Abstract:
A process is described for producing surface-modified polypropylene filament yarns that are dyeable from aqueous liquors. This process is characterized in that the filament yarns, comprising standard commercial PP, in the course of their formation in a melt spinning procedure, undergo treatment with a hydrogen peroxide solution. The invention further relates to polyolefin filament yarns obtainable by this process, and to the use of these polyolefin filament yarns for producing sheetlike textile structures, with the possibility of advantageous subsequent dyeing with vat dyes. The treatment referred to or the upgrading step, which in accordance with the prior art normally takes place at a much later point in the production chain, therefore yields a hydrophilized filament yarn without an additional downstream treatment step, such as by plasma treatment, for example, and also without any other additional energy input. The resulting filament yarn can be processed and upgraded in the same way as has hitherto been the case in the industrial practice. Without the aftertreatment of the prior art, the textiles obtained in accordance with the invention exhibit a desirable dyeability. This can be achieved without further pretreatment, by means of vat dyeing by the Thermosol process in deep shades, and the vat dyeing at the same time possesses the high light fastness known for vat dyeings.
Abstract:
A process for dyeing ramie sliver, comprising: 1.) pretreatment: cooking the ramie sliver for 8-12 minutes in a cooking reagent in a bath ratio of 1:4-10, the cooking reagent is a 1-3 g/L aqueous solution of a penetrating agent; and 2.) dyeing: dyeing the cooked ramie sliver in an active dye in a bath ratio of 1:4-10. Also disclosed is a method for preparing ramie yam. The ramie sliver dyed according to the present invention improves the properties of ramie fibers, such that the ramie fibers are less likely to break; and the ramie fibers are less likely to harden, avoiding poor drawing, needle breakage and missing stitches during carding and coalescing in post-procedures, thus achieving the purpose of smooth yam spinning. Also disclosed is a method for preparing ramie colored-spun yam.
Abstract:
The present invention relates to the method for manufacturing textile, by treating textile with an isolated polypeptide having endoglucanase activity, especially in biostoning and bio-polishing process.
Abstract:
Compositions, methods, apparatuses, kits, and combinations are described for permanently or temporarily re-designing, decorating, and/or re-coloring a surface. The compositions useful in the present disclosure include a décor product formulated to be applied and affixed to a surface. If desired, the décor product may be substantially removed from the surface before being affixed thereto. If a user desires to remove the décor product, the décor product may be removed by, for example, vacuuming, wet extraction, chemical application, and the like. If the user desires to affix the décor product to the surface in a permanent or semi-permanent manner, the décor product may be affixed by applying energy thereto in the form of, for example, heat, pressure, emitted waves, an emitted electrical field, a magnetic field, and/or a chemical. The décor product may also be part of a kit or in conjunction with a design device, such as a stencil, to control the application of the décor product to a surface.
Abstract:
Use of at least one transition metal coordination compound for improving the light fastness of dyed polyester material. The transition metal coordination compound may be used together with diperse dyes.
Abstract:
Processes for modifying a textile to improve its performance which comprise the steps of a) contacting a textile comprising fibers with a treating composition comprising an ionic liquid under conditions sufficient to modify at least surfaces of the fibers, thereby provide a performance improvement to treated textile; b) optionally, contacting a textile comprising fibers with a composition comprising a benefit agent; and c) at least partially removing the treating composition from the textile. In specific embodiments, the surface modification comprises a partial dissolution of at least one outer layer of the fibers and/or crystal structure change in at least surfaces of the fibers. The surface modification can impart improvements to the textile or allow embedding or attachment of a benefit agent in the fibers.