With age, the advancement of technology, everyone's environmental awareness but also to higher and higher, especially in recent years, energy saving and emission reduction became a hot topic in many companies. Due to questions of environmental protection involves not only to the country's energy saving and environmental protection plans, livelihoods and questions also relate to the company. Thus, a large number of environmental protection and energy-saving of dyes have rendered.
Although now reactive dyes is exists dye utilization enough high, and dyeing Shi electrolytic quality consumption volume big, and containing salt colored sewage volume larger and difficult processing, questions, but reactive dyes and other Cellulose fiber with dye compared, has color bright, and wet fastness high, and using convenient and applicability strong, strengths, and structure in the not containing carcinogenic aromatic amine, thus, remains Cellulose fiber with dye of best selected, its price highest.
These years of development in energy saving and emission reduction as the main line, first gathered in "five by three lower short", that is, high solids, high fastness, high levelling and high repeatability, progressive, high energy efficiency, low temperature dyeing, low salt dyeing short, ultra low liquor ratio dyeing and wet steaming series pad.
Higher fixation rate is one of the types of energy saving features. So far, the history is progress of reactive dyes fixation rate in history. Solid-color dyeing progress not only can reduce the rate of drainage load, reducing raw materials, produces power and progress. Over the years, national research is most useful at best, in the introduction of two dye molecules heterogeneous or homogeneous activity base, in particular a halogen-triazine radicals and ethylene alum based two different reactive.
This is because of this reactive dyeing with reactive properties, such as low acid hydrolysis rate, highly acidic hydrolysis stability of bond breaking and excellent washing smaller, high fastness and absorbability and fixation rate. In addition, between two different reactive groups are added and synergistic effect, so that the new characteristics of dye such as a very good resistance to acid hydrolysis and peroxide washes to, a higher fixed rate, wider dyeing temperature scale and very good staining reproducible.