Fine particles of polyvinyl chloride and process for producing the same
    1.
    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。

    Vinylidene fluoride polymer and method of making same
    4.
    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
    5.
    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。

    Method of temperature-calibrating heat treating apparatus
    9.
    发明授权
    Method of temperature-calibrating heat treating apparatus 有权
    热处理装置的温度校准方法

    公开(公告)号:US06329643B1

    公开(公告)日:2001-12-11

    申请号:US09653460

    申请日:2000-08-31

    IPC分类号: H05B102

    摘要: A second vertical heat treating apparatus is temperature-calibrated based on a heat treatment result obtained by a first vertical heat treating apparatus for reference. First, temperature measurement wafers is heated in the first apparatus to obtain set values of temperature controllers for a target value of temperature. Then, wafers are subjected to an oxidizing process in the first apparatus by using these set values to form an oxide film. The thickness of the oxide film is measured and recorded as a reference film thickness. Then, wafers are subjected to an oxidizing process in a second apparatus at temperatures near the target value to form an oxide film. The thickness of the oxide film is measured, and difference in thickness between the oxide film formed in the second apparatus and the reference film thickness is obtained. The oxidizing process in the second apparatus is repeated to obtain set values of temperature controllers for the second apparatus at the time when the difference in film thickness becomes zero. The second apparatus is temperature-calibrated on the basis of the set value thus obtained.

    摘要翻译: 基于由第一垂直热处理装置获得的热处理结果进行参考的第二垂直热处理装置进行温度校准。 首先,在第一装置中加热温度测量晶片,以获得目标温度值的温度控制器的设定值。 然后,通过使用这些设定值在第一装置中对晶片进行氧化处理,形成氧化膜。 氧化膜的厚度被测量并记录为参考膜厚度。 然后,在靠近目标值的温度下,在第二装置中对晶片进行氧化处理,以形成氧化膜。 测量氧化膜的厚度,并且获得在第二装置中形成的氧化膜之间的厚度差和参考膜厚度。 重复第二装置中的氧化处理,以获得当膜厚度差为零时第二装置的温度控制器的设定值。 基于由此获得的设定值对第二装置进行温度校准。

    Epoxy group-containing vinylidene fluoride copolymer and its application
to secondary battery
    10.
    发明授权
    Epoxy group-containing vinylidene fluoride copolymer and its application to secondary battery 失效
    含环氧基的偏二氟乙烯共聚物及其在二次电池中的应用

    公开(公告)号:US5739234A

    公开(公告)日:1998-04-14

    申请号:US646492

    申请日:1996-05-08

    摘要: A vinylidene fluoride copolymer having a relatively high molecular weight is formed by copolymerizing (a) vinylidene fluoride as a principal component, (b) a small amount of epoxy group-containing monomer, and (c) an optional component, such as an unsaturated dibasic acid monoester functioning as a curing agent for the epoxy group. When cured with an optional epoxy curing agent, the vinylidene fluoride copolymer provides a cured product having an adhesion with a metal substrate, etc., and also showing excellent solvent resistance and chemical resistance. The vinylidene fluoride copolymer is particularly suitable for constituting a binder for producing an electrode for a non-aqueous solvent-type secondary battery.

    摘要翻译: 通过共聚(a)偏二氟乙烯作为主要成分,(b)少量含环氧基的单体,和(c)任选的组分,如不饱和二元碱,形成具有较高分子量的偏二氟乙烯共聚物 用作环氧基的固化剂的酸性单酯。 当使用任选的环氧固化剂固化时,偏二氟乙烯共聚物提供了与金属基材等具有粘合性的固化产物,并且还具有优异的耐溶剂性和耐化学性。 偏二氟乙烯共聚物特别适用于构成用于制造非水溶剂型二次电池用电极的粘合剂。