Enzyme additive for cotton knitted fabric and preparation method and application thereof

Abstract

The invention discloses an enzyme additive for a cotton knitted fabric and a preparation method and an application thereof, and belongs to the technical field of pretreatment processes and formulas in the cotton knitted fabric dyeing and finishing industry. The enzyme additive for a cotton knitted fabric is characterized by comprising the following components by weight percentage: 40-75 of neutral cellulose, 6-15 of deoxyenzyme, 7-30 of protective agent and 8-20 of enzyme activity promoter. The enzyme additive for a cotton knitted fabric is applied to the deoxidizing, polishing dyeing one-bath process of cotton knitted fabrics; and with the method, enzyme activity is kept stable, the technological steps are shortened, the energy consumption is reduced, and the waste water discharge is reduced.

Description

Technical field: [0001] The invention relates to an enzyme additive for cotton knitted fabrics, a preparation method and application thereof, and belongs to the technical field of pretreatment process formulations in the dyeing and finishing industry of cotton knitted fabrics. Background technique: [0002] The traditional cotton knitted fabric dyeing and finishing process is mainly batch processing. The current processing flow is boiling and bleaching→biological enzyme deoxidation→biological polishing→dyeing→finishing. Wherein, the deoxygenase is catalase, and the optimum pH value is neutral. Acid cellulase is often used in polishing treatment, and the best pH value is in the range of 4.5 to 4.8. The initial pH value of reactive dyes is neutral, and the pH value after adding soda ash to fix the color is 10 to 11. Due to the pH value requirement In order to avoid the differences in the above, oxygen removal, polishing and dyeing need to be carried out in separate baths,...

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Problems solved by technology

However, the pH value of the process before and after washing does not change much, only a difference of 0.5. Adding a buffer not only has little effect, but also tends to increase the concentration of sodium ions in the system. According to the ratio of the above-mentioned patent description, the content of sodium ions If it exceeds 10%, part of the enzyme protein will be precipitated and inactivated, so the stability of the formula is not enough. Sodium benzoate only plays a role in antisepsis. To achieve the real stability effect, it needs to be compounded with additives.

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