섬유

sequential oxidative and reductive bleaching of pigmented and unpigmented fibers. patent application

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 318
two processes of the instant invention which employ mordanting utilize the initial steps of: bringing both pigmented and unpigmented fibers into contact with ferrous ions under conditions which provide adsorption of the ferrous ions by the pigmented and unpigmented fibers; removing (as for example by rinsing) a portion of the ferrous ions from the pigmented and unpigmented fibers with at least a portion of the ferrous ions remaining on the pigmented fibers, and; contacting the pigmented and unpigmented fibers with hydrogen peroxide under conditions which provide oxidative bleaching of both the pigmented and unpigmented fibers, including oxidative bleaching of the pigmented fibers by interaction of the hydrogen peroxide with ferrous ions remaining on the pigmented fibers, to produce bleached fibers in contact with unspent hydrogen peroxide
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