摘要:
The present invention provides a method for treating textile material to confer flame retardant properties, the method comprising the steps of impregnating the material with an aqueous solution of a treatment agent which is a poly (hydroxyorgano) phosphonium compound; drying the impregnated material; curing the dried impregnated material with ammonia to produce a cured, water-insoluble polymer which is mechanically fixed within the fibres of the material; oxidising the cured polymer to convert trivalent phosphorus to pentavalent phosphorus; and washing and drying the material; wherein one or both of steps (d) and (e) result in the co-production of an aqueous effluent; and wherein the conditions are controlled such that the atomic ratio of N:P present on the material increases during step (c) by 0.8 or more.
摘要:
The present invention provides a method for treating textile material to confer flame retardant properties, the method comprising the steps of impregnating the material with an aqueous solution of a treatment agent which is a poly(hydroxyorgano)phosphonium compound; drying the impregnated material; curing the dried impregnated material with ammonia to produce a cured, water-insoluble polymer which is mechanically fixed within the fibers of the material; oxidizing the cured polymer to convert trivalent phosphorus to pentavalent phosphorus; and washing and drying the material; wherein one or both of steps (d) and (e) result in the co-production of an aqueous effluent; and wherein the conditions are controlled such that the atomic ratio of N:P present on the material increases during step (c) by 0.8 or more.
摘要:
The invention provides a method for the treatment of textile material having a threat face and a rear face, so as to obtain a treated material that is flame retardant but also provides protection from molten metal splash on the threat face, the method comprising: a) providing a textile material that comprises cotton and/or wool, and that has a weight of 250g/m2 or more; b) coating the threat face of the material with water repellent; c) applying a flame retardant treatment, comprising a precursor of a flame retardant agent, to at least the rear face of the material; and d) carrying out a fixing process that generates the flame retardant agent in situ and fixes it to the textile material. Also provided is a treated textile material, the textile material having a threat face and a rear face, wherein the textile material comprises cotton and/or wool, and has a weight of 250g/m2 or more, and wherein the rear face of the material has flame retardant agent fixed thereto but the surface of the threat face does not and wherein the threat face of the material is partially or fully coated with water repellent, and an item of protective clothing produced from such material. The material or protective clothing can be used to protect a person from molten metal splash.
摘要翻译:本发明提供了一种用于处理具有威胁面和背面的纺织材料的方法,以便获得阻燃剂的处理材料,但也提供了防止熔融金属溅在威胁面上的保护,该方法包括:a) 提供包含棉和/或羊毛的织物材料,其重量为250g / m 2或更大; b)用防水剂涂抹材料的威胁面; c)将包含阻燃剂前体的阻燃剂处理物施加到所述材料的至少后表面; 和d)进行固定过程,其中将阻燃剂原位生成并固定在纺织材料上。 还提供经处理的纺织材料,纺织材料具有威胁面和后表面,其中纺织材料包括棉和/或羊毛,并且具有250g / m 2或更大的重量,并且其中材料的后表面 具有固定在其上的阻燃剂,但是威胁面的表面不是,并且其中材料的威胁面部分或全部涂覆有防水剂,以及由这种材料制成的防护服的物品。 材料或防护服可用于保护人员免受熔融金属飞溅。
摘要:
Flame retardant cellulosic fabrics having reduced shrinkage are obtained by treatment of fabric with a tetrakis hydroxymethyl phosphonium compound or condensate and then curing with ammonia, followed by treatment involving reaction of the fabric with a non self-condensing methylolamide under aqueous acid conditions.
摘要:
A flame retardant composition comprises at least one cyclic phosphonate ester and at least one phosphono amide. The ester and the amide are present in a ratio by weight of 0.1 to 2:1. A co-curing agent (e.g. urea, ethylene urea or an amino-triazine) may be included. The composition may also contain a non-rewetting agent and/or a softening or conditioning agent. The composition is used for the flame retardant treatment of a fabric by first impregnating the fabric with an aqueous solution of the composition and then heating the impregnated fabric at at least 100.degree. C. and under acid pH conditions.
摘要:
Flame retardant cellulosic fabrics having reduced shrinkage are obtained by treatment involving reaction of fabric with a non self-condensing methylolamide under aqueous acid conditions, followed by treatment of fabric with tetrakis hydroxylmethyl phosphonium compound or condensate and then curing the ammonia.