摘要:
Embodiments of the present disclosure relate generally to cooling fabrics having an array of cooling elements coupled to a base fabric, and in particular to methods and fabrics that utilize an array of cooling elements coupled to a base material to absorb heat while also maintaining desired properties of the base material. In some embodiments, the cooling elements may include a cooling gel or polymer or a phase change material, and the cooling elements may undergo a chemical or physical change when exposed to moisture, thereby absorbing heat.
摘要:
A process for grafting polymers onto or within a substrate material is disclosed. The process includes exposing the substrate to a supercritical fluid composition including one or more aliphatic cyclic polyesters and a catalyst.
摘要:
A solution for forming a graft substrate containing a graft initiator, a catalyst for activating the graft initiator, a polymerizable silicon-containing material, and at least two additional prepolymers, each of the silicon-containing material and the prepolymers which includes a functional group for reaction with an activated site on the substrate for grafting a copolymer thereto or with an activated site on the grafted copolymer. The treated fiber exhibits excellent crockfastness, color fastness, and abrasion resistance, strength, and has a soft hand. The composition is optimized for printed and unprinted cotton and poly-cotton. In one embodiment, the treated cotton is stretchable and resilient. In another embodiment method of printing on cotton is included.
摘要:
A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminodicarboxylic acids, aminocarboxylic acids, thiocarboxylic acids and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a natural fiber or regenerated fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. There are also disclosed a method of capturing metal ions using the fiber and a metal chelate fiber which can effectively make use of the characteristics of the metals and can be easily discarded or incinerated.
摘要:
In the fluorinated cellulosic material obtained by a method for fluorinating a cellulosic material by reacting a cellulosic material selected from the group consisting of cellulose material and lignocellulose material with at least one fluorine-containing compound selected from the group consisting of fluorine-containing olefin compound, fluorine-containing acrylate compound and fluorine-containing methacrylate compound in an organic solvent in the present of a catalyst, not only the surface but also the inside of the cellulose and/or lignocellulose materials are modified and high performance of the cellulose and/or lignocellulose materials is realized.
摘要:
Woven or knitted goods of cellulosic fibers grafted with hydrophilic vinyl monomers, having excellent hygroscopicity and being well wearable; woven or knitted goods of cellulosic fibers grafted with hydrophilic vinyl monomers, having a shrinking percentage of 2 % or less after washing, and being excellent in configurational stability; and shrinkproof woven or knitted goods of a combination of polyester fibers with cellulosic fibers. The grafting process comprises impregnating woven or knitted goods with an aqueous solution containing a hydrophilic vinyl monomer and a polymerization initiator, followed by heat treatment and washing. The configurational stability is imparted to the goods by cross-linking cellulosic fibers before, during or after the grafting.
摘要:
Au moins certains greffons du matériau polymérique greffé selon l'invention sont constitués de motifs phosphatés de formule générale :
dans laquelle R₁ est H ou un alkyle, R₂ un alkylène, un oxyde et/ou polyoxyde d'alkylène et R₃⁺ et R₄⁺ sont soit distincts et choisis parmi H⁺, des ions métalliques monovalents, des cations comportant N⁺, soit confondus, R₃R₄²⁺ étant un ion métallique divalent. Les utilisations de ce matériau sont multiples : comme échangeur d'ions à pH large, R₃⁺ et R₄⁺ étant H⁺ ; comme antiseptiques, R₃⁺ et R₄⁺ étant des ions métalliques à activités antiseptiques comme Ag⁺, Zn²⁺, Cu²⁺, ou des ammoniums quaternaires ou la chlorhexidine ; comme substitut osseux, R₃R₄²⁺ étant Ca²⁺; comme composite sans liant, le taux de greffage étant au moins de 20%. Le matériau polymérique de départ est par exemple à base de polypropylène, de cellulose ou de soie. De préférence le procédé consiste à greffer le matériau à l'aide d'un ester éthylénique de l'acide phosphorique de formule générale :
摘要:
A process for graft-polymerizing vinyl monomers onto a cellulose fibre material, by reacting by a fibrous carboxymethyl cellulose peroxide having a degree of substitution for the peroxide groups from 0.02 to 0.11, with a vinyl monomer in an aqueous medium in the presence of a ferrous iron compound at a temperature from 20 to 95 °C.