Fluorinated phosphonic acid compounds, useful as treatments for substrate surfaces, have the formula (I) : wherein: R1 is a straight chain alkylene group having from 3 to 21 carbon atoms, an oxa-substituted straight chain alkylene group having from 2 to 20 carbon atoms, or a thia-substituted straight chain alkylene group having from 2 to 20 carbon atoms; R2 is a perfluoroalkyl group having from 4 to 10 carbon atoms; R3 is hydrogen, an alkali metal cation, or an alkyl group having from 1 to 6 carbon atoms; and M is hydrogen or an alkali metal cation, with the proviso that if R1 is an unsubstituted straight chain alkylene group, then the sum of carbon atoms in R1 and R2 combined is at least 10.
METHOD FOR PREPARING FLUORINATED BENZOTRIAZOLE COMPOUNDS
申请人:BOARDMAN Larry D.
公开号:US20080114177A1
公开(公告)日:2008-05-15
Fluorinated benzotriazole compounds may be prepared by contacting a fluorochemical monofunctional compound, such a fluorinated alcohol, with a carboxybenzotriazole in the presence of a coupling agent, and an optional amine catalyst.
11BETA-HALOGEN-7ALPHA-SUBSTITUTED ESTRATRIENES, METOD FOR PRODUCING PHARMACEUTICAL PREPARATIONS CONTAINING SAID 11BETA-HALOGEN-7ALPHA- SUBSTITUTED ESTRATRIENES AND USE OF THE SAME FOR PRODUCING MEDICAMENTS
申请人:——
公开号:US20030069434A1
公开(公告)日:2003-04-10
This invention describes the new 11&bgr;-halogen-7&agr;-substituted estratrienes of general formula I
1
in which
R
11
is a fluorine or chlorine atom, and the other substituents have the meanings that are explained in more detail in the description.
The compounds have antiestrogenic properties or tissue-selective estrogenic properties and are suitable for the production of pharmaceutical agents.
The first examples of liquid crystalline chloro-bridged dinuclear palladium organyls carrying semiperfluorinated alkyl chains at their peripheries have been synthesised. The liquid crystalline properties were investigated using polarised optical microscopy, differential scanning calorimetry and X-ray scattering. Compounds with six semifluorinated chains and two alkyl chains show hexagonal columnar liquid-crystalline phases with dramatically enhanced mesophase stabilities compared to the related hydrocarbon derivatives, which have only monotropic discotic nematic phases. Compounds with only four semifluorinated alkyl chains and two alkyl chains exhibit enantiotropic smectic A and monotropic smectic C mesophases. Preliminary experiments with mixed systems (eight-chain compounds and six-chain compounds, as well as binary systems with dodecane or TNF) were also carried out.
Liquid crystalline materials containing perfluoroalkyl and alkenyl tail groups
申请人:——
公开号:US20020195585A1
公开(公告)日:2002-12-26
Compounds that are useful as components in liquid crystal compositions, particularly in ferroelectric liquid crystal compositions. Compounds of the invention are rod-like molecules with a mesogenic (generally linear) core to which an alkene tail and an alkyl or alkoxy tail with a perfluoroalkyl terminal portion are bonded. Compounds of the invention can contain a variety of one, two or three ring cores, wherein the rings maybe aromatic or alicyclic. Alkenes of the invention are useful as components to improve LC properties of mixtures, for example, to lower melting point of lower freezing point, of LC compositions.