G Tosi, Tanatex Develop Low-Temperature Bleaching Process
Italy-based G. Tosi S.p.A. — a finisher of 100-percent cotton yarn and knitted fabrics — and the
Netherlands-based Tanatex Chemicals B.V. — a manufacturer of textile pretreatment, dyeing,
printing, coating and finishing chemicals - have co-developed Be Green, a new low-temperature
bleaching process for mercerized cotton.
The process, which allows bleaching at 75°C, is based on a low-temperature peroxide activator and uses specially selected dispersants and surfactants as well as the bleaching activator. The activator controls the peroxide decomposition to help shorten the process for achieving the required whiteness. Tosi reports that the system simplifies the process cycles for mercerized yarn. Advantages include reduced total time and water consumption, as well as a 50-percent reduction in carbon dioxide emissions. The process also reduces chemical oxygen demand levels in the effluent by 25 percent. Be Green is suitable for whites to be dyed as well as for full white bleaching including optical bleaching agents.
October/November/December 2010
The process, which allows bleaching at 75°C, is based on a low-temperature peroxide activator and uses specially selected dispersants and surfactants as well as the bleaching activator. The activator controls the peroxide decomposition to help shorten the process for achieving the required whiteness. Tosi reports that the system simplifies the process cycles for mercerized yarn. Advantages include reduced total time and water consumption, as well as a 50-percent reduction in carbon dioxide emissions. The process also reduces chemical oxygen demand levels in the effluent by 25 percent. Be Green is suitable for whites to be dyed as well as for full white bleaching including optical bleaching agents.
October/November/December 2010
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G Tosi与Tanatex合作开发低温漂白加工工艺
意大利Tosi公司是一家从事100%棉纱线和针织面料加工的企业，它与荷兰Tanatex化工公司-这是一家纺织品预处理、染色、印花和后整理化工产品生产商¬-起合作，共同开发出Be Green，一
种新的丝光棉低温漂白加工工艺。
这种工艺可以在75摄氏度时进行漂白，它基于一种低温过氧化物催化剂，使用特别挑选的分散剂和表面活性剂，以及漂白催化剂。这种催化剂控制过氧化物的还原，以便缩短处理过程以达到所需的漂白要求。T
osi表示这一系统简化了丝光纱线的加工周期。优势包括缩短总体时间及水的消耗，并减少了大约50%的二氧化碳排放。这一工艺同时也减少了废水中大约25%的化学需氧量。Be Green适合染成白色的处理，以
及全白漂白加工，包括光学漂白剂。