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    • 3. 发明授权
    • Pretreatment and dyeing of shaped articles derived from wholly aromatic polyamides
    • 从单体芳族聚酰胺衍生的形状文章的预处理和染色
    • US3771949A
    • 1973-11-13
    • US3771949D
    • 1971-11-29
    • MARTIN PROCESSING CO INC
    • HERMES J
    • D06L3/12D06P1/613D06P1/651D06P1/92D06P3/24D06P5/20D06P5/04
    • D06P3/242D06L4/60D06P1/613D06P1/65118D06P1/65131D06P1/90D06P1/928D06P5/2072Y10S8/919Y10S8/925Y10S8/93Y10S8/938
    • Processes are disclosed for the conversion of thermally stable shaped articles derived from wholly aromatic polyamides into level dyeing, deeper dyeing products having improved resistance to discoloration by sunlight or ultraviolet radiation. The processes involve treatment of the shaped articles at elevated temperatures at atmospheric pressure under carefully controlled conditions, and include a pretreatment or conditioning treatment carried in a hot bath of a high boiling organic liquid followed by dyeing the shaped articles in another hot bath cotaining a conventional organic dyestuff dissolved or dispersed in a high boiling organic liquid which may be the same or a different high boiling organic liquid. High boiling glycols, glycol ethers, solvents or solvent blends are especially suitable. Additionally, the hot dyebath preferably includes a further additive to minimize the effect of harmful radiation. The processes may be carried out batchwise or continuously, and may be employed for the treatment of the shaped article in the form of continuous filament yarn, staple yarn, tow, fabric, etc. Special features of the invention are the relatively short time of treatment (especially in the case of continuous operation) thus providing a commercially feasible process and the avoidance of the need for employing solid organic or inorganic pigments for coloring the thermally stable shaped articles.
    • 公开了用于将由全芳族聚酰胺衍生的热稳定成型制品转化成水平染色的方法,具有改善的抗阳光或紫外线辐照变色性的深染色产品。 该方法包括在小心控制的条件下在大气压下在升高的温度下处理成形制品,并且包括在高沸点有机液体的热浴中进行的预处理或调理处理,然后在成型制品的另一个热浴中染色常规的 溶解或分散在高沸点有机液体中的有机染料可以是相同的或不同的高沸点有机液体。 高沸点二醇,二醇醚,溶剂或溶剂共混物是特别合适的。 此外,热染浴还优选包括另外的添加剂以最小化有害辐射的影响。 该方法可以分批或连续地进行,并且可以用于以连续长丝纱,短纤纱,丝束,织物等形式的成型制品的处理。本发明的特征是相对较短的处理时间 (特别是在连续操作的情况下),因此提供了商业可行的方法,并且避免了使用固体有机或无机颜料来着色热稳定成型制品的需要。