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    • 41. 发明专利
    • COAGULATION OF POLYMER LATEX
    • JPS6026006A
    • 1985-02-08
    • JP13446483
    • 1983-07-25
    • MITSUBISHI RAYON CO
    • SUGIMORI TERUHIKOTAJIRI TAKAYUKIHIRONAKA AKIOHABARA HIDEAKI
    • C08F6/00C08C1/00C08C1/15C08F6/22
    • PURPOSE:To achieve energy preservation and upgrading of product properties by process rationalization, by recirculating a filtrate obtained form solid/liquid separation to a pH adjustment tank for reuse. CONSTITUTION:A polymer latex (e.g., a latex obtained by emulsion-polymerizing an ethylenic monomer) is fed to a coagulation tank 1, where it is treated with a coagulating agent (e.g., sulfuric acid). The formed slurry is fed to a pH adjustment tank 2, where its pH is adjusted with a pH adjusting agent (e.g., sodium hydroxide). This slurry is then fed to a solidification tank 3, where it is treated at a predetermined solidification temperature, and then fed to a solid/liquid separation tank 4. The filtrate obtained here is recirculated through a line 5 to the pH adjustment tank 2. At this time, an alkaline substance is supplied from an alkali reservoir 6. By the recirculation and reuse of the filtrate, the process can be rationalized and at the same time, energy necessary for solid/liquid separation or the like, can reduced. In addition, it is possible to obtain a product property which is better than that obtained when an alkaline substance is added directly to the pH adjustment tank.
    • 43. 发明专利
    • Method for coagulating polymer latex
    • 凝聚聚合物的方法
    • JPS59182801A
    • 1984-10-17
    • JP5770583
    • 1983-03-31
    • Mitsubishi Rayon Co Ltd
    • SUGIMORI TERUHIKOTAJIRI TAKAYUKIHIRONAKA AKIOHABARA HIDEAKI
    • C08F6/00C08F6/22
    • PURPOSE: To obtain a polymer granular or particulate material having excellent powder characteristics, by coagulating the titled latex with a coagulating nozzle, capable of extruding a coagulating solution through the central part of a base board, and obtained by mounting capillaries on the base board under specific conditions.
      CONSTITUTION: A nozzle for coagulating a latex, having a structure capable of extruding a coagulating solution through the central part of a base board 2, and obtained by mounting plural capillaries 1 on the base board 2 to give ≥1mm mutual gap between the capillaries 1 and ≥3mm protrusion length of the capillaries 1 on the base board 2 is usually dipped in a coagulation bath, and a polymer latex is introduced into a holder 3 of the above-mentioned nozzle, extruded through the tips of the capillaries 1 at the same time to come into contact with the coagulating solution around the nozzle and extruded through the central part of the base board 2 and coagulated.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:为了获得具有优异粉末特性的聚合物颗粒或颗粒材料,通过凝结喷嘴的标题胶乳凝结,能够通过基板的中心部分挤出凝固溶液,并将毛细管安装在基板上 具体条件。 构成:用于凝结胶乳的喷嘴,其具有能够通过基板2的中心部分挤出凝结液的结构,并且通过将多个毛细管1安装在基板2上而得到= 1mm。 毛细管1和> = 3mm之间的相互间隙。 通常将基板2上的毛细管1的突出长度浸入凝固浴中,并将聚合物胶乳引入到上述喷嘴的保持器3中,同时通过毛细管1的尖端挤出 与喷嘴周围的凝固溶液接触并通过基板2的中心部分挤出并凝结。
    • 44. 发明专利
    • Production of thermoplastic resin
    • 生产热塑性树脂
    • JPS5924709A
    • 1984-02-08
    • JP13411582
    • 1982-07-30
    • Mitsubishi Rayon Co Ltd
    • SUGIMORI TERUHIKOTAJIRI TAKAYUKI
    • C08F6/00C08F6/22C08F279/00C08F279/04
    • PURPOSE: To obtain the titled resin excellent in blendability and free from a need of washing operation, by coagulating an MBS resin latex at a temperature in a specified range to form a coagulated slurry, and adding thereto an alkaline substance at a temperature in a specified range to adjust its pH to a specified value.
      CONSTITUTION: A latex of a thermoplastic resin is formed which contains a monomer component at least 90wt% of which consisting of butadiene, methyl methacrylate, and styrene. Then, this latex is brought into contact with a coagulating solution (an example of a coagulant being sulfuric acid) at a temperature in the range of 0W80°C to form a coagulated slurry and then an alkaline substance (e.g., sodium hydroxide) is added to the obtained slurry so that the pH of the slurry is higher by at least 0.1 than the initial pH, and that the pH of the entire mixture is adjusted to 7.0 or below. Then, the desired thermoplastic resin is obtained by solidifying the coagulated particles of the coagulated slurry by heating.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:为了获得混合性优异且不需要洗涤操作的标题树脂,通过在特定范围的温度下使MBS树脂胶乳凝固形成凝固的浆料,并在特定温度下加入碱性物质 范围将其pH值调整到指定值。 构成:形成热塑性树脂的胶乳,其包含至少90重量%的由丁二烯,甲基丙烯酸甲酯和苯乙烯组成的单体成分。 然后,使该胶乳在0-80℃的温度下与凝固溶液(作为硫酸的凝结剂的实例)接触以形成凝结的浆料,然后加入碱性物质(例如氢氧化钠 )添加到所获得的浆料中,使得浆料的pH比初始pH高至少0.1,并且将整个混合物的pH调节至7.0以下。 然后,通过加热固化凝固浆料的凝固颗粒,获得所需的热塑性树脂。
    • 45. 发明专利
    • Production of impact-resistant resin by continuous emulsion polymerization
    • 通过连续乳化聚合生产耐冲击树脂
    • JPS5721411A
    • 1982-02-04
    • JP9591180
    • 1980-07-14
    • Mitsubishi Rayon Co Ltd
    • SUGIMORI TERUHIKOTAJIRI TAKAYUKI
    • C08F4/00C08F2/22C08F2/44C08F4/04C08F4/28C08F4/32C08F279/02C08F291/00
    • PURPOSE: To produce title polymer having excellent impact resistance and appearance, by emulsion-polymerizing a monomer in the presence of a rubbery polymer with the aid of a combination of an azo compound type initiator and a peroxide type initiator.
      CONSTITUTION: A rubbery polymer, e.g., polybutadiene, and one or more monomers, e.g., styrene or acrylonitrile, are dispersed in water in an amount of 80W 500pts.wt. per 100pts.wt. solids of the latex after polymerization, with the aid of an emulsifier, and emulsion-polymerized in the presence of an azo compound type initiator, e.g., 2,2'-azobiaisobutyronitrile, and a peroxide type initiator, e.g., 1- hydroxybutyl n-butyl peroxide.
      EFFECT: It is possible to control the grafting ratio and the degree of polymerization of the polymer to be produced at desired values, by properly selecting the ratio of the azo compound type initiator to the peroxide type initiator.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:为了制备具有优异的耐冲击性和外观的标题聚合物,通过在偶联化合物型引发剂和过氧化物型引发剂的组合的帮助下,在橡胶状聚合物存在下使单体乳化聚合。 构成:橡胶状聚合物,例如聚丁二烯和一种或多种单体,例如苯乙烯或丙烯腈,以80-500pts.wt。的量分散在水中。 每100pts.wt 聚合后的胶乳的固体,借助于乳化剂,并在偶氮化合物型引发剂例如2,2'-偶氮二异丁腈和过氧化物型引发剂(例如1-羟基丁基)的存在下进行乳液聚合, 丁基过氧化物。 效果:通过适当选择偶氮化合物型引发剂与过氧化物型引发剂的比例,可以控制所需聚合物的接枝率和聚合度。