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Ultra-high substitution carboxymethyl cellulose sodium and its preparation method and application

A technology of sodium carboxymethyl and cellulose, applied in the application, food preparation, chemical instruments and methods, etc., can solve the problems of incomplete alkalization etherification, unsatisfactory product performance indicators, low production efficiency, etc., and achieve excellent results. , Superior suspension stability, the effect of improving acid resistance

Inactive Publication Date: 2008-08-13
SHANDONG YITENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the existing technology, in order to meet the demand for the quality of cellulose products in today's market, Shandong Yiteng Chemical Co., Ltd. has continuously innovated the process and formula on the basis of the traditional preparation process of sodium carboxymethyl cellulose, using The technical process of spray immersion reaction and high-temperature mist stirring overcomes the technical problems of incomplete alkalization and etherification, substandard product performance indicators, and low production efficiency.

Method used

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  • Ultra-high substitution carboxymethyl cellulose sodium and its preparation method and application
  • Ultra-high substitution carboxymethyl cellulose sodium and its preparation method and application
  • Ultra-high substitution carboxymethyl cellulose sodium and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Carry out following steps successively and carry out the preparation of extra-highly substituted cellulose carboxymethyl sodium:

[0031] (1) inject 4.8 tons of composite solvent (composed of 71%-87% isopropanol, 10%-20% ethanol, 3%-9% water) into the reactor;

[0032] (2) The reaction kettle was heated to 20°C, vacuumed, the manhole cover was opened, 400kg of caustic soda was put in, the temperature was raised to 70°C, and the temperature was continuously stirred for 20 minutes;

[0033] (3) Then lower the temperature to 22°C, vacuumize, open the manhole cover, put in 540kg of refined cotton, keep the constant temperature at 22°C, and continuously stir for 90 minutes;

[0034](4) Throwing 430 kg of chloroacetic acid with a concentration of 96.5% into the reactor, constant temperature at 28° C., stirring continuously for 40 minutes, then raising the temperature to 55° C., performing etherification for the first time at a constant temperature, and etherification at a con...

Embodiment 2

[0040] Carry out following steps successively and carry out the preparation of extra-highly substituted cellulose carboxymethyl sodium:

[0041] (1) 7.8 tons of composite solvents are injected into the reactor;

[0042] (2) The reaction kettle was heated to 20°C, vacuumed, the manhole cover was opened, 430kg of caustic soda was put in, the temperature was raised to 70°C, and the constant temperature was continuously stirred for 20 minutes;

[0043] (3) Then lower the temperature to 22°C, vacuumize, open the hole cover, put in 580kg of refined cotton, keep the temperature at 28°C, and stir continuously for 90 minutes;

[0044] (4) 440kg of chloroacetic acid with a concentration of 96.5% was dropped into the reactor, kept at a constant temperature of 30° C., and continuously stirred for 40 minutes;

[0045] (5) Then, the temperature was raised to 60° C., and the first etherification was carried out at a constant temperature for 40 minutes.

[0046] (6) After 40 minutes, 42kg o...

Embodiment 3

[0051] Carry out following steps successively and carry out the preparation of extra-highly substituted cellulose carboxymethyl sodium:

[0052] (1) Inject 6.9 tons of composite solvent in the reactor;

[0053] (2) Heat up the reaction kettle to 20°C, vacuumize, open the manhole cover, put in 420kg of caustic soda, heat up to 70°C, and keep stirring at constant temperature for 20min;

[0054] (3) Then lower the temperature to 22-18°C, vacuumize, open the hole cover, put in 560kg of refined cotton, keep the temperature at 26°C, and stir continuously for 90 minutes;

[0055] (4) 430kg of chloroacetic acid of 96.5% is dropped into the reaction kettle, constant temperature 29 ℃, continuous stirring 40min;

[0056] (5) Then the temperature was raised to 58° C., and the first etherification was carried out at a constant temperature for 40 minutes;

[0057] (6) After 40 minutes, 38kg of lye is sprayed into the reaction kettle by the pressurized pump through the annular porous spray...

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Abstract

The invention discloses a extra highly substituting cellulose carboxymethyl sodium, which comprehensively utilize spraying impregnation and high-temp mist agitation. Charging a proportion of alkali and cellulose material sequentially into complex solvent of isopropanol, ethanol and water to carry out invasive quaternization, fractionally spray residual alkali liquid in mist into the reaction system by pressurization under high-temp agitation, charging etherifying agent to execute etherification for four times, and purifying to get final product. The product is high in degree of substitution, whose substituent distribute equally, has characteristics of high viscosity, high content of sodium, high acid-viscosity ratio. Meanwhile, the product has great heat resistance, great pseudoplastic behavior, and excellent suspension stability, prevent generation of gel particles, can have cooperative synergism with other stabilizer. The product is reduced in dosage, with improved taste and prolonged shelf life.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, and in particular relates to the preparation process of the spray-dipping reaction and high-temperature mist stirring of ultra-highly substituted cellulose carboxymethyl sodium, and the ultra-highly substituted cellulose carboxymethyl sodium prepared by the process is used in petroleum and coatings. , detergents, building materials, textiles, paper, medicine, food and other fields of application. Background technique [0002] With the development of my country's social economy and the improvement of people's living standards, sodium carboxymethyl cellulose has become more and more widely used. It has a wide application space in the food industry, including: it is used as a viscous agent and bulking agent in the processing of jam, syrup, sherbet and hot sauce; it can make the structure uniform, fine and beautiful in the production of snack foods It can prevent the growth of ice crystals when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B11/12A23L1/03A23L1/0534A21D2/36A23B7/154A23B5/14A23L3/3562C09K8/035A23L29/00A23L29/262
Inventor 刘廷盛李坤武家卫
Owner SHANDONG YITENG NEW MATERIAL CO LTD
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