Imparting crease resistance to fibrous silk structures through treatment with gaseous formaldehyde
    7.
    发明授权
    Imparting crease resistance to fibrous silk structures through treatment with gaseous formaldehyde 失效
    通过使用气态甲醛治疗纤维丝状结构,防止耐药性

    公开(公告)号:US3677694A

    公开(公告)日:1972-07-18

    申请号:US3677694D

    申请日:1970-11-10

    CPC classification number: D06M13/127 D06M15/423 D06M15/429

    Abstract: A METHOD OF FINISHING SILK FIBROUS STRUCTURE WHICH COMPRISES TREATING THE SILK FIBROUS STRUCTURE WITH A SOLUTION CONTAINING AT LEAST ONE COMPOUND SELECTED FROM THE FOLLOWING GROUP: (A) UREA OF THIOUREA; (B) A MIXTURE OF FORMALDEHYDE-CONTAINING LOW GRADE CONDENSATION RESIN AND UREA OR THOUREA; (C) ALIPHATIC, ALICYLIC OR AROMATIC COMPOUNDS HAVING AT LEAST TWO HYDROXYL GROUPS AND HAVING MOLECULAR WEIGHT OF NO MORE THAN 400; (D) ALIPHATIC AMINES HAVING AT LEAST TWO GROUPS SELECTED FROM HYDROXYL AND AMINO AND HAVING MOLECULAR WEIGHT OF NO MORE THAN 400; DRYING THE TREATED FIBROUS STRUCTURE UNTIL THE MOISTURE CONTENT OF SAID FIBROUS STRUCTURE REACHES NO MORE THAN 10% AND THEN, TREATING SAID FIBROUS STRUCTURE WITH GASEOUS FORMALDEHYDE AT A TEMPERATURE OF NO LESS THAN 100*C. DURABLE AND HIGH CREASE-RESISTANCE IS OBTAINED WITHOUT ADVERSLY AFFECTING EXCELLENT PROPERTIES PECULIAR TO SILK FIBROUS STRUCTURE.

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