摘要:
A polymer is provided comprising a first pendant group selected from at least one of a perfluorinated ether group or a perfluoroalkanesulfonamido group, a second pendant group comprising an ammonium group, wherein the second pendant group is free of silicon, and a third pendant group comprising an ammonium group and a reactive silicon containing group. A composition comprising the polymer is provided. The polymer and composition are useful for protecting a substrate, for example, to render the substrate oil repellent, water repellent, or both, or to provide stain repellency to the substrate.
摘要:
A polymer is provided comprising a first pendant group selected from at least one of a perfluorinated ether group or a perfluoroalkanesulfonamido group, a second pendant group comprising an ammonium group, wherein the second pendant group is free of silicon, and a third pendant group comprising an ammonium group and a reactive siliconcontaining group. A composition comprising the polymer is provided. The polymer and composition are useful for protecting a substrate, for example, to render the substrate oil repellent, water repellent, or both, or to provide stain repellency to the substrate.
摘要:
A perfluoropolyether thiol compound comprises a perfluoropolyether segment, at least one mercapto group (—SH), and at least one intervening divalent carbonylimino moiety (—C(═O)—NR—, wherein R is hydrogen or alkyl). The compound can be produced, for example, by a ring-opening reaction of thiolactones with perfluoropolyether-substituted, primary or secondary amines. The compound can be used, for example, as a polymerization chain transfer agent, as an intermediate for the preparation of functional group-containing fluorochemical derivatives such as disulfides, and as a fluorinated surface treatment.
摘要:
A perfluoropolyether thiol compound comprises a perfluoropolyether segment, at least one mercapto group (—SH), and at least one intervening divalent carbonylimino moiety (—C(═O)—NR—, wherein R is hydrogen or alkyl). The compound can be produced, for example, by a ring-opening reaction of thiolactones with perfluoropolyether-substituted, primary or secondary amines. The compound can be used, for example, as a polymerization chain transfer agent, as an intermediate for the preparation of functional group-containing fluorochemical derivatives such as disulfides, and as a fluorinated surface treatment.
摘要:
Filter media is treated with a composition comprising cationic fluorinated ether silanes to provide durable water- and/or oil-repellency properties.
摘要:
Articles having hydrophobic fluorinated coatings are provided. More specifically, the articles include a substrate, a primer layer of acid-sintered silica nanoparticles, and a hydrophobic fluorinated layer. The hydrophobic fluorinated coatings can be used on a large variety of substrate and tend to be quite durable even when subjected to repeated rubbing and/or cleaning.
摘要:
Reflective articles and related methods of manufacture are provided. These articles include a metallic layer extending across a non-tacky base layer. The base layer includes either a block copolymer or random copolymer with at least two polymeric components, one of which has a glass transition temperature of at least 50 degrees Celsius and the other of which has a glass transition temperature no greater than 20 degrees Celsius. These articles provide excellent optical clarity, non-corrosiveness, ultraviolet light stability, and resistance to outdoor weathering conditions compared to conventional reflective films.
摘要:
Compounds containing at least one perfluoropolyether segment and at least two oxalylamino groups as well as methods of making these compounds are described. The compounds can be polymeric materials or can be used in the preparation of various copolymeric materials by reaction with compounds having at least two primary or secondary amino groups.
摘要:
A surface treatment process comprises (a) providing at least one optical device; (b) providing a curable surface treatment composition comprising (1) at least one fluorinated organosilane compound comprising (i) a monovalent segment selected from polyfluoroalkyl, polyfluoroether, polyfluoropolyether, and combinations thereof and (ii) a monovalent endgroup comprising at least one silyl moiety comprising at least one group selected from hydrolyzable groups, hydroxyl, and combinations thereof, and (2) at least one fluorinated organosilane compound comprising (i) a multivalent segment selected from polyfluoroalkane, polyfluoroether, polyfluoropolyether, and combinations thereof and (ii) at least two monovalent endgroups, each independently comprising at least one silyl moiety comprising at least one group selected from hydrolyzable groups, hydroxyl, and combinations thereof; (c) applying the curable surface treatment composition to the optical device; and (d) curing the applied, curable surface treatment composition.
摘要:
A patterning process comprises (a) providing at least one substrate having at least one major surface; (b) providing at least one patterning composition comprising at least one functionalizing molecule that is a perfluoropolyether organosulfur compound; (c) applying the patterning composition to the major surface of the substrate in a manner so as to form at least one functionalized region and at least one unfunctionalized region of the major surface; and (d) etching at least a portion of the unfunctionalized region.