摘要:
Perfluoropolyether amide-linked phosphonates and derivatives thereof are provided. Compositions containing perfluoropolyether amide-linked phosphonates or derivatives thereof, perfluoropolyether amide-linked phosphates or derivatives thereof, or combinations thereof are also provided. Additionally, articles, methods of making articles, and methods of reducing contaminant adhesion to a substrate are described.
摘要:
Perfluoropolyether benzotriazole compounds and compositions containing perfluoropolyether benzotriazole compounds are provided. The perfluoropolyether benzotriazole compounds can be attached to a substrate having a metal or metal oxide-containing surface to provide at least one of the following characteristics: anti-soiling, anti-staining, ease of cleaning, repellency, hydrophobicity, or oleophobicity.
摘要:
Perfluoropolyether benzotriazole compounds and compositions containing perfluoropolyether benzotriazole compounds are provided. The perfluoropolyether benzotriazole compounds can be attached to a substrate having a metal or metal oxide-containing surface to provide at least one of the following characteristics: anti-soiling, anti-staining, ease of cleaning, repellency, hydrophobicity, or oleophobicity.
摘要:
A hydrofluoroether compound comprises two terminal fluoroalkyl groups and an intervening substituted or unsubstituted oxymethylene group, each of the fluoroalkyl groups comprising only one hydrogen atom and, optionally, at least one catenated (that is, in-chain) heteroatom; with the proviso that the hydrogen atom is part of a monofluoromethylene moiety.
摘要:
The present invention provides an apparatus comprising a device and a mechanism for heat transfer comprising a hydrofluoroether heat-transfer fluid wherein the heat transfer fluid is represented by the following structure: Rf—O—Rh—O—Rf′ wherein O is oxygen; Rf and Rf′ are, independently, a fluoroaliphatic group, wherein each Rf and Rf′ contain 1 hydrogen atom; Rh is independently a linear, branched or cyclic alkylene group having from 2 to about 8 carbon atoms and at least 4 hydrogen atoms, and wherein the hydrofluoroether compound is free of —O—CH2—O—. Another embodiment of the present invention is a method therefor.
摘要翻译:本发明提供了一种包括装置和用于传热的机构的装置,其包括氢氟醚传热流体,其中传热流体由以下结构表示:<?在线公式描述=“在线公式”结束 =“lead”?> R u> u> u> u> u>在线公式描述=“在线公式 “end =”tail“?>其中O是氧; R f和R f'独立地是氟代脂族基团,其中每个R f和R f' 含有1个氢原子; R h独立地是具有2至约8个碳原子和至少4个氢原子的直链,支链或环状亚烷基,其中所述氢氟醚化合物不含-O-CH 2 -O-。 本发明的另一个实施方案是其方法。
摘要:
A process for recovering a fluorinated carboxylic acid or salts thereof from exhaust gas streams. The process includes contacting the exhaust gas stream with a composition capable of at least partially removing the fluorinated carboxylic acid or salt thereof from the exhaust gas stream. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of fluorinated carboxylic acids or salts thereof that correspond to the general formula: [Rf—O-L-COO−]iXi+ (I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi+ represents a cation having the valence i and i is 1, 2 or 3.
摘要:
A process for the recovery of fluorinated carboxylic acid or derivative thereof from adsorbent particles on which fluorinated carboxylic acid or a salt thereof is adsorbed. The process includes contacting the adsorbent particles with a liquid composition capable of removing at least part of the fluorinated carboxylic acid or salt thereof from the adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of fluorinated carboxylic acids or salts thereof that correspond to the general formula: [RfO-L-COO−]iXi+ (I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi− represents a cation having the valence i and i is 1, 2 or 3.
摘要:
Fluorochemical urethane composition comprising one or more fluorochemical urethane compounds, and one or more auxiliary hydrophobic compounds for treatment of a fibrous substrate to impart or improve one or more of the oil-repellency, stain- and/or soil repellency and stain and/or soil release properties, with improved durability, of the fibrous substrate treated with the composition. Also articles made with such compositions and methods of applying such compositions.