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    • 4. 发明授权
    • Unsaturated carboxylic acid polymer, biodegradable builder, and detergent composition
    • 不饱和羧酸聚合物,可生物降解的助洗剂和洗涤剂组合物
    • US06310030B1
    • 2001-10-30
    • US09622917
    • 2000-09-07
    • Shigeru MatsuoYoshikatsu Seino
    • Shigeru MatsuoYoshikatsu Seino
    • C11D337
    • C08F22/02C08F20/04C11D3/3757
    • Provided are an unsaturated carboxylic acid polymer having a degree of calcium-sequestering ability of at least 150 mg CaCO3/g, a degree of 28-day biodegradability of at least 40%, and a number-average molecular weight of from 500 to 1,000,000; a process for producing the unsaturated carboxylic acid polymer by copolymerizing an unsaturated carboxylic acid or its salt with a quinone in the presence of a polymerization initiator; a builder comprising the polymer; a detergent composition comprising the builder and a surfactant; and a dispersant comprising the polymer. The polymer has good calcium ion-sequestering ability and good biodegradability, and is highly useful as a material for builders.
    • 提供具有至少150mg CaCO 3 / g,28天生物降解度至少40%,数均分子量为500至1,000,000的钙螯合能力程度的不饱和羧酸聚合物; 通过在聚合引发剂的存在下使不饱和羧酸或其盐与醌进行共聚来制造不饱和羧酸聚合物的方法; 包含所述聚合物的助洗剂; 包含助洗剂和表面活性剂的洗涤剂组合物; 和包含聚合物的分散剂。 该聚合物具有良好的钙离子螯合能力和良好的生物降解性,并且作为助洗剂的材料非常有用。
    • 5. 发明授权
    • Process for producing polycarbonate
    • 生产聚碳酸酯的方法
    • US5922826A
    • 1999-07-13
    • US875402
    • 1997-07-31
    • Shigeki KuzeKenji TanakaKouichi SugaYoshikatsu SeinoAkihiro ShishikuraNoriyuki Kunishi
    • Shigeki KuzeKenji TanakaKouichi SugaYoshikatsu SeinoAkihiro ShishikuraNoriyuki Kunishi
    • C08G64/22C08G64/24C08G64/30C08G64/00
    • C08G64/307C08G64/22C08G64/24
    • There are disclosed a process for producing a polycarbonate through transesterification which comprises using, as a polymerization catalyst, (1) a combination of a nitrogen-containing organic basic compound and a quaternary phosphonium salt, (2) a tetraarylphosphonium salt having a specific chemical structure, or (3) a quaternary phosphonium salt having a specific chemical structure and containing a branched alkyl group; and a process for producing a polycarbonate which comprises the steps of preparing a polycarbonate prepoplymer by preliminary polymerization and thereafter polymerizing the resultant prepolymer in a state of a solid phase by the use of a quaternary phosphonium salt as a catalyst.By using any of these processes it is made possible to produce, in extremely high efficiency, a high-quality polycarbonate being excellent in appearance, heat resistance, hydrolysis resistance and the like.
    • PCT No.PCT / JP96 / 00178 Sec。 371日期1997年7月31日 102(e)日期1997年7月31日PCT提交1996年1月31日PCT公布。 第WO96 / 23832号公报 日期:1996年8月8日公开了通过酯交换反应生产聚碳酸酯的方法,该方法包括使用(1)含氮有机碱性化合物和季鏻盐的组合作为聚合催化剂,(2)四芳基鏻盐 具有特定的化学结构,或(3)具有特定化学结构并含有支链烷基的季鏻盐; 和聚碳酸酯的制造方法,其特征在于,包括以下步骤:通过预聚合制备聚碳酸酯预聚物,然后通过使用季鏻盐作为催化剂,使所得预聚物以固相的状态聚合。 通过使用任何这些方法,可以以极高的效率制造出外观,耐热性,耐水解性等优异的高品质聚碳酸酯。