会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Fine powders of polytetrafluoroethylene
    • 聚四氟乙烯细粉
    • US06479591B2
    • 2002-11-12
    • US09907821
    • 2001-07-19
    • Valery KapeliouchkoEnrico Marchese
    • Valery KapeliouchkoEnrico Marchese
    • C08L2712
    • C08F259/08
    • Fine powders of modified PTFE having a “core-shell” structure; the fine powder being formed by: a “core” of tetrafluoroethylene (TFE) modified by one or more monomers selected from: a) dioxoles; b) one or more perfluorinated monomers which cyclize during the polymerization; a “shell” of TFE modified by perfluoropropene (PFP); the amount, referred to the total core+shell particle, of comonomers 1) in the “core” being in the range 0.01-0.06% by weight; the amount, referred to the total core+shell particle, of perfluoropropene 2) in the “shell” being in the range 0.002-0.06% by weight; the thermal instability index (TII) of the fine powder being equal to or lower than 5, determined according to ASTM D4895.
    • 具有“核 - 壳”结构的改性PTFE的细粉末; 该细粉末由以下一种或多种单体改性的四氟乙烯(TFE)的“芯”形成:a)二氧杂环戊烯; b)在聚合过程中环化的一种或多种全氟化单体;由TFE改性的TFE的“壳” 全氟丙烯(PFP); “芯”中的共聚单体1)的总核心+壳粒子的量在0.01-0.06重量%的范围内; “壳”中的全氟丙烯2的总核+壳粒子的量,在0.002-0.06重量%范围内;细粉末的热不稳定指数(TII)等于或小于5 ,根据ASTM D4895测定。
    • 6. 发明授权
    • Process for preparing modified PTFE
    • 改性PTFE的制备方法
    • US06262209B1
    • 2001-07-17
    • US09235407
    • 1999-01-22
    • Valery KapeliouchkoEnrico Marchese
    • Valery KapeliouchkoEnrico Marchese
    • C08F21426
    • C08F214/262
    • Method for preparing modified PTFE by suspension, wherein as comonomers perfluoroalkylvinylethers in which the alkyl has from 1 to 5 carbon atoms, and/or a perfluorodioxole are used, characterized by the following conditions: a part of the comonomer, from 15 to 90% by weight of the total amount is to be fed at the beginning of the reaction; the remaining part of the comonomer is to be distributed during the reaction so as to obtain a constant speed of the comonomer incorporation in the polymer chain; a perfluorinated surfactant and a buffering salt are used; a persulphate with a reducing agent is used as initiator in such a ratio as to generate a part of the radicals from the redox reaction and another one from the persulphate thermal decomposition; one operates with a polymerization pressure from 15 to 30 bar.
    • 通过悬浮液制备改性PTFE的方法,其中使用其中烷基具有1至5个碳原子的共聚单体全氟烷基乙烯基醚和/或全氟二恶烷,其特征在于以下条件:一部分共聚单体为15〜90% 总量的重量在反应开始时进料; 共聚单体的剩余部分将在反应期间分布,以获得聚合物链中共聚单体引入的恒定速度;使用全氟化表面活性剂和缓冲盐;将具有还原剂的过硫酸盐用作引发剂 这种比例从氧化还原反应产生一部分自由基,另一种来自过硫酸盐热分解;一种以15至30巴的聚合压力进行操作。
    • 9. 发明授权
    • Process for the preparation of aqueous dispersions of fluoropolymers
    • 制备含氟聚合物水分散体的方法
    • US06576703B2
    • 2003-06-10
    • US09789728
    • 2001-02-22
    • Valery KapeliouchkoEnrico Marchese
    • Valery KapeliouchkoEnrico Marchese
    • C08L2712
    • C08F259/08C08F2/26C08F14/26C08F2/16
    • Process for the preparation of a dispersion based on homopolymers/copolymers of tetrafluoroethylene (TFE), said dispersion having a bimodal or multimodal distribution of the particle diameters, wherein the fraction of small particles is in the range 1.5-35% by weight calculated on the dry product; the ratio between the average diameter of the small particles with respect to the average diameter of the dispersion obtained from the polymerization being in the range 0.02-0.6; said process comprising the following essential steps: (a) preparation of an aqueous microemulsion comprising fluorinated surfactants and (per)fluoropolyether oils (PFPE); (b) feeding of the microemulsion into the polymerization reactor; (c) feeding of at least one fluorinated surfactant.
    • 用于制备基于四氟乙烯(TFE)的均聚物/共聚物的分散体的方法,所述分散体具有粒径的双峰或多峰分布,其中小颗粒的分数为1.5〜35重量% 干燥产品; 小颗粒的平均直径相对于由聚合得到的分散体的平均直径的比在0.02-0.6的范围内; 所述方法包括以下必要步骤:(a)制备包含氟化表面活性剂和(全)氟聚醚油(PFPE)的水性微乳液;(b)将微乳液进料到聚合反应器中;(c)进料至少一种氟化 表面活性剂。