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    Process to improve resistance to stains on fibres and derived products
    2.
    发明授权
    Process to improve resistance to stains on fibres and derived products 失效
    改善对纤维和衍生产品上的污渍抗性的方法

    公开(公告)号：US5738688A

    公开(公告)日：1998-04-14

    申请号：US687403

    申请日：1996-08-02

    Applicant: Armand De Lathauwer

    Inventor： Armand De Lathauwer

    IPC: D06M13/238 ,  D06M15/41 ,  D06P1/56 ,  D06P1/653

    CPC classification number: D06P1/56 ,  D06M13/238 ,  D06M15/412 ,  D06P1/6533 ,  Y10T428/2915 ,  Y10T442/2279

    Abstract: The invention consists of a process to improve the resistance to stains on fibres, processed or not, finished or not on the basis of dyeable natural or synthetic fibres, in particular polyamide. According to the invention the fibres are treated with a solution containing tannic acid and a condensation product of a sulphonated phenol- or naphtol-derivate with an aldehyde. The treatment can be made before, during or after the dyeing process. The treatment is done in an acid medium.

    Abstract translation: PCT No.PCT / BE95 / 00006 Sec。 371日期：1996年8月2日 102（e）日期1996年8月2日PCT 1995年1月25日PCT PCT。 WO95 / 21955 PCT公开号 日期1995年8月17日本发明包括一种改善对可加工或不加工的纤维上的污渍的抗性的方法，其是以可染色的天然或合成纤维，特别是聚酰胺为基础。 根据本发明，纤维用含有单宁酸和磺化苯酚或萘酚衍生物与醛的缩合产物的溶液处理。 可以在染色过程之前，期间或之后进行处理。 在酸性介质中进行处理。

    Stain-inhibiting agent for dyes with affinity for protonatable nitrogen, compositions containing same and uses thereof
    9.
    发明授权
    Stain-inhibiting agent for dyes with affinity for protonatable nitrogen, compositions containing same and uses thereof 失效
    用于可质子化氮的亲和性染料的染色抑制剂，含有它们的组合物及其用途

    公开(公告)号：US5681604A

    公开(公告)日：1997-10-28

    申请号：US84524

    申请日：1993-06-29

    Applicant: Hualin Li ,  Mongia Gagan ,  C. Paul Malone ,  Robert W. Keown

    Inventor： Hualin Li ,  Mongia Gagan ,  C. Paul Malone ,  Robert W. Keown

    IPC: A23L1/275 ,  D06M13/148 ,  D06M13/165 ,  D06M13/224 ,  D06M13/238 ,  D06M15/03 ,  A23L1/27

    CPC classification number: D06M13/224 ,  A23L5/42 ,  D06M13/148 ,  D06M13/165 ,  D06M13/238 ,  D06M15/03

    Abstract: The staining effect (particularly with respect to the staining of polyamides) of a colorant such as a dye used in foods and beverages is inhibited by a compound of the formula ##STR1## wherein: Z.sup.1, Z.sup.2, and Z.sup.3 are the same or different and are each a bridging radical or a direct bond, Ar.sup.1, Ar.sup.2, and Ar.sup.3 are the same or different and are aromatic or bicyclic radicals; Q is a fused, partially aromatic bicyclic radical, or Q is a carbohydrate residue having a non-repeating structure, in which case m is 1, or Q is a carbohydrate having repeating saccharide units, in which case Q along with its substituents is repeated m times, where m is the number of said repeating saccharide units, but when Q is not a carbohydrate residue, m is 1; R.sup.1, R.sup.2, and R.sup.3 are H or polyhydroxybenzoyl, R.sup.4, R.sup.5 and R.sup.6 are H or the residue of an esterified alcohol,x, y, and z are from 2 to 3, a, b, and c are from 0 to 1, n is from 0 to 1, except that when Q is an oligo- or polysaccharide having terminal saccharide units, n, in the terminal saccharide units, is from 0 to 2, and when n is zero, --Z.sup.1 --Q.sub.m --Z.sup.2 -- is optionally a direct bond. Examples of these stain-inhibiting compounds include tannic acid, green tea extract, epicatechin gallate, and the reaction product of gallic acid and a carbohydrate.

    Abstract translation: 着色剂如食品和饮料中使用的染料的染色效果（特别是关于聚酰胺的染色）被下式化合物抑制：其中：Z1，Z2和Z3相同或不同， Ar1，Ar2和Ar3均相同或不同，为芳族或双环基团; Q是稠合的部分芳族双环基团，或Q是具有非重复结构的碳水化合物残基，在这种情况下m为1，或Q为具有重复糖单元的碳水化合物，在这种情况下Q与其取代基重复 m次，其中m为所述重复糖单元的数目，但当Q不为碳水化合物残基时，m为1; R 1，R 2和R 3为H或多羟基苯甲酰基，R 4，R 5和R 6为H或酯化醇的残基x，y和z为2至3，a，b和c为0至1， n为0〜1，除了当Q为具有末端糖单元的寡糖或多糖时，末端糖单元中的n为0〜2，当n为0时，-Z1-Qm-Z2-为 可选地是直接键。 这些抑菌化合物的实例包括单宁酸，绿茶提取物，表儿茶素没食子酸酯，以及没食子酸和碳水化合物的反应产物。

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