Process for producing plasticized vinylidene chloride-vinyl chloride
copolymer
    3.
    发明授权
    Process for producing plasticized vinylidene chloride-vinyl chloride copolymer 失效
    生产塑化偏二氯乙烯 - 氯乙烯共聚物的方法

    公开(公告)号:US4251405A

    公开(公告)日:1981-02-17

    申请号:US33984

    申请日:1979-04-27

    CPC分类号: C08F214/08

    摘要: A plasticized vinylidene chloride-vinyl chloride copolymer is produced by copolymerizing 65 to 95 wt. % of vinylidene chloride and 35 to 5 wt. % of vinyl chloride or a mixture of vinyl chloride as a main component and a comonomer wherein 0.5 to 10.0 wt. parts of a plasticizer being soluble in said monomer mixture is added to 100 wt. parts of said monomer mixture and said monomer mixture is copolymerized by a suspension polymerization in the presence of an oil soluble radical initiator and a macromolecular suspending agent in water whereby a blending step can be eliminated.

    摘要翻译: 通过将65〜95重量份的共聚物制造塑化的偏二氯乙烯 - 氯乙烯共聚物。 %偏二氯乙烯和35〜5wt。 %的氯乙烯或氯乙烯作为主要成分的混合物和共聚单体,其中0.5至10.0wt。 将可溶于所述单体混合物的增塑剂的部分加入到100重量% 所述单体混合物和所述单体混合物的部分通过在油溶性自由基引发剂和大分子悬浮剂存在下在水中的悬浮聚合共聚合,由此可以除去共混步骤。

    Fine particles of polyvinyl chloride and process for producing the same
    4.
    发明授权
    Fine particles of polyvinyl chloride and process for producing the same 失效
    聚氯乙烯微粒及其制备方法

    公开(公告)号:US4501870A

    公开(公告)日:1985-02-26

    申请号:US614223

    申请日:1984-05-24

    摘要: Fine particles of polyvinyl chloride produced by bulk polymerization which comprise substantially discrete spherical particles with particle sizes of 0.2 to 2 microns, a plastisol prepared by adding 80 parts by weight of dioctylphthalate to 100 parts by weight of said particles having a viscosity of 50,000 centipoise or less (measured by a B-type viscometer, No. 4 rotor, 12 rpm, 25.degree. C.) and a process for producing the same which comprises subjecting vinyl chloride to bulk polymerization in the presence of a dispersing stabilizer under gentle stirring without causing sedimentation or agglomeration of the polymer particles formed, wherein polymerization is terminated at a polymerization yield of 5 to 30%.

    摘要翻译: 通过本体聚合制造的聚氯乙烯细颗粒,其包含基本上离散的粒径为0.2至2微米的球形颗粒,通过向100重量份所述粘度为50,000厘泊的颗粒中加入80重量份邻苯二甲酸二辛酯制备的增塑溶胶或 较少(通过B型粘度计,4号转子,12rpm,25℃测定)及其制造方法,其包括在温和搅拌下在分散稳定剂存在下使氯乙烯进行本体聚合而不引起 所形成的聚合物颗粒的沉降或凝聚,其中以聚合产率5至30%终止聚合。

    Suspension polymerization of haloethylene compound
    5.
    发明授权
    Suspension polymerization of haloethylene compound 失效
    卤代乙烯化合物的悬浮聚合

    公开(公告)号:US4380614A

    公开(公告)日:1983-04-19

    申请号:US222924

    申请日:1981-01-06

    CPC分类号: C08F2/004 C08F2/005

    摘要: A suspension polymerization of a haloethylene compound or a mixture of a haloethylene compound and a comonomer thereof is carried out in an aqueous medium containing a suspending agent and an oil soluble catalyst, by coating or incorporating at least one of a water soluble or organic solvent soluble lignin derivative.

    摘要翻译: 卤代乙烯化合物或其卤代乙烯化合物及其共聚单体的混合物的悬浮聚合在含有悬浮剂和油溶性催化剂的水性介质中进行,通过涂布或引入水溶性或有机溶剂中的至少一种溶解 木质素衍生物。

    Vinylidene fluoride polymer and method of making same
    6.
    发明授权
    Vinylidene fluoride polymer and method of making same 失效
    偏二氟乙烯聚合物及其制备方法

    公开(公告)号:US5344904A

    公开(公告)日:1994-09-06

    申请号:US111541

    申请日:1993-08-25

    IPC分类号: C08F214/22 C08F14/22

    CPC分类号: C08F214/22

    摘要: This invention provides PVDF having such crystallization properties as to produce small spherulite sizes without sacrifices to properties, processability, purity, etc., and a suspension polymerization method to obtain the same.The PVDF obtained by this invention comprises the monomer unit content of 99.5-96 wt. % of vinylidene fluoride, and the monomer unit content of 0.5-4 wt. % of comonomers selected from hexafluoropropylene and/or tetrafluoroethylene, and has a logarithmic viscosity of 0.9-1.3 dl/g, and a molecular-weight distribution, as expressed in the ratio (Mw/Mn) of weight-average molecular weight and number-average molecular weight, of 2.2-2.8.In order to manufacture the PVDF of this invention, a mixture of vinylidene fluoride monomers containing 1-5 wt. % of monomers selected from hexafluoropropylene and/or tetrafluoroethylene is suspension-polymerized in an aqueous medium, using an oil-soluble initiator so that the logarithmic viscosity [.eta..sub.1 ] is kept at 1.3-1.9 dl/g until the polymerization conversion rate of vinylidene fluoride monomers becomes 10-50%, and the polymerization is continued by adding a chain transfer agent at that polymerization conversion rate so that the logarithmic viscosity [.eta..sub.2 ] of the eventually obtained polymers becomes 0.3-0.7 dl/g lower than [.eta..sub.1 ], and yet remains in the range of 0.9-1.3 dl/g.

    摘要翻译: 本发明提供了具有这样的结晶性能的PVDF,即在不牺牲性能,加工性,纯度等的情况下产生小球晶尺寸,以及获得其的悬浮聚合方法。 通过本发明获得的PVDF包含单体单元含量为99.5-96wt。 %偏二氟乙烯,单体单元含量为0.5-4wt。 %的选自六氟丙烯和/或四氟乙烯的共聚单体,其对数粘度为0.9-1.3dl / g,分子量分布以重均分子量(Mw / Mn)与数均分子量 平均分子量为2.2-2.8。 为了制造本发明的PVDF,将含有1-5重量% 选择六氟丙烯和/或四氟乙烯的单体的%,使用油溶性引发剂在水性介质中悬浮聚合,使得对数粘度η保持在1.3-1.9dl / g,直到亚乙烯基的聚合转化率 氟化物单体变为10-50%,并且通过以该聚合转化率加入链转移剂继续聚合,使得最终得到的聚合物的对数粘度[η]为比0.3 ],但仍保持在0.9-1.3dl / g的范围内。

    Vinylidene fluoride polymer and method of making same
    7.
    发明授权
    Vinylidene fluoride polymer and method of making same 失效
    偏二氟乙烯聚合物及其制备方法

    公开(公告)号:US5283302A

    公开(公告)日:1994-02-01

    申请号:US923487

    申请日:1992-08-03

    IPC分类号: C08F214/22 C08F14/18

    CPC分类号: C08F214/22

    摘要: Polyvinylidene fluoride (PVDF) having such crystallization properties as to produce small spheralite sizes without sacrificing properties, processability, purity, etc. comprises 99.5-96 wt. % of vinylidene fluoride and 0.5-4 wt. % of a comonomer selected from the group consisting of hexafluoropropylene, tetrafluoroethylene and mixtures thereof, has a logarithmic viscosity of 0.9-1.3 dl/g and a molecular weight distribution, as expressed by the ratio of weight average molecular weight to number average molecular weight, of 2.2-2.8. The PVDF is formed by suspension polymerizing vinylidene fluoride and 1-5 wt. % of the desired comonomer, in an aqueous medium in the presence of an oil-soluble initiator, so that a logarithmic viscosity [.eta..sub.1 ] of 1.3-1.9 dl/g is obtained at a vinylidene fluoride conversion of 10-50%; then adding a chain transfer agent to the medium and continuing polymerization so that the logarithmic viscosity [.eta..sub.2 ] of the final polymer is 0.3-0.7 dl/g lower than [.eta..sub.1 ] but remains in the range of 0.9-1.3 dl/g.

    摘要翻译: 具有这样的结晶特性的聚偏二氟乙烯(PVDF)能够在不牺牲性能,加工性,纯度等的情况下产生小的球晶尺寸,包括99.5-96wt。 %偏二氟乙烯和0.5-4wt。 选自六氟丙烯,四氟乙烯及其混合物的共聚单体的%具有0.9-1.3dl / g的对数粘度和由重均分子量与数均分子量的比率表示的分子量分布, 为2.2-2.8。 PVDF通过悬浮聚合偏二氟乙烯和1-5重量% %的所需共聚单体,在油溶性引发剂存在下的水性介质中,使得在偏二氟乙烯转化率为10-50%时获得的对数粘度((η)1)为1.3-1.9dl / g) ; 然后向介质中加入链转移剂并继续聚合,使得最终聚合物的对数粘度((η)2)低于((η))为0.3-0.7dl / g,但仍保持在0.9- 1.3 dl / g。