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Olefin fiber is a synthetic fiber made from a polyolefin, such as polypropylene or polyethylene.It is used in wallpaper, carpeting, [1] ropes, and vehicle interiors. Olefin's advantages are its strength, colorfastness and comfort, its resistance to staining, mildew, abrasion, and sunlight, and its good bulk and cover.
Batch dyeing (exhaust dyeing) is a method of dyeing a textile material. The method involves the gradual transfer of dye from a dye bath to the textile material in the same piece of equipment. [ 1 ] The various methods of batch dyeing result from the type of machine used in the dyeing process.
In natural dyeing, there are "fast" dye compounds (those that have the necessary molecular structure to form stable chemical bonds with mordants and fibres, and so provide good resistance to fading when washed, exposed to light, or subjected to normal rubbing/abrasion; these are found throughout the historic record), and there are "fugitive ...
Although almost all dyeing can be done in a vat, the term vat dye is used to describe a chemical class of dyes that are applied to cellulosic fibre (i.e., cotton) using a redox reaction as described below. Because of the use of caustic soda, and the very high pH of the dye bath in the dyeing process, wool cannot be dyed using vat dyestuffs.
Chemical resist dyeing is a modern textile printing method, commonly achieved using two different classes of fiber reactive dyes, one of which must be of the vinyl sulfone type. A chemical-resisting agent is combined with dye Type A, and printed using the screenprint method and allowed to dry. A second dye, Type B, is then printed overtop.
' Indonesia Trading Company '), or PPI, is the only Indonesian state-owned trading house. Its business is in export, import and distribution. PPI was formed through the merger of three former so-called "Niaga" companies, state-owned trading companies PT Tjipta Niaga, PT Dharma Niaga and PT Pantja Niaga, on 31 March 2003.
Batik is a dyeing technique using wax resist.The term is also used to describe patterned textiles created with that technique. Batik is made by drawing or stamping wax on a cloth to prevent colour absorption during the dyeing process.
Thionine is a strongly staining metachromatic dye, which is widely used for biological staining. [4] Thionine can also be used in place of Schiff reagent in quantitative Feulgen staining of DNA. It can also be used to mediate electron transfer in microbial fuel cells. [5] Thionine is a pH-dependent redox indicator with E 0 = 0.06 at pH 7.0. Its ...