Water-absorbing polymer particle and method for producing water-absorbing polymer particle
    1.
    发明专利
    Water-absorbing polymer particle and method for producing water-absorbing polymer particle 审中-公开
    吸水聚合物颗粒和生产吸水聚合物颗粒的方法

    公开(公告)号:JP2010053222A

    公开(公告)日:2010-03-11

    申请号:JP2008218307

    申请日:2008-08-27

    Abstract: PROBLEM TO BE SOLVED: To provide water-absorbing polymer particles little in toxicity. SOLUTION: There is provided a method for producing the water-absorbing polymer particles, comprising copolymerizing a vinyl ester-based compound with an ethylene-based unsaturated carboxylate and then saponifying the obtained copolymer, characterized by using a water-alcohol mixture solvent containing the water in an amount of ≤30 mass% as a saponification solvent on the saponification reaction, and performing the saponification reaction using an alkali in an amount of ≥1.5 mol per mole of the monomers for the copolymer as the saponification alkali. The obtained water-absorbing polymer particles have a physiological salt solution absorption of ≤40 g/g. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供吸水性聚合物颗粒的毒性很小。 提供一种吸水性聚合物粒子的制造方法,其特征在于,使乙烯基酯系化合物与乙烯系不饱和羧酸酯共聚,然后皂化所得共聚物,其特征在于使用水 - 醇混合溶剂 在皂化反应中含有≤30质量%的水作为皂化溶剂,并且使用每摩尔共聚物单体≥1.5摩尔的碱作为皂化碱进行皂化反应。 得到的吸水性聚合物粒子的生理盐溶液吸收率为≤40g/ g。 版权所有(C)2010,JPO&INPIT

    8.
    发明专利
    失效

    公开(公告)号:JPH05241212A

    公开(公告)日:1993-09-21

    申请号:JP1929592

    申请日:1992-02-05

    Abstract: PURPOSE:To enhance a nonlinear optical effect and to improve moldability by constituting the above material with specific structural units. CONSTITUTION:This org. nonlinear optical material is a polymer which consists of the structural units expressed by formulas I and II and in which the unit I is 5 to 100mol%, the unit II is 0 to 95mol% and the mol. wt. is 10,000 to 2,000,000. In the formula, m denotes an integer from 1 to 10; n denotes 0, 1; X denotes formula III; A denotes-NO2,-CN,-CF3 etc,; Y denotes a hydrogen atom, halogen atom,-NO2,-CN,-CF3 etc.; p denotes an integer from 1 to 10. This polymer is synthesized by, for example, three stages; a polymerizing stage, hydrolyzing stage and photofunctional group introducing stage. The org. nonlinear optical material is obtd. by residsolving the resulted copolymer in an org. solvent, such as sulfolane, adding a base, such as pyridine triethylamine, to the soln. and heating the soln. together with the nonlinear optical compd. to be introduced. The nonlinear optical compd. to be introduced includes, for example, P-nitroaniline and its deriv., 4-methyl sulfone biphenyl deriv., etc.

    Plastic lens material
    10.
    发明专利
    Plastic lens material 失效
    塑料镜片材料

    公开(公告)号:JPS61115915A

    公开(公告)日:1986-06-03

    申请号:JP23776984

    申请日:1984-11-12

    Abstract: PURPOSE: The titled material having a high transmittance to visible light, a high refractive index and being excellent in scratch resistance, solvent resistance, etc., prepared by copolymerizing a biphenyl (meth)acrylate monomer with a monomer containing a plurality of (meth)allyl groups.
    CONSTITUTION: A plastic lens material is prepared by copolymerizing a monomer of formula I (wherein R
    1 is H or CH
    3 , R
    2 is a group of formula II and n is 0W2), e.g., o-biphenyl (meth)acrylate, with a monomer containing at least two (meth)allyl groups in the molecule (e.g., diethylene glycol bisallyl carbonate). This lens material has a visible light transmittance ≥88% and a refractive index as high as 1.55 or above and can well meet various properties necessary for a spectacle lens, such as scratch resistance, solvent resistance and grindability with diamond wheels.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的:通过使(甲基)丙烯酸联苯酯单体与含有多个(甲基)丙烯酸酯的单体共聚而制备的,对可见光透射率高,折射率高,耐刮擦性优异,耐溶剂性优异的标题材料, 烯丙基。 构成:通过使式I的单体(其中R 1是H或CH 3,R 2是式II的基团,n是0-2),例如,邻 - (甲基)丙烯酸邻苯二甲酸酯共聚合制备塑料透镜材料, 在分子中含有至少两个(甲基)烯丙基的单体(例如二甘醇双烯丙基碳酸酯)。 该透镜材料的可见光透射率> 88%,折射率高达1.55以上,可以很好地满足眼镜镜片的各种特性,例如耐刮擦性,耐溶剂性和金刚石砂轮的研磨性。

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