Liquid hydroxyethyl cellulose slurry and preparation method thereof

A technology of hydroxyethyl cellulose and cellulose, which is applied in the field of liquid hydroxyethyl cellulose pulp and its preparation, can solve the problems of strict storage conditions, dust pollution in processing workshops, and affecting product quality, so as to avoid absorption Moist caking, lower production cost, good stability effect

Active Publication Date: 2021-12-10
高密银鹰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this powdery cellulose is likely to cause dust pollution to the processing workshop when it is unpacked and used, and the hydroxyethyl cellulose powder diffused in the air also has the risk of causing a dust explosion
[0005] At the same time, although the traditional hydroxyethyl cellulose powder has the characteristics of long storage time, it has strict requirements on storage conditions. When the storage conditions are not up to standard, the traditional hydroxyethyl cellulose powder is prone to moisture absorption and caking, which seriously affect product quality
And the traditional hydroxyethyl cellulose powder is usually used as a thickener with a single function

Method used

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  • Liquid hydroxyethyl cellulose slurry and preparation method thereof
  • Liquid hydroxyethyl cellulose slurry and preparation method thereof
  • Liquid hydroxyethyl cellulose slurry and preparation method thereof

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Effect test

preparation example Construction

[0034] A preparation method of liquid hydroxyethyl cellulose slurry, comprising the following steps:

[0035] (1) kneading and coating silicone surfactant (auxiliary 1) on the surface of hydroxyethyl cellulose powder to obtain coated hydroxyethyl cellulose;

[0036] (2) Fully disperse and swell the obtained coated hydroxyethyl cellulose and film-forming aid (auxiliary 2) in a high-speed stirred tank, and then add anti-settling agent and bactericide for further swelling and mixing to obtain liquid hydroxyethyl cellulose Ethyl cellulose pulp.

[0037] Further, the coalescent is an alcohol ester compound or an alcohol ether compound.

[0038] Preferably, the alcohol ester compound is alcohol ester lauryl and / or alcohol ester cetyl or dibenzoate and / or dibasic dibenzoate.

[0039] Preferably, the alcohol ether compound is propylene glycol butyl ether or ethylene glycol butyl ether, one or both of which

[0040] Further, the organosilicon surfactant is one of ethylene glycol sil...

Embodiment 1

[0074] A liquid hydroxyethyl cellulose slurry is prepared by the following steps:

[0075] (1) Preparation of hydroxyethyl cellulose powder:

[0076] 1): Sodium hydroxide is dissolved in isopropanol solution to obtain sodium hydroxide solution. The mass ratio of isopropanol to water in isopropanol solution is 85:15, the mass ratio of sodium hydroxide to water in isopropanol solution is 1:5, and the obtained sodium hydroxide solution is kept at 50°C for 1h ;

[0077] 2): Lower the temperature of the sodium hydroxide solution to 15°C, and alkalize the refined cotton powder for 1.5 hours under a nitrogen atmosphere to obtain an alkalized system. The mass ratio of the refined cotton powder to the isopropanol solution is 1:10. The mass ratio of refined cotton powder to sodium hydroxide is 1:0.3, and the particle size of refined cotton powder is 40 mesh;

[0078] 3): Add etherification agent to the obtained alkalization system to carry out the first stage etherification reaction ...

Embodiment 2

[0083] A liquid hydroxyethyl cellulose slurry is prepared by the following steps:

[0084] (1) The preparation of hydroxyethyl cellulose powder adopts the preparation method of Example 1, and the particle size of the hydroxyethyl cellulose powder obtained is 60 mesh.

[0085] (2) Take 5000g of prepared hydroxyethyl cellulose powder and 1500g of polydimethylsiloxane in a stainless steel kneader, knead and coat organosiloxane surfactant on the surface of hydroxyethyl cellulose powder, knead and wrap After coating for 0.5h, coated hydroxyethyl cellulose was obtained.

[0086] (3) Put the obtained coated hydroxyethyl cellulose into a stirring tank, add 6000g of alcohol ester hexadecanite, 700g of organosilicon bentonite, and 50g of Kathon preservative in turn for swelling and mixing for 0.5h to obtain liquid hydroxyethyl cellulose Plain slurry, the solid content of this liquid hydroxyethyl cellulose slurry is 39%.

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Abstract

The invention relates to the field of natural polymer material processing, and provides liquid hydroxyethyl cellulose slurry and a preparation method thereof. The preparation method comprises the steps of kneading the surface of prepared hydroxyethyl cellulose powder, and conducting coating with an organosilicon surfactant to obtain coated hydroxyethyl cellulose; and performing swelling mixing on the obtained coated hydroxyethyl cellulose, a coalescing agent, an anti-settling agent and a sterilizing agent to prepare the liquid hydroxyethyl cellulose slurry. The problems that dust pollution is easily caused to a processing workshop and dust explosion possibly occurs when traditional powdery hydroxyethyl cellulose is used after a bag is opened are solved, the storage condition is relaxed, and use is more convenient and safer. The liquid hydroxyethyl cellulose slurry prepared by the invention has excellent stability, does not have layering and mould growth conditions after 40-day stability test at normal temperature, and has excellent storage performance.

Description

technical field [0001] The invention relates to the field of natural polymer material processing, in particular to a liquid hydroxyethyl cellulose slurry and a preparation method thereof. Background technique [0002] Hydroxyethyl cellulose (HEC), which belongs to nonionic surface active substances, is a water-soluble polymer compound. Because hydroxyethyl cellulose has the functions of thickening, suspending, bonding, floating, film forming, dispersing, water retention and providing protective colloid, hydroxyethyl cellulose has been widely used in coating industry, construction, chemical polymerization, in Medicine and food industry and cosmetics, oil extraction, detergent, household ceramics, electronics, papermaking, printing and other fields. [0003] Chinese patent CN106310356A (disclosure date: January 11, 2017) discloses a hydroxyethyl cellulose powder bioabsorbable adhesive material and a preparation method. The patent uses relatively cheap hydroxyethyl cellulose p...

Claims

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Application Information

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IPC IPC(8): C08J3/09C08B11/08C08L1/28
CPCC08J3/095C08B11/08C08J2301/28
Inventor 张媛媛姚江韬郭文琦刘莉莉马江伟
Owner 高密银鹰新材料股份有限公司
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