摘要:
Fluorochemical biurets containing one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, the radicals and moieties bonded together by hetero atom-containing or organic linking groups are provided. These fluorochemical biurets are useful in the form of aqueous dispersions or emulsions or organic solutions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.
摘要:
Fluorochemical biurets containing one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, the radicals and moieties bonded together by hetero atom-containing or organic linking groups are provided. These fluorochemical biurets are useful in the form of aqueous dispersions or emulsions or organic solutions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.
摘要:
POLYFLUOROCARBON COMPOUNDS PREPARED BY REACTING A PERFLUOROALKYL POLYAMIDE HAVING FROM 3-17 PERFLUORINATED CARBON ATOMS WITH A VINYL SULFONE. THE COMPOUNDS ARE USEFUL AS OIL AND WATER REPELLENCY AGENTS FOR TEXTILES.
摘要:
Woven and knit fabrics containing expanded polytetrafluoroethylene (ePTFE) fibers and at least one other fiber are provided. The ePTFE fiber may be woven or knit as a single, non-twisted fiber, as part of a multifilament fiber, or may be twisted or braided with another fiber. The ePTFE fiber, whether alone or in combination with a weave fiber(s), may be utilized in either the warp and/or the weft direction. The woven and knit fabrics are concurrently breathable, lightweight, durable, drapable, and fast drying. The ePTFE fibers have a substantially rectangular configuration. In some embodiments, the woven or knit fabric is flame resistant. In addition, the woven and knit fabrics are quiet, soft, and drapable. Treatments may be provided to the surface of the ePTFE fiber and/or the fabrics to impart one or more desired functionality, such as, for example, oleophobicity, anti-microbial, contamination resistance, or UV stability.
摘要:
Expanded polytetrafluoroethylene (ePTFE) monofilament fibers and woven fabrics formed from the ePTFE fibers are provided. The ePTFE fibers have a substantially rectangular configuration, a density less than about 1.0 g/cc, and an aspect ratio greater than 15. Additionally, the ePTFE fibers are microporous and have a node and fibril structure. The ePTFE fiber may be woven into a fabric without first twisting the fiber. A polymer membrane and/or a textile may be laminated to the woven fabric to produce a laminated article. The ePTFE woven fabric simultaneously possesses high moisture vapor transmission (highly breathable) and high water entry pressure (water resistant). The woven fabric is quiet, soft, and drapable, making it especially suitable for use in garments, gloves and footwear applications. Treatments may be provided to the surface of the ePTFE fiber and/or the woven fabric to impart one or more desired functionality, such as, for example, oleophobicity.
摘要:
The present invention relates to a coated microfibrous web, a process for producing the same, use thereof as a covering of a radiation protection material as well as a radiation protection device. The coated microfibrous web comprises: (i) a microfibrous web impregnated with a fluoropolymer; and (ii) a layer comprising polyurethane, which is present only on one side of the microfibrous web.
摘要:
A laminate is generally provided having alcohol repellency properties. In one particular embodiment, the laminate includes a meltblown web bonded to a spunbond web (e.g., a SM laminate, a SMS laminate, a SMMS laminate, etc.). A fluorinated polymeric coating is attached to the surface of the spunbond web (e.g., grafted). The fluorinated polymeric coating comprises a perfluoroalkyl(alkyl) (meth)acrylate monomer polymerized on the surface of the spunbond web via exposure to a low frequency energy source. The perfluoroalkyl(alkyl) (meth)acrylate monomer has a perfluoroalkyl side groups comprising —(CF2)z—F, where z is an integer from 1 to 6. The laminate has an alcohol repellency of greater than 80%.