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10 条记录 (耗时 0.039 秒)

    Purification of N-methyl-2-pyrrolidone
    3.
    发明授权
    Purification of N-methyl-2-pyrrolidone 失效
    N-甲基-2-吡咯烷酮的纯化

    公开(公告)号：US4895959A

    公开(公告)日：1990-01-23

    申请号：US363692

    申请日：1989-06-09

    申请人： Toshikazu Kato ,  Hiroshi Inoue ,  Kensuke Ogawara

    发明人： Toshikazu Kato ,  Hiroshi Inoue ,  Kensuke Ogawara

    IPC分类号： C07D207/26 ,  C07D207/267

    CPC分类号： C07D207/267

    摘要： A method for purifying N-methyl-2-pyrrolidone containing thiophenol and/or diphenyl disulfide is disclosed, comprising adding a polyhalogenated aromatic compound and an alkali metal hydroxide and/or an alkali metal carbonate to the N-methyl-2-pyrrolidone containing thiophenol and/or diphenyl disulfide, heat treating the mixture, and subjecting the mixture to separation by distillation. The thiophenol and/or diphenyl disulfide can be removed with ease and at low cost.

    摘要翻译： 公开了一种用于纯化含有苯硫酚和/或二苯基二硫化物的N-甲基-2-吡咯烷酮的方法，包括向含有N-甲基-2-吡咯烷酮的苯硫酚中加入多卤代芳族化合物和碱金属氢氧化物和/或碱金属碳酸盐 和/或二苯基二硫醚，热处理混合物，并通过蒸馏使混合物分离。 苯硫酚和/或二苯基二硫化物可以容易且以低成本除去。

    Process for producing poly (para-phenylene-sulfide)
    4.
    发明授权
    Process for producing poly (para-phenylene-sulfide) 失效
    生产聚（邻苯二甲酰亚胺）的方法

    公开(公告)号：US5151495A

    公开(公告)日：1992-09-29

    申请号：US609141

    申请日：1990-11-05

    申请人： Hiroshi Inoue ,  Toshikazu Kato ,  Kensuke Ogawara

    发明人： Hiroshi Inoue ,  Toshikazu Kato ,  Kensuke Ogawara

    IPC分类号： C08G75/02 ,  C08G75/06

    CPC分类号： C08G75/0254

    摘要： In a process for producing poly (p-phenylenesulfide) from an alkali metal sulfide and a p-dihalobenzene, a product polymer of an advantageously increased molecular weight is obtained by: providing a mixture comprising an alkali metal sulfide, a polar aprotic solvent, a sodium salt of an aliphatic carboxylic acid represented by the general formula: RCOONa (where R is an aliphatic hydrocarbon group having 1-20 carbon atoms), the content of water present in said mixture apart from any water of hydration or crystallization which may be contained in said sulfide and sodium salt being in the range of 5 to 20 moles per mole of said sulfide; thermally dehydrating said sulfide component in said mixture by removing at least part of the water from said mixture; and then contacting the resulting dehydrated mixture with a p-dihalobenzene.

    Process for producing poly (para-phenylene-sulfide)
    5.
    发明授权
    Process for producing poly (para-phenylene-sulfide) 失效
    聚（对 - 亚苯硫）的制备方法

    公开(公告)号：US5037953A

    公开(公告)日：1991-08-06

    申请号：US611382

    申请日：1990-11-13

    申请人： Hiroshi Inoue ,  Toshikazu Kato ,  Kensuke Ogawara

    发明人： Hiroshi Inoue ,  Toshikazu Kato ,  Kensuke Ogawara

    IPC分类号： C08G75/02

    CPC分类号： C08G75/0254

    摘要： In a process for producing poly (p-phenylenesulfide) from an alkali metal sulfide and a p-dihalobenzene, a product polymer of an advantageously increased molecular weight is obtained by: providing a mixture comprising an alkali metal sulfide, a polar aprotic solvent and a carboxylic acid sodium salt represented by the general formula: ZCOONa (wherein Z is a C.sub.6 -C.sub.20 aromatic hydrocarbon group or a substituted or unsubstituted pyridyl group ##STR1## where substituents R, which may be the same or different, represent each a C.sub.1 -C.sub.20 organic radical and n is an integer of from 0 to 4), the content of water present in said mixture apart from any water of hydration or crystallization which may be contained in said alkali metal sulfide and carboxylic acid sodium salt being at least 5 moles per mole of said alkali metal sulfide present; thermally dehydrating said alkali metal sulfide in said mixture by removing at least part of the water from said mixture; and then contacting the resulting dehydrated mixture with a p-dihalobenzene so as to produce the intended polymer.

    Polyphenylene sulfide resin composition
    8.
    发明授权
    Polyphenylene sulfide resin composition 失效
    聚苯硫醚树脂组合物

    公开(公告)号：US5258442A

    公开(公告)日：1993-11-02

    申请号：US943160

    申请日：1992-09-10

    申请人： Toshikazu Kato ,  Yasuhisa Ogita ,  Kensuke Ogawara

    发明人： Toshikazu Kato ,  Yasuhisa Ogita ,  Kensuke Ogawara

    IPC分类号： C08K3/26 ,  C08K9/06 ,  C08L81/00

    CPC分类号： C08K3/26 ,  C08K9/06

    摘要： There is disclosed a polyphenylene sulfide resin composition which comprises: (a) 100 parts by weight of a polyphenylene sulfide resin; and (b) from about 0.1 to about 10 parts by weight of finely divided calcium carbonate having a mean particle size of less than about 0.5 .mu.m and a BET surface area of greater than about 15 m.sup.2 /g. The resin composition is improved in that it exhibits no or little corrosive action on metals and that it shows excellent mechanical strength.

    摘要翻译： 公开了一种聚苯硫醚树脂组合物，其包含：（a）100重量份的聚苯硫醚树脂; 和（b）约0.1至约10重量份的平均粒度小于约0.5μm的细碎碳酸钙和大于约15m 2 / g的BET表面积。 树脂组合物的改进在于其对金属没有或几乎没有腐蚀作用，并且其表现出优异的机械强度。

    Process for producing polyphenylene sulfide ketone polymers
    9.
    发明授权
    Process for producing polyphenylene sulfide ketone polymers 失效
    生产聚苯乙烯酮酮聚合物的方法

    公开(公告)号：US5097003A

    公开(公告)日：1992-03-17

    申请号：US363573

    申请日：1989-06-07

    申请人： Satoshi Tomagou ,  Toshikazu Kato ,  Kensuke Ogawara

    发明人： Satoshi Tomagou ,  Toshikazu Kato ,  Kensuke Ogawara

    IPC分类号： C08G75/02

    CPC分类号： C08G75/024 ,  C08G75/0254 ,  C08G75/0295

    摘要： A process for producing a polyphenylene sulfide ketone polymer comprising reacting a dihalogen compound of the general formula ##STR1## wherein X and X', which may be the same or different, each represents a fluorine, chlorine, bromine or iodine atom, with an alkali metal sulfide in a polar solvent in such a way that the alkali metal sulfide is not deprived of free water or the water of hydration in the polar solvent before polymerization is started, and that the reaction is performed at a temperature in the range of from 80.degree. to 170.degree. C. in the initial period of polymerization until the percentage of residual unreacted dihalogen compound is reduced to 2% or below, with the subsequent reaction being performed at a temperature in the range of from 200.degree. to 345.degree. C.