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378 条记录 (耗时 0.019 秒)

    Method for the removal of water from surfaces
    22.
    发明授权
    Method for the removal of water from surfaces 失效
    从表面去除水的方法

    公开(公告)号：US5980642A

    公开(公告)日：1999-11-09

    申请号：US916290

    申请日：1997-08-22

    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 ,  B08B7/00

    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 (per-fluoropolyethereal 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似的全氟聚四氟乙烯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， （全）氟化部分和氢化部分之间的重量比在1.5和3.5之间。

    Process for the protection of stony or coating surfaces
    23.
    发明授权
    Process for the protection of stony or coating surfaces 失效
    保护石块或涂层表面的工艺

    公开(公告)号：US5948478A

    公开(公告)日：1999-09-07

    申请号：US638135

    申请日：1996-04-26

    申请人： Daria Lenti ,  Roberta Marchetti ,  Stefano Turri

    发明人： Daria Lenti ,  Roberta Marchetti ,  Stefano Turri

    IPC分类号： C08G65/00 ,  C09D171/02 ,  B05D3/02

    CPC分类号： C08G65/007 ,  C09D171/02

    摘要： A method of protecting objects from graffiti using fluorinated polymers based on fluoropolyethers in a dry formulation wherein the fluorinated polymer includes a fluorinated part R.sub.F and optionally an hydrogenated part R.sub.H not containing groups capable of linking to basic acceptors by means of hydrogen bonds, the bonds linking the fluorinated part, derived from (per)fluoropolyethers, to the hydrogenated part being of simple C--O ether type, the T' terminal groups being such as to render the structure bi- or polyfunctional thus making possible the curing reaction, and subsequent curing of the fluorinated polymer.

    摘要翻译： 一种在干燥制剂中使用基于氟聚醚的氟化聚合物保护物体免受涂鸦的方法，其中氟化聚合物包括氟化部分RF和任选的氢化部分RH，其不含能够通过氢键连接到碱性受体的基团，所述键连接 衍生自（全）氟代聚醚的氟化部分到氢化部分为简单的CO醚型，T'端基团使结构双官能或多官能化，从而使固化反应成为可能，随后固化 氟化聚合物。

    Amorphous perfluoropolymers
    26.
    发明授权
    Amorphous perfluoropolymers 失效
    无定形全氟聚合物

    公开(公告)号：US5883177A

    公开(公告)日：1999-03-16

    申请号：US845145

    申请日：1997-04-21

    申请人： Pasqua Colaianna ,  Giulio Brinati ,  Vincenzo Arcella

    发明人： Pasqua Colaianna ,  Giulio Brinati ,  Vincenzo Arcella

    IPC分类号： C08F16/38 ,  C08F214/18 ,  C08F214/24 ,  C08F214/26 ,  C08F214/28 ,  C08F216/14 ,  C09D127/18 ,  C09D145/00 ,  C08K5/02

    CPC分类号： C09D145/00 ,  C09D127/18

    摘要： Use of amorphous perfluoropolymers based on homopolymers of the TTD dioxole or its amorphous copolymers to prepare solutions in fluoro-containing solvents, to obtain solutions for coatings, wherein TTD has the formula: ##STR1## wherein R.sub.F is a perfluoroalkylic radical with 1-5 carbon atoms, linear or branched when possible; X.sub.1 and X.sub.2 equal to or different from each other being F or CF.sub.3 ; the TTD amount ranges from 40 to 100% by moles.

    摘要翻译： 使用基于TTD二氧杂环戊烯或其无定形共聚物的均聚物的无定形全氟聚合物在含氟溶剂中制备溶液，以获得涂料溶液，其中TTD具有下式：其中RF是具有1-5个碳的全氟烷基 原子，可以是直链或支链的; X 1和X 2彼此相同或不同，是F或CF 3; TTD量为40-100摩尔％。

    Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups
    29.
    发明授权
    Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups 失效
    制备具有溴或碘的端基的全氟聚醚的方法

    公开(公告)号：US5777174A

    公开(公告)日：1998-07-07

    申请号：US845146

    申请日：1997-04-21

    申请人： Giuseppe Marchionni ,  Pier Antonio Guarda

    发明人： Giuseppe Marchionni ,  Pier Antonio Guarda

    IPC分类号： C07C41/22 ,  C07C43/12 ,  C08G65/00 ,  C07C41/01

    CPC分类号： C08G65/005

    摘要： Process for preparing perfluoropolyethers with bromo- or iodo- containing end groups, respectively, by subjecting a peroxidic perfluoropolyether to thermal treatment, in the absence of UV radiation, at temperatures from 120.degree. C. to 280.degree. C. in the presence of bromo- or iodo-containing compounds having, respectively, the following general formulas: T T' T" C Br wherein T, T', T" equal to or different from each other are selected from Br, F, H or R'.sub.f, wherein R'.sub.f is a perfluoroalkylic chain from 1 to 8 carbon atoms; R R' R" C I wherein R, R', R", equal to or different from each other can be I (iodine), H, F, or R'.sub.f, wherein R'.sub.f has the meaning indicated above.

    摘要翻译： 分别在含溴或碘的端基的情况下通过使过氧化全氟聚醚在不存在UV辐射的情况下在120℃至280℃的温度下，在溴 - 或分别具有以下通式的含碘化合物：相互或彼此相同或不同的T'T“C Br其中T，T'，T”选自Br，F，H或R'f，其中 R'f是1至8个碳原子的全氟烷基链; RR'R“C I其中R，R'，R”彼此相同或不同，可以是I（碘），H，F或R 'f，其中R'f具有上述含义。