摘要:
A method of treating fibrous substrates by contacting the substrate with a fluorochemical composition comprising: a fluorochemical oligomeric component and an antisoiling component is described. The compositions provide desirable antisoiling properties, as well as oil, water and stain repellency to fibrous substrates.
摘要:
The invention pertains to a fiber comprising 0.5-30 wt.% based on the weight of the fiber of a composition comprising: a) a Bunte salt (A); b) a polysulfide compound (B) comprising the moiety -[S]n- wherein n = 2-6; and c) sulfur or a sulfur donor (C). Preferably the polysulfide compound has the formula: (I) wherein n = 2-6; R is independently selected from hydrogen, halogen, nitro, hydroxyl, C1-C12 alkyl or alkoxyl or aralkyl; The invention further relates to a vulcanization process for making a fiber- elastomer composition comprising the step of vulcanizing: (a) 100 parts by weight of at least one natural or synthetic rubber; (b) 0.1 to 25 parts by weight of an amount of sulfur and/or a sulfur donor, to provide the equivalent of 0.1 to 25 parts by weight of sulfur; and (c) 0.1 to 20 parts by weight of said fiber.
摘要:
A metal chelate-forming fiber which comprises a synthetic fiber and at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acids reactive with a glycidyl group, aminocarboxylic acids, thiocarboxylic acids, and phosphoric acid and incorporated into the molecules of the fiber through a crosslinking reactive compound having a reactive double bond and a glycidly group in the molecule. This chelate-forming fiber has the excellent ability to trap harmful heavy metal ions and the like and can be inexpensively produced by a simple and safe method.
摘要:
A new fibrous chelate-forming material prepared by introducing specified acyl groups of general formulae (1) and (2) into fiber molecules to impart the function of forming a chelate with a metal to the molecules; a new process for thus producing the chelate-forming material; a process for sequestering with the fibers thus treated; and filters produced from the chelate-forming fibers and capable of removing insoluble impurities and metal ions from a fluid at the same time. In said formulae, symbols are each as defined in the description.
摘要:
A method for treating proteinaceous materials that contain disulfide or polysulfide bonds to improve their performance at high relative humidity and when wet. The method comprises annealing the fabric at a temperature in the range of from 70 °C to 160 °C at a regain of between 10 % and 25 % for a period greater than about 10 minutes wherein the fabric is annealed in the presence of a gas wich enhances the disulfide interchange reaction. A further embodiment of the invention comprises annealing the fabric at a temperature in the range of from 70 °C to 160 °C to a regain of between 10 % and 25 % for a period greater than 10 minutes wherein the fabric has at least in part been treated with a liquid which enhances the disulfide interchange reaction. The present method is particularly applicable to keratinous materials such as for example wool, wool with reduced crystallinity, mohair, regenerated protein, or mixtures thereof.
摘要:
The invention relates to a method for treatment of cellulose-based material comprising a coupling step and a hydrophobization step. The coupling step comprises the provision of a coupling solution comprising titanium(IV) isopropoxide (TTIP) or a basic solution of zinc oxide and the immersion of the cellulose-based material into the coupling solution. The following hydrophobization step comprises the provision of a hydrophobization solution comprising a hydrophobic compound and the immersion of the cellulose-based material in the hydrophobization solution, yielding a hydrophobic cellulose-based material, followed by drying of the hydrophobic cellulose-based material. According to a second aspect of the invention a cellulose-based material is provided characterized by its omniphobic properties, a cellulose-TTIP hybrid layer and/or ZnO hybrid layer.