Continuous oxygen bleaching refining agent and preparation method thereof

Abstract

The invention relates to a continuous oxygen bleaching refining agent and a preparation method thereof. The continuous oxygen bleaching refining agent comprises a rare-earth catalyst, a hydrogen peroxide stabilizer, biodegradable surfactant, Gemini surfactant, hyperbranched surfactant and water. Compared with a conventional refining agent, the continuous oxygen bleaching refining agent has the advantages that the continuous oxygen bleaching refining agent is efficient and environmental friendly and wide in process applicability, the NaOH use amount is lowered by about 40%, the COD value of discharged wastewater is lowered by more than 40%, and the whiteness, capillary effect and breaking strength of fabric treated by the continuous oxygen bleaching refining agent are evidently better.

Description

technical field [0001] The invention relates to a pretreatment auxiliary agent for printing and dyeing and a preparation method thereof, in particular to a continuous oxygen bleaching refining agent and a preparation method thereof. Background technique [0002] Cotton fabrics are favored by consumers for their moisture absorption and air permeability, but cotton fibers contain many natural impurities, which make cotton fabrics yellow in color and poor in water absorption. Therefore, cotton fabrics must be refined for the main purpose of removing natural impurities and bleached for the main purpose of removing natural pigments. The appearance, feel and dyeing performance of the refined and bleached cotton fabrics can be significantly improved, and the wearing performance can be improved. The segmented continuous steaming, scouring and bleaching process used in the conventional scouring and bleaching of cotton fabrics has a long route, high energy consumption, and large sewag...

AI Technical Summary

Problems solved by technology

[0003] At present, the development of refining agents mainly focuses on biological enzyme refining agents and non-biological alkali-resistant refining agents. The key technology of the former lies in the selection and application of scouring enzymes, and the key technology of the latter lies in the selection and application of surfactants. Base (benzene) sodium sulfonate, fatty alcohol polyoxyethylene ether and other series of surfactants, the former is ecological and environmentally friendly, and the refining effect is not good, while the latter is excellent in refining effect, but not environmentally friendly

Such as the Chinese patent CN 102154230 A, the invention relates to the application of a scouring enzyme in the pretreatment of textiles, which is energy-saving and environmentally friendly, but the removal effect on cottonseed hulls is not ideal, and a good refining effect cannot be achieved; another example is the Chinese patent CN 104532556 A, introduced a high alkali-resistant textile refining agent and its preparation method, using sodium alkylsulfonate, fatty alcohol polyoxyethylene ether series surfactants, excellent removal effect on natural impurities and cottonseed hulls, but refining The amount of solvent and NaOH is large, reaching 10 g / L and 30 g / L respectively, resulting in a high COD value of discharged wastewater, which is not conducive to environmental protection

[0004] To sum up, there is currently no scouring agent that is suitable for short-process new processes, satisfies the scouring and bleaching effect and is more environmentally friendly. Therefore, it is of great practical significance to develop a continuous oxygen bleaching scouring agent that meets the above requirements.

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