摘要:
A wetting agent, in particular for mercerizing cotton and cotton blend fabrics, which contains(a) sulfates of a fatty alcohol having 6 to 18 carbon atoms,(b) phosphates of a monoalcohol having 4 to 12 carbon atoms,(c) alcohols having 6 to 18 carbon atoms or condensation products thereof with paraformaldehyde,(d) a hydrotropic solubilizing agent and optionally(e) an adduct of an organopolysiloxane and ethylene oxide and/or propylene oxide and/or(f) a complexing agent.The wetting agents are distinguished by great wetting power and low foaming, not only in the course of the mercerization but also in the recovery of liquor from mercerizing washing baths.
摘要:
The method of pretreating pile fabrics with resin at relatively low percentage levels in order to stabilize the appearance (pile shrinkage and distortion) of the pile as affected by a subsequent treatment with liquid ammonia.
摘要:
A process and apparatus for mercerizing circular knitted articles, continuously as well as uniformly to assure that the circular knitted articles can be impregnated uniformly with caustic solution in a predetermined quantity, and the whole parts of the circular knitted articles impregnated with caustic solution are subjected to the timing treatment under an uniform tension, and the circular knitted articles thus treated are subjected to the rinsing treatment efficiently in a short period of time.
摘要:
A method for treating a knitted fabric containing cotton fibers with an alkali hydroxide, which comprises impregnating said fabric with an aqueous solution of an alkali hydroxide while continuously feeding it in the open form in the longitudinal direction, allowing the fabric to shrink in the longitudinal direction, then feeding it to a tenter while giving an overfeed, thereby to hold it to a given width, and then washing the fabric. The knitted cotton fabrics so treated have superior dimensional stability, especially dimensional stability in the widthwise direction, a deep silky luster, a soft bulky hand, and a superior dyeability.
摘要:
Aqueous mercerizing solutions containing alkali metal hydroxide and 0.1 to 5 g/l of a phosphonic acid derivative of the formula
IN WHICH R is aliphatic hydrocarbon radical and X and Y each is hydrogen, an alkali metal ion or a lower aliphatic radical, and the use of these solutions in a process for mercerizing cellulose fibrous material..
摘要:
Methods of recovering waste cellulosic fibers from mixtures of waste cellulosic fibers, waste polyester and/or acrylic fibers, and synthetic, cross-linked resin materials which comprise: heating a mixture of waste cellulosic fibers, waste polyester and/or acrylic fibers, and synthetic, cross-linked resin materials within the range of from about 212* to about 275*F. for a period of from about 3/4 hour to about 5 hours in an aqueous treating solution containing an alkali metal hydroxide and one or more added normally liquid chemical agents such as ketones, alcohols, lactones, and sulfoxides, which initiate the decomposition or solubilization of the waste polyester and/or acrylic fibers and the synthetic, cross-linked resin materials; adding a neutral or alkaline oxidizing agent to the mixture of waste fibers and synthetic, cross-linked resin materials; heating the mixture of waste fibers and synthetic, cross-linked resin materials in the presence of the neutral or alkaline oxidizing agent to complete the decomposition or solubilization of the waste polyester and/or acrylic fibers and the synthetic, crosslinked resin materials; and recovering the waste cellulosic fibers.
摘要:
A method and compositions for imparting flame resistance to exposed surfaces of wood by impregnating the wood with dimethyl(oxiranylmethyl)phosphonate (DMOMP) and a catalyst and then reacting wood surfaces with the DMOMP is described. The catalysts are preferably Lewis acids or Lewis bases. The resulting treated wood products are useful in applications where flame resistance is important.
摘要:
Softener-containing washing agents which, in addition to the customary components of washing agents, contain 0 to 10% by weight of a quaternary ammonium compound and 1 to 30% by weight of a softener system which comprises 10 to 90% by weight of a tertiary amine and 90 to 10% by weight of a crystalline sheet-silicate of the formulaMe.sub.2 Si.sub.x O.sub.2x+1 .multidot. yH.sub.2 Oin which Me denotes an alkali metal ion or a proton, x denotes a number greater than 7, in particular from 7.5 to 23, and y denotes a number smaller than 7 x, in particular smaller than x. In the softener system, the tertiary amine is in a state of adsorption on the alkali metal silicate. The ammonium compounds, which are adsorbed on said silicate, produce a softening effect in the washing agent but on the other hand are compatible with anionic surfactants in the washing agent. produce a softening effect in the washing agent but on the other hand are compatible with anionic surfactants in the washing agent.
摘要:
The invention relates to a process for alkali-dry treating cellulosic fibre goods comprising the steps of(a) treating the goods with an aqueous caustic soda solution of 18.degree.-26.degree. Baume, followed by(b) drying the treated goods under tension without an intermediate rinsing or neutralization step.The aqueous caustic soda solution used in step (a) may further contain a lubricant and wetting agents.