Extreme climate, environmental pollution, the environmental problems we are facing are becoming more and more prominent. On February 23, 2021, the fifth United Nations Environment conference closed in Nairobi, the capital of Kenya, delegates called on governments and enterprises to take effective measures to protect the environment and reduce carbon emissions. Textile industry is an industry with high energy consumption and high pollution, how to achieve the goal of energy saving and emission reduction is the obligation and responsibility of all textile enterprises.
The traditional textile pre-treatment process is mostly carried out under the condition of high temperature and strong alkali, which has high energy consumption and large pollutant emission. Therefore，it’s significant to reduce the temperature in bleaching process by using catalysts that have high efficiency in catalytic activity. Recently, a new type of Low-temperature catalyst has been developed by Shandong Zhongkang Advanced Dyeing Printing Technology Research Institute(ADPTRI).
This catalyst is an enzyme-mimetic catalyst compounded with special low-temperature effective scouring agent that enable the hydrogen peroxide bleaching take place at a lower temperature. Bleaching with the catalyst at 75-80℃ can achieve sufficient degree of whiteness and wettability for dyeing and full bleach and meantime reduce energy consumption, lower strength loss and weight loss of cotton fabrics. The action mechanism of the catalyst is as follows: the complexes formed by manganese with a series of saltren ligands and their substituents have strong activity. the metal atomic valence increases after forming complexes. When used in hydrogen peroxide bleaching, it is conducive to the formation of strong oxidizing substances and can catalyze hydrogen peroxide bleaching.
The catalyst has the following features and benefits:
- Reduced strength loss and weight loss of cotton fabrics.
- Reduced energy and water consumption
- Reduced processing time and overall bleaching process cost
- Softer hand feel
- Milder reaction giving fabric less tendency to chafe and crease mark
- Save at least 25% of total bleach processing cost
- Better bleaching and dyeing evenness for package yarn
“This catalyst can reduced the bleaching temperature of hydrogen peroxide from 98 ~ 100 ℃ to 60-80 ℃, so as to achieve the goal of energy saving and emission reduction”says Professor Mao, Director of Shandong Zhongkang Advanced Dyeing Printing Technology Research Institute “energy saving and emission reduction requires innovation and collaboration, ADPTRI contributes by developing innovative technologies that realize low temperature bleaching of fabrics”.
Today, ADPTRI launches this chemical auxiliaries for textiles low temperature bleaching agent PRE-1101, we will further commit ourselves to environmental protection, energy conservation and emission reduction.
