摘要:
The invention relates to new organosilanes represented by the following general formula: wherein R denotes a methyl, ethyl, propyl, or phenyl radical; R' denotes a monovalent hydrocarbon group having from 7 to 21 carbon atoms; R" denotes hydrogen or a methyl radical; R is selected from the class consisting of monovalent hydrocarbon groups having from 8 to 22 carbon atoms and acyl groups having from 8 to 22 carbon atoms; p has the value of 0, 1 or 2; m has the value of 1, 2, or 3; m + p has the value of 2 or 3; y has an average value from 1 to 20; n is a positive integer from 1 to 7; and q is a positive integer from 1 to 5. The use of the organosilanes as lubricants for magnetic recording media is described.
摘要:
Novel cyano- and hydroxyl-substituted 1,3-dioxane and dioxolane derivatives are prepared by reacting certain cyano-substituted compounds with a polyhydroxyl compound. These compounds have utility as components in hydraulic fluids.
摘要:
Procédé de traitement d'une surface comprenant une étape d'application, sur ladite surface, de molécules hydrophobes et/ou oléophobes et/ou d'application d'un épilame, ledit procédé comprenant une étape de prétraitement par un procédé plasma de ladite surface avant ladite étape d'application de molécules hydrophobes et/ou oléophobes et/ou d'application d'un épilame.
摘要:
The present disclosure describes a strategy to create self-healing, slippery self-lubricating polymers. Lubricating liquids with affinities to polymers can be utilized to get absorbed within the polymer and form a lubricant layer (of the lubricating liquid) on the polymer. The lubricant layer can repel a wide range of materials, including simple and complex fluids (water, hydrocarbons, crude oil and bodily fluids), restore liquid-repellency after physical damage, and resist ice, microorganisms and insects adhesion. Some exemplary applications where self-lubricating polymers will be useful include energy-efficient, friction-reduction fluid handling and transportation, medical devices, anti-icing, optical sensing, and as self-cleaning, and anti-fouling materials operating in extreme environments.
摘要:
Durch den Zusatz einer kleinen Menge von Carbodiimiden können Estergruppen enthaltende Schmierstoff-Grundsubstanzen stabilisiert und die Nutzungsdauer damit hergestellter Schmierstoffe entscheidend verlängert werden.
摘要:
A mold releasing agent comprising a silicon-containing compound represented by the formula:
R 1 n SiR 2 4-n
wherein R 1 is
(R 3 and R 4 are a hydrocarbon group having 1 to 4 carbon atoms), R 2 is a hydrocarbon group having 1 to 4 carbon atoms or a halogenated hydrocarbon group having 1 to 4 carbon atoms, n is 3 or 4, and a silicon- and/or fluorine-containing compound having at least two hydroxyl groups or alkoxyl groups in one molecule. The mold releasing agent of the present invention is excellent in mold releasing property, has a long life, provides a good surface finishing of molded article, and has no influence on secondary processability.
摘要:
An oil composition contains 100 parts by weight of a base oil selected from the group consisting of mineral base oil, synthetic base oil and mixtures thereof, and 0.1 to 20 parts by weight of a hydrogenated oil obtained by hydrogenating an oil selected from the group consisting of coal type tar, oil produced by fractionating coal type tar, a hydrocarbon obtained by thermally cracking petroleum and having a boiling point of not lower than 200 DEG C, a hydrocarbon obtained by catalytically cracking petroleum and having a boiling point of not lower than 200 DEG C, a hydrocarbon obtained by catalytically reforming petroleum and having a boiling point of not lower than 200 DEG C, and mixtures thereof, whereby the hydrogenated oil has the hydrogen-donating properties of not lower than three times the hydrogen-donating properties of the base oil at temperatures of not lower than 350 DEG C.
摘要:
An oil composition contains 100 parts by weight of a base oil selected from the group consisting of mineral base oil, synthetic base oil and mixtures thereof, and 0.1 to 20 parts by weight of a hydrogenated oil obtained by hydrogenating an oil selected from the group consisting of coal type tar, oil produced by fractionating coal type tar, a hydrocarbon obtained by thermally cracking petroleum and having a boiling point of not lower than 200°C, a hydrocarbon obtained by catalytically cracking petroleum and having a boiling point of not lower than 200°C, a hydrocarbon obtained by catalytically reforming petroleum and having a boiling point of not lower than 200°C, and mixtures thereof, whereby the hydrogenated oil has the hydrogen-donating properties of not lower than three times the hydrogen-donating properties of the base oil at temperatures of not lower than 350°C.