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Novel environment-friendly high-molecular polymerized emulsion and preparation method thereof

A technology of polymer polymerization and natural polymer, which is applied in the field of preparation of new environmentally friendly polymer emulsions, can solve problems such as environmental pollution, human toxicity and side effects, and achieve environmental pollution reduction, wide application, and excellent chemical stability. Effect

Inactive Publication Date: 2013-01-30
QINGDAO TSINGUNION HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the film-forming aids and antifreeze will volatilize after the emulsion is formed into a film, which will not affect the characteristics of the coating film, but the film-forming aids and antifreeze that volatilize into the air will pollute the environment and cause certain side effects to the human body. harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) 180kg of cornstarch, water content is 14wt%, 500kg of deionized water is added in the reaction kettle equipped with mechanical stirring, stirs evenly, adds 0.6kg of biological enzyme, heats up to 100 ℃, reacts for 30 minutes;

[0031] (2) Adjust the temperature of the natural polymer emulsifier to be 65° C., add 0.1 kg of ammonium persulfate, 0.1 kg of sodium bisulfite, add 5 kg of styrene, 15 kg of acrylonitrile, and 5 kg of butyl acrylate mixed monomers, and react for 15 minutes. Obtain a polymer dispersion in micellar state;

[0032] (3) Add the mixed monomer and initiator dropwise from the head tank to the reactor under stirring, keep the temperature at 65°C, and drop it in 3 hours, wherein the mixed monomer is 70kg of styrene, 93kg of butyl acrylate, and 78kg of acrylonitrile. 20kg of acrylic acid, wherein the initiator is the combination of ammonium persulfate aqueous solution and sodium bisulfite, the preparation method of ammonium persulfate aqueous solution...

Embodiment 2

[0035] (1) 105kg of cellulose and 450kg of deionized water were added to a reaction kettle equipped with mechanical stirring, stirred evenly, 5.10kg of sodium persulfate was added, the temperature was raised to 70°C, and the reaction was carried out for 15 minutes;

[0036] (2) to reactor, add methyl methacrylate 15kg, isooctyl acrylate 10kg mixed monomer, react 30 minutes, obtain the polymer micelle dispersion liquid of transparent bluish;

[0037] (3) Add the mixed monomer and initiator dropwise from the head tank to the reaction kettle under stirring, keep the temperature at 70°C, and drop it in 3 hours, wherein the mixed monomer is 152kg of methyl methacrylate, 100kg of isooctyl acrylate, 19.5kg of hydroxypropyl methacrylate, 5.9kg of acrylic acid, wherein the initiator is an aqueous solution of sodium persulfate, and the preparation method is: 2kg of sodium persulfate+150kg of deionized water are stirred and dissolved completely;

[0038](4) logical cold water is cooled t...

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Abstract

The invention discloses a novel environment-friendly high-molecular polymerized emulsion and a preparation method thereof. The polymerized emulsion comprises, by weight, 5 to 40% of a natural high-molecular polymer, 50 to 90% of a monomer, 0.02 to 5% of a modifier and 0.2 to 0.5% of an initiator, with the balance being water. According to the invention, the modifier is used to treat the high-molecular polymer to obtain a high-molecular modification compound having dispersion and emulsification effects during emulsion polymerization and used as a reducing agent for a redox initiation system. The compound and proper proportioned components consisting of the monomer, a water-soluble peralcohol and / or other water-soluble reducing agent undergo polymerization under certain conditions, so a light blue transparent polymer particle (micelle) dispersion system can be obtained, and soap-free polymer emulsions with different particle sizes and different core-shell structures can be synthesized. The polymerized emulsion provided by the invention has the characteristics of capacity of film forming at room temperature, excellent stability, nontoxicity, no odor, high activity and the like and can be widely used in fields like papermaking, printing, weaving, coatings, water-based paints, etc.

Description

technical field [0001] The invention relates to a preparation method of a novel environment-friendly polymer emulsion, in particular to a novel environment-friendly polymer emulsion. Background technique [0002] With the rapid development of the economy, the level of urbanization and the continuous improvement of the people's production level, various functional chemicals have gradually entered people's lives, and many of these functional chemicals appear in the form of polymerized emulsions. The basic formula of traditional emulsion polymerization consists of four components: monomer, water, water-soluble initiator and water-soluble emulsifier. The use of emulsifiers for emulsion polymerization requires strict process control and increases the difficulty of production control. Even some mature small-scale products cannot adapt to changes in production conditions and are difficult to convert to large-scale production; This kind of emulsifier stabilizes the latex. After pol...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F289/00C08F251/02C08F4/40C08F2/22
Inventor 于善普陈兵吴艳华孟祥伏张春刚
Owner QINGDAO TSINGUNION HIGH TECH CO LTD
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