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Cellulose acrylate composite emulsion preparation method

A technology of acrylate and composite emulsion, which is applied to acrylate cellulose acrylate composite emulsion and its preparation. Based on the field of cellulose derivatives, it can solve water resistance, poor adhesion and gloss, increase product cost, and environmental pollution. and other issues, to achieve unique biocompatibility and degradability, low cost, and good physical and chemical stability

Inactive Publication Date: 2007-02-14
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional emulsion polymerization, a certain amount of emulsifier is always added, and the emulsifier remains in the final coating film, which often brings adverse effects, such as poor water resistance, adhesion and gloss, and the price of emulsifier is usually higher. Expensive, adding emulsifiers will increase the product cost and cause a certain degree of pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for preparing the above-mentioned cellulose acrylate composite emulsion, which is prepared by an emulsion polymerization method, and is realized through the following steps:

[0022] 1) Mix methyl methacrylate accounting for 5% to 25% of the total amount of the emulsion, butyl methacrylate accounting for 5% to 25% of the total amount of the emulsion and acrylic acid accounting for 0.05% to 5% of the total amount of the emulsion Uniform; the percentage of methyl methacrylate can be selected as 6%, 10%, 15%, 22%, the percentage of butyl methacrylate can be selected as 7%, 11%, 14%, 21%, acrylic acid The percentage can be selected as 0.1%, 0.9%, 1.8%, 2.5%, 3.8%, 4.3%, 4.9%,

[0023] 2) Dispersing 0.1% to 3% of the cellulose ether in the total weight of the emulsion and 0.01 to 0.5% of the acidic catalyst in the total weight of the emulsion into water accounting for 50 to 90% of the total weight of the emulsion, wherein the percentage of cellulose ethe...

Embodiment 2

[0027] Weigh 50g of methyl methacrylate, 50g of butyl methacrylate and 2g of acrylic acid and mix them into a monomer solution, add 300g of water into a 500mL four-neck flask, add 3g of carboxymethylcellulose while stirring, and mix After uniformity, add 0.3g disodium hydrogen phosphate, heat up to 60°C, add 0.5g ammonium persulfate, heat up to 86°C, add monomer solution dropwise, dropwise for 4 hours, keep warm for 1 hour, cool to room temperature, Filtrate the material to obtain the cellulose acrylate composite emulsion, and the performance results of the emulsion are shown in the attached table.

Embodiment 3

[0029] The same formula and process as in Example 1 were used to prepare the cellulose acrylate composite emulsion, but the input amount of carboxymethyl cellulose was 5 g to obtain the cellulose acrylate composite emulsion. The performance results of the emulsion are shown in the attached table.

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PUM

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Abstract

The invention relates to a process for preparing cellulose methyl acrylate composite emulsion by employing emulsion polymerization, which comprises, mixing methyl methacrylate 5-25wt% of total weight of emulsion, n-butyl methacrylate 5-25wt% of total weight of emulsion and acrylic acid 0.05-5wt% of total weight of emulsion, then dispersing cellulose ether 0.1-3wt% of total weight of emulsion and acid catalyst 0.01-0.5wt% of total weight of emulsion into water 50-90wt% of the total weight of emulsion, agitating homogeneously, elevating temperature, charging peroxodisulfate as initiating agent, heating continuously, dripping mixed solution obtained at the beginning, thermal insulating 0.5-2 hours, cooling down to room temperature and filtering.

Description

technical field [0001] The invention relates to an acrylate composite emulsion and a preparation method thereof, in particular to a cellulose acrylate composite emulsion based on cellulose derivatives and acrylate and a preparation method thereof. Background technique [0002] Cellulose is the most abundant natural polymer on the earth. It contains about 10-25% in herbaceous plants, 40-53% in wood, 60-85% in bast fibers such as flax, and up to 90% in cotton. %. Cellulose is also the basic component of plant cells. The carbon constituting cellulose in natural organisms accounts for about 40%, and the cellulose produced through photosynthesis reaches more than 100 billion tons every year. It can be said that cellulose is an inexhaustible renewable organic resource in nature. . [0003] With the decline of natural resources on the earth, especially oil and coal reserves in recent years, people pay more and more attention to using biomass resources as raw materials and adopti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08F220/16C08F2/44C08F2/22
Inventor 储富祥陈日清王春鹏林明涛刘玉鹏
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY