利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

47 条记录 (耗时 0.022 秒)

    Composition for the removal of water from a surface
    21.
    发明授权
    Composition for the removal of water from a surface 失效
    用于从表面去除水的组合物

    公开(公告)号：US6096240A

    公开(公告)日：2000-08-01

    申请号：US320651

    申请日：1999-05-27

    申请人： Ezio Strepparola ,  Simonetta Fontana ,  Rossella Silvani

    发明人： Ezio Strepparola ,  Simonetta Fontana ,  Rossella Silvani

    IPC分类号： B01D12/00 ,  C08G65/00 ,  C09D171/08 ,  C09K3/00

    CPC分类号： C08G65/007 ,  B01D12/00

    摘要： Method for the water removal from a surface, which comprises covering the surface with a composition having specific weight higher than that of the water, and subsequently removing water from the composition by skimming, such composition comprising a (per)fluoropolyether having molecular weight comprised between 300 and 1500 and a non ionic additive having a (perfluoropolyethereal structure similar to that of the solvent, linked to an hydrogenated part of hydrophilic type, the molecular weight of the (per)fluorinated part is comprised between 400 and 1200 and the ratio by weight between (per)fluorinated part and hydrogenated part is comprised between 1.5 and 3.5.

    摘要翻译： 从表面除去水的方法，其包括用具有比水重量更高的比重的组合物覆盖表面，以及随后通过撇取从组合物中除去水，该组合物包含（per）含氟聚醚，其分子量介于 300和1500的非离子添加剂和具有与溶剂相类似的全氟聚醚结构的非离子添加剂，与亲水型的氢化部分相连，（每个）氟化部分的分子量在400和1200之间，重量比 （全）氟化部分和氢化部分之间的比例在1.5和3.5之间。

    Process for preparing hydrogen-terminated polyoxyperfluoroalkanes
    22.
    发明授权
    Process for preparing hydrogen-terminated polyoxyperfluoroalkanes 失效
    制备氢封端的聚氧氟烷烃的方法

    公开(公告)号：US5969192A

    公开(公告)日：1999-10-19

    申请号：US769861

    申请日：1996-12-19

    申请人： Giuseppe Marchionni ,  Gianfranco Spataro ,  Ezio Strepparola

    发明人： Giuseppe Marchionni ,  Gianfranco Spataro ,  Ezio Strepparola

    IPC分类号： C08G65/00 ,  C08G65/324 ,  C07C43/11

    CPC分类号： C08G65/007 ,  C08G65/324

    摘要： A process for preparing hydrogen-terminated polyoxyperfluoroalkanes having molecular weight lower than 1800, by decarboxylation of the corresponding polyoxyperfluoroalkanes having one or two end groups selected form --OCF.sub.2 COOZ, --OCF.sub.2 CF.sub.2 COOZ and --OCF(CF.sub.3)COOZ, wherein Z is an alkaline metal or ammonium, carried out in the presence of water at temperatures from 140.degree.-170.degree. C. and under a pressure of at least 4 atmospheres.

    摘要翻译： 通过使具有一个或两个选自-OCF 2 COOZ，-OCF 2 CF 2 COOZ和-OCF（CF 3）COOZ的端基的相应的聚氧氟烷烃脱羧来制备分子量低于1800的氢封端的聚氧全氟烷烃的方法，其中Z是碱金属或铵 在140-170℃的温度和至少4个大气压的压力下在水的存在下进行。

    Process for the preparation of perfluoropolyoxyalkylenes with hydroxyl end groups
    28.
    发明授权
    Process for the preparation of perfluoropolyoxyalkylenes with hydroxyl end groups 失效
    用羟基端基制备全氟聚氧化烯的方法

    公开(公告)号：US06509509B2

    公开(公告)日：2003-01-21

    申请号：US09750101

    申请日：2000-12-29

    申请人： Claudio Tonelli ,  Antonio Russo ,  Ezio Strepparola

    发明人： Claudio Tonelli ,  Antonio Russo ,  Ezio Strepparola

    IPC分类号： C07C4311

    CPC分类号： C08G65/324 ,  C08G65/007

    摘要： A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure: T1—CFW1—O—Rf—CFW2—T2  (I) wherein: T1, T2, are selected from —CH2OH, —F, —CF3, —CF2CF3 with the proviso that at least one of T1 and T2 is —CH2OH; W1 and W2 are selected from F, CF3; Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight 500-10,000 comprising one or more units of the type —CF2CF2O—, —CF2O—, —C3F6O—, —CF2(CF2)zCF2O— (z=1,2); —CR4R5CF2CF2O— with R4 and R5 selected from H, Cl, perfluoroalkyl group; said process comprising the following steps: a) adding an ester precursor having structure (I) and T1, T2 end groups selected from —F, —CF3, —CF2CF3, —COOR (R=linear or branched alkyl group having a number of C atoms from 1 to 5), with the proviso that at least one of T1 and T2 is —COOR, in a reaction mixture formed by: an inert or protic reaction solvent; a reducing agent selected from metal hydrides; an unreactive organic base with respect to the ester; b) hydrolysis of the product obtained in step a) for obtaining the compounds of structure (I) with at least a —CH2OH end group.

    摘要翻译： 制备具有以下结构的羟基端基的全氟聚氧化烯的方法：其中：T1，T2选自-CH2OH，-F，-CF3，-CF2CF3，条件是T1和T2中的至少一个为-CH2OH; W1和W2 选自F，CF 3; Rf是数均分子量为500-10,000的全氟聚氧亚烷基链，其包含一种或多种-CF 2 CF 2 O-，-CF 2 O-，-C 3 F 6 O-，-CF 2（CF 2）z CF 2 O-（z = 1,2）; -CR4R5CF2CF2O-，其中R4和R5选自H，Cl，全氟烷基; 所述方法包括以下步骤：a）加入具有结构（I）和T1的酯前体，T2端基选自-F，-CF 3，-CF 2 CF 3，-COOR（R =直链或支链烷基，其数目为C 原子从1至5），条件是至少一个T1和T2是-COOR，在由惰性或质子反应溶剂形成的反应混合物中;还原剂选自金属氢化物;非反应性有机碱，相对于 酯化; b）在步骤a）中获得的产物的水解，得到至少具有-CH 2 OH端基的结构（I）化合物。

    Curable fluoroelastomer compositions
    29.
    发明授权
    Curable fluoroelastomer compositions 有权
    可固化的含氟弹性体组合物

    公开(公告)号：US06448319B1

    公开(公告)日：2002-09-10

    申请号：US09481698

    申请日：2000-01-12

    申请人： Ezio Strepparola ,  Franco Barbieri

    发明人： Ezio Strepparola ,  Franco Barbieri

    IPC分类号： C08K506

    CPC分类号： C08K5/06 ,  C08L27/16 ,  C08L59/00 ,  C08L2666/14

    摘要： Use in curable fluoroelastomer compositions of additives having polyacetal structure of general formula: HOCH2—[Rf—CH2O(CH2O)cCH2]t—Rf—CH2OH  (I) wherein: c=1-10, preferably 1-3; t=0.5-20. Rf=poly-fluorooxyalkylenic chain, having number average molecular weight ({overscore (M)}n) in the range 500-2,500, preferably 1,000-2,000; the number average molecular weight of the formula (I) additive is in the range 3,000-15,000, preferably 3,000-10,000.

    摘要翻译： 在具有以下通式的聚缩醛结构的添加剂的可固化含氟弹性体组合物中使用：其中：c = 1-10，优选1-3; t = 0.5-20.Rf =数均分子量（{overscore（M）} n）在500-2,500，优选1,000-2,000范围内的聚氟氧烷基链;式（I）的数均分子量 添加剂在3,000-15,000，优选3,000-10,000的范围内。

    Curable composition of fluoroelastomers
    30.
    发明授权
    Curable composition of fluoroelastomers 失效
    含氟弹性体的固化组合物

    公开(公告)号：US6005054A

    公开(公告)日：1999-12-21

    申请号：US848660

    申请日：1997-04-29

    申请人： Franco Barbieri ,  Ezio Strepparola ,  Mauro Luca Villa ,  Raffaele Ferro

    发明人： Franco Barbieri ,  Ezio Strepparola ,  Mauro Luca Villa ,  Raffaele Ferro

    IPC分类号： C08K5/06 ,  C08L27/12 ,  C08L27/16 ,  C08L71/00

    CPC分类号： C08L27/12 ,  C08L27/16 ,  C08L71/00

    摘要： Use of additives of the classes of mono- and/or di-hydroxypolyfluoroethers comprising the fluoropolyoxyalkylenic repeating units chosen from the following ones: (C.sub.3 F.sub.6 O); (CFXO) wherein X=F, CF.sub.3 ; (CH.sub.2 CF.sub.2 CF.sub.2 O); (CF.sub.2 (CF.sub.2).sub.z CF.sub.2 O) wherein z is an integer equal to 1 or 2; (C.sub.2 F.sub.4 O), in curable compositions of fluoroelastomers to improve the coefficient of friction without lowering the adhesion with bonding agents to metal reinforcements.

    摘要翻译： 使用包含选自以下的氟代聚氧亚烷基重复单元的单 - 和/或二 - 羟基多氟醚类的添加剂：（C 3 F 6 O）; （CFXO）其中X = F，CF 3; （CH 2 CF 2 CF 2 O） （CF 2（CF 2）z CF 2 O）其中z是等于1或2的整数; （C2F4O），用于改善摩擦系数而不降低与粘合剂对金属增强材料的粘合性的含氟弹性体的可固化组合物。