usage and miniaturization. The device in includes a regular winding mechanism, forming a single layer of wire, constructed of a screw feeding mechanism stored in a housing to axially move the drum when rotating, and the d m converts a linear displacement into a rotational displacement with the wire. Moreover, the wire on the drum is located so as to have a constant radius from the center of rotation. The screw feeding mechanism is constructed in such a manner that the drum is axially moved by the distance corresponding to one pitch of the regularly wound wire in every revolution of the drum, so that winding and unwinding of the wire can be performed at the same position of the housing all the time, thereby avoiding disarrangement of wound the drum causing a deterioration in an accuracy.
    • 使用旋转电位计测量线性运动的长度的装置提高了测量精度,长时间使用的测量恶化和小型化。 该装置包括一个规则的绕线机构,形成单层电线,由存放在壳体中的螺旋进给机构构成,以便在旋转时使滚筒轴向移动,并且d m将线性位移转换成与导线的旋转位移。 此外,滚筒上的导线被定位成具有与旋转中心恒定的半径。 螺杆进给机构构造成使得滚筒在滚筒的每转中轴向移动相当于规则卷绕的线的一个间距的距离,使得线的卷绕和展开可以在相同位置执行 ,从而避免了滚筒上的卷绕不均匀性导致精度的降低。