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    • 3. 发明授权
    • Continuous pretreatment of cellulosic textile material
    • 纤维素纺织材料的连续预处理
    • US5820636A
    • 1998-10-13
    • US537750
    • 1995-11-15
    • Heinz-Dieter AngstmannDieter BassingPeter Freyberg
    • Heinz-Dieter AngstmannDieter BassingPeter Freyberg
    • D06L1/14D06L3/02
    • D06L3/02D06L1/14D06L3/023
    • A process for the continuous pretreatment of cellulosic textile material comprises a) a precleaning step wherein the treatment bath used comprises customary surfactants and other customary auxiliaries with or without customary enzymes as desizing agents and has a pH of from 5 to 11, and, after washoff and rinse, b) a bleaching step with hydrogen peroxide in an alkaline-aqueous liquor which comprises customary surfactants and other customary auxiliaries, wherefor the treatment bath of (a) additionally comprises from 1 to 10% by weight, based on the weight of the textile material, (i) either of an aminopolycarboxylic acid, of a hydroxyalkyl- or amino-phosphonic acid, of a polycarboxylic acid, of a polyhydroxycarboxylic acid or of an inorganic polymetaphosphate, or a mixture thereof, as complexing agent for polyvalent metal ions, or (ii) of a water-soluble polymer derived from 40 to 100% by weight of monoethylenically unsaturated mono- or dicarboxylic acids or anhydrides, or a mixture thereof, and has a K value of from 8 to 80, as dispersant, or(iii) a mixture of components (i) and (ii) in a weight ratio of from 10:1 to 1:10.
    • PCT No.PCT / EP94 / 01507 Sec。 371日期:1995年11月15日 102(e)1995年11月15日日期PCT PCT 1994年5月10日PCT公布。 公开号WO94 / 28228 PCT 日期1994年12月8日一种用于纤维素纺织材料的连续预处理的方法包括a)预清洗步骤,其中使用的处理浴包括常规表面活性剂和具有或不具有常规酶作为脱浆剂的其它常规助剂,并且具有5至11的pH ,并且在洗涤和冲洗之后,b)在含有常规表面活性剂和其它常规助剂的碱性水溶液中用过氧化氢进行漂白步骤,其中(a)的处理浴另外包含1至10重量%的基于 关于纺织材料的重量,(i)多羧酸,多羟基羧酸或无机聚偏磷酸盐或其混合物的氨基多羧酸,羟基烷基或氨基膦酸中的任一种作为络合剂 对于多价金属离子,或(ii)衍生自40至100重量%的单烯属不饱和单羧酸或二羧酸或酸酐的水溶性聚合物, 或其混合物,并且具有8至80的K值作为分散剂,或(iii)组分(i)和(ii)的混合物,其重量比为10:1至1:10。
    • 4. 发明授权
    • Desizing of textiles consisting of or containing cellulose
    • 纺织品的脱浆或由纤维素组成
    • US4344764A
    • 1982-08-17
    • US23357
    • 1979-03-23
    • Wilfried KotheHeinz-Dieter Angstmann
    • Wilfried KotheHeinz-Dieter Angstmann
    • D06L1/14D06L1/06D06M11/04D06M15/38
    • D06L1/14
    • In addition to the very time-consuming enzymatic and hydrolytic desizing processes, oxidative degradation of starch size by means of persulfate, to render the starch water-soluble, is conventionally practised. Because of the chemical similarity between starch and cellulose, oxidative degradation of the cellulose is unavoidable in this desizing process. The invention overcomes this problem by breaking up the macromolecules of the starch into dispersible fragments by means of such small amounts of persulfate that neither is the starch made water-soluble nor is the cellulose significantly damaged, the dispersants employed for the fragments being relatively oxidation-stable polymers of unsaturated carboxylic acids.
    • 除了非常耗时的酶促和水解退浆方法之外,常规地进行通过过硫酸盐的淀粉尺寸的氧化降解以使淀粉成为水溶性的。 由于淀粉和纤维素之间的化学相似性,在该退浆过程中纤维素的氧化降解是不可避免的。 本发明克服了这个问题,即通过少量的过硫酸盐将淀粉的大分子分解成可分散的片段,淀粉也不溶于水,也不是纤维素显着损坏,用于片段相对氧化的分散剂, 稳定的不饱和羧酸的聚合物。