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Formula of acetate starch and preparation technique thereof

A technology of acetate starch and formulation, which is applied in fiber treatment, textiles and papermaking, etc. It can solve the problems of low production efficiency and low starch DS value, achieve the effect of improving quality and level, excellent size film performance, and meeting process requirements

Active Publication Date: 2009-03-04
西达(无锡)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the DS value of starch is low, and the production efficiency of products with a higher degree of substitution is low, and even the aqueous phase wet method is not feasible at all.

Method used

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  • Formula of acetate starch and preparation technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Feed and add various reagents according to the formula listed in Table 1, and operate according to the following procedures: Feed and stir: add corn starch, caustic soda and alcohol to the material box, and stir for 15 minutes; Sprinkle oxidant: Sprinkle oxidant, the temperature will rise naturally. Control, react under normal pressure conditions for 35 minutes; sprinkle reducing agent: disperse and sprinkle powdered reducing agent to destroy the oxidizing agent in the reaction system, and react for 15 minutes; spray esterification reagent: spray into liquid esterification reagent, react for 65 minutes, during the reaction If the temperature rises above 60°C, use a cooling water pipe to reduce the reaction temperature; steam heating and vacuuming: when the reaction time reaches 70 minutes, use steam to heat to 65°C and continue vacuuming to completely evaporate and recover the alcohol in the material box. Then discharge, sieve, pulverize and mix to complete the whole pro...

Embodiment 2

[0040] Feed and add various reagents according to the formula listed in Table 1, operate according to the following procedures: Feed and stir: add corn starch, caustic soda and alcohol to the material box, and stir for 11 minutes; Sprinkle oxidant: sprinkle oxidant, the temperature will rise naturally. Control, react under normal pressure conditions for 30 minutes; sprinkle reducing agent: disperse and sprinkle powdery reducing agent to destroy the oxidizing agent in the reaction system, react for 15 minutes; spray esterification reagent: spray into liquid esterification reagent, react for 70 minutes, during the reaction When the temperature rises above 60°C, use a cooling water pipe to lower the reaction temperature; steam heating and vacuuming: when the reaction time reaches 60 minutes, use steam to heat to 65°C and continue vacuuming to completely evaporate the alcohol in the material box and recover it by distillation. Discharging, sieving, crushing, and mixing complete the...

Embodiment 3

[0042] Feed and add various reagents according to the formula listed in Table 1, and operate according to the procedure of Implementation 2.

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Abstract

The invention relates to an acetate starch formulation for textile sizing material, and a preparation method thereof. The acetate starch formulation comprises corn starch, caustic soda, oxidizer, reducer, and esterifying reagent, and is characterized in that the acetate starch formulation also comprises alcohol. The preparation method comprises the following steps: adding the corn starch, caustic soda and alcohol into a feed box, and stirring; sprinkling liquid oxidizer, sprinkling powdery reducer in dispersed manner, spraying with liquid esterifying reagent, heating with steam, evacuating, heating with steam to 65 DEG C, and persistently evacuating until the alcohol in the feed box is completely volatilized, distilled and recovered; and discharging, sieving, pulverizing and mixing. The alcohol solvent phase is employed to prepare acetate starch to reduce the production cost. The acetate starch replaces PVA in textile pulp application to acquire good effect, higher substitution degree, and excellent size film performance, and improve the sizing quality and level of subsequent textile sizing. The alcohol solvent phase production does not require water resource to have no waste water treatment.

Description

(1) Technical field [0001] The invention relates to a formula for auxiliary materials in the textile industry and a preparation method thereof, in particular to a formula and a preparation process for acetate starch, a textile sizing material. (2) Background technology [0002] Acetate starch, also known as acetyl starch, is prepared by esterification of natural starch as a matrix with chemical reagents such as chloroacetyl, acetic anhydride, or vinyl acetate. It is a starch derivative and belongs to the second generation of modified starch. Acetate starch has a history of more than 100 years since its inception. For more than 100 years, acetate starch has been widely used in food industry, adhesive industry, paper industry and other fields. [0003] The application of acetate starch in the textile industry began in the 1970s abroad, but it has only been applied in my country for nearly two decades. It is mainly used for sizing polyester / cotton blended yarn and fine cotto...

Claims

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Application Information

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IPC IPC(8): C08B31/04D06M15/11
Inventor 田培善林源杰
Owner 西达(无锡)生物科技有限公司
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