摘要:
A composition comprising at least one first divalent unit represented by formula (A) or formula (B); and at least one of a second divalent unit comprising a pendant Z group or a monovalent unit comprising a thioether linkage and a terminal Z group, wherein each Z group is independently selected from the group consisting of —P(O)(OY)2 and —O—P(O)(OY)2. Rf is a perfluoropolyether group. Q is selected from the group consisting of a bond, —C(O)—N(R1)—, and —C(O)—O—. R″, R′″, R and R1 are each independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms. X is selected from the group consisting of alkylene, arylalkylene, and alkylarylene, wherein alkylene, arylalkylene, and alkylarylene are each optionally interrupted by at least one ether linkage. Y is selected from the group consisting of hydrogen, alkyl, trialkylsilyl, and a counter cation. Methods of treating a surface using these compositions and articles with a surface in contact with these compositions are provided. Methods of making these compositions are also provided.
摘要:
Additives for reducing the loss of drilling fluid into the formation surrounding a wellbore during the drilling process as well as drilling fluids comprising the additives and methods of using such additives. The additive includes elastomeric, polymeric, and acrylate, non-agglomerated microspheres.
摘要:
Described are compositions containing fluorinated polyether isocyanate derived silane compounds for treating substrates such as hard surfaces, e.g. ceramic and/or glass, to render them oil and water repellent, and stain resistant, articles having coatings comprising such compounds, and methods for applying such coatings.
摘要:
Methods for modifying the wettability of sandstone. Compositions comprising sandstone having a modified wettability. Such wettability modifications may be useful, for instance, in improving the well-deliverability of an oil and/or gas well located in a sandstone formation.
摘要:
Described are monomeric fluorochemical surfactants having two perfluoroalkyl sulfonamido segments and two hydrophilic group, which are more efficient and effective in lowering the surface tension of organic solvents and water compared to other C4-based fluorochemical surfactants.
摘要:
The present invention provides a fluorochemical composition comprising: (a) one or more fluorochemical oligomers derivable from a free radical polymerization of one or more fluorinated monomers and optionally one or more non-fluorinated monomers in the presence of a chain transfer agent, said fluorochemical oligomer being free of acid groups and comprising one or more groups of the formula: -M1(R)q(Y)p−q−1 (I) wherein M1 is selected from the group consisting of Si, Ti, Zr, B, Al, Ge, V, Pb, Sn and Zn, R represents a non-hydrolysable group, Y represents a hydrolysable group, q is 0, 1 or 2, p equals the valence of M1 and is 3 or 4 and p−q−1 is at least 1; (b) one or more non-fluorinated compounds of an element M2 selected from the group consisting of Si, Ti, Zr, B, Al, Ge, V, Pb, Sn and Zn and having at least two hydrolysable groups per molecule in an amount sufficient to form a polycondensation product upon reaction with said fluorochemical oligomer (a); (c) water; and (d) an organic solvent in an amount sufficient to dissolve and/or disperse components (a), (b) and (c). The invention also provides compositions comprising condensates of components (a) and (b) of the above composition and a method of treatment of substrates therewith.
摘要:
The present invention provides a curable composition for use in retarding the formation of biofilms. The curable composition comprises a polymer derived from ethylenically unsaturated units having pendent long-chain aliphatic groups; ethylenically unsaturated units having pendent poly(oxyalkylene) groups; and ethylenically unsaturated units having pendent substrate-reactive groups; and a crosslinking agent.
摘要:
Fluorochemical oligomeric silanes, compositions comprising such silanes and/or the condensation products of such silanes, and coatings produced with such compositions.
摘要:
Method of forming a very hydrophobic, extremely hydrophobic or superhydrophobic surface comprising depositing a composition comprising hydrophobic microparticles, hydrophobic nanoparticles, or a mixture thereof and a binder in sufficient quantity to provide a hydrophobic or a superhydrophobic surface on a substrate having a micropatterned surface having raised portions, recessed portions or a combination thereof.
摘要:
A composition comprising at least one fluorochemical polyether silane compound having a polyfluoropolyether segment and at least two hydrolysable silane groups per molecule, one or more non-fluorinated compounds having at least two hydrolysable groups per molecule, and/or a partial condensate thereof, is disclosed. The composition provides durable water, oil and stain repellency to a substrate.