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    • 8. 发明授权
    • Method for production of esterified product and apparatus therefor
    • 酯化产品的生产方法及其设备
    • US06716896B2
    • 2004-04-06
    • US10041372
    • 2002-01-08
    • Tsuyoshi HirataHiromichi TanakaTsutomu Yuasa
    • Tsuyoshi HirataHiromichi TanakaTsutomu Yuasa
    • C08K300
    • C04B24/2647C04B24/2641C04B24/2688C04B24/32C04B2103/408C07C67/08C08F20/28C08G65/3322C07C69/54
    • A method for the production of an esterified product which can prevent the occurrence of a gel-like substance during the separation and removal of the water formed by the reaction in the esterification reaction or during the expulsion of a dehydrating solvent by distillation after the esterification reaction by causing an antigelling agent to act on the distillate and consequently permits efficient production of the esterified product of high quality, and an apparatus therefor are to be provided. To be specific, a method for the production of an esterified product of this invention relates to a method for the production of an esterified product by the esterification reaction of an alcohol represented by the following formula (1): R1O(R2O)nH  (1) wherein R1 represents a hydrocarbon group of 1 to 30 carbon atoms, R2O represents an oxyalkylene group of 2 to 18 carbon atoms, providing that the repeating units, R2O, may be the same or different and that when the R2O's are in the form of a mixture of two or more species, the repeating units, R2O, may be added either in a block form or in a random form, and n represents an average addition mol number of oxyalkylene groups and is in the range of 0 to 300, with (meth)acrylic acid, wherein said method comprises acting an antigelling agent on a distillate.
    • 一种酯化产物的制备方法,其可以防止在酯化反应中分离和除去由酯化反应中的反应形成的水或在酯化反应后通过蒸馏排出脱水溶剂时发生凝胶状物质 通过使抗凝胶剂作用于馏出物,从而能够有效地生产高质量的酯化产物,并提供其设备。 具体而言,本发明的酯化产物的制造方法涉及通过下述式(1)表示的醇的酯化反应生产酯化产物的方法:其中R 1表示 1至30个碳原子的烃基,R 2 O表示2至18个碳原子的氧化烯基团,条件是重复单元R 2 O可以相同或不同,并且当R 2 > O是两种或更多种的混合物的形式,重复单元R 2 O可以以嵌段形式或无规形式加入,n表示氧化烯基的平均加成摩尔数 并且与(甲基)丙烯酸在0至300的范围内,其中所述方法包括在馏出物上起抗凝胶剂的作用。
    • 10. 发明授权
    • Cement composition
    • 水泥组成
    • US5925184A
    • 1999-07-20
    • US803759
    • 1997-02-21
    • Tsuyoshi HirataTsutomu YuasaToru UnoKoichiro NagareHideyuki TaharaShogo Iwai
    • Tsuyoshi HirataTsutomu YuasaToru UnoKoichiro NagareHideyuki TaharaShogo Iwai
    • C04B24/26C04B24/32C04B28/02C04B24/04
    • C04B28/02C04B24/2647C04B24/2694C04B2103/308
    • A cement composition excelling in the slump retaining property which comprises at least cement admixture comprising as a main ingredient thereof (I) a copolymer (A) of short-chain polyalkylene glycol (meth)acrylate (a), a long-chain polyalkylene glycol (meth)acrylate (b), a carboxylic acid monomer (c), and a monomer copolymerizable with the monomers mentioned above or a salt of the copolymer (B), (II) a copolymer (A.sub.1) of the monomers (a), (c), and (d) mentioned above or a salt thereof, (III) a mixture of a copolymer (A.sub.1) of the monomers (a), (c), and (d) mentioned above or a salt (B.sub.1) of thereof with a known cement admixture, or (IV) a polycarboxylic acid based polymer (A.sub.3) manifesting to a calcium sulfoaluminate based expansive additive an adsorption ratio of not less than 90% in 5 minutes at room temperature when added in an amount of 0.1% by weight as solids or a salt (B.sub.3) thereof, or (V) a mixture of said polycarboxylic acid polymer with a known cement dispersant; cement; and water.
    • 坍落度保持性优异的水泥组合物至少包括水泥混合物,其包含主要成分(I)短链聚亚烷基二醇(甲基)丙烯酸酯(a)的共聚物(A),长链聚亚烷基二醇( 甲基丙烯酸酯(b),羧酸单体(c)和可与上述单体共聚的单体或共聚物(B),(II)的单体(a)的共聚物(A1) c)和(d)或其盐,(III)上述单体(a),(c)和(d)的共聚物(A1)或其盐(B1)的混合物 使用已知的水泥混合物,或(IV)表示基于硫铝酸钙的膨胀性添加剂的多元羧酸系聚合物(A3),当以0.1%的量加入时,在室温下5分钟内吸附率不小于90% 重量为固体或其盐(B3),或(V)所述多元羧酸聚合物与已知的水泥分散剂的混合物; 水泥; 和水。