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A polymer emulsifier, emulsifier technology, applied in chemical instruments and methods, chemical/physical processes, transportation and packaging, etc., to achieve the effect of simple process synthesis, good wrapping effect, and good emulsification effect
Inactive Publication Date: 2018-12-18
中化化工科学技术研究总院有限公司 +1
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[0004] In order to solve the technical problems of solvents and small molecule emulsifiers used in the synthesis of polymer emulsifiers, the invention provides a polymer emulsifier and a preparation method thereof
Method used
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Embodiment 1
[0027] A kind of polymer emulsifier, is made up of following components by weight:
[0030] Step 1: Add water, acrylic acid, octadecyl acrylate, Pemulen TR-1, and ammonium persulfate into a reaction kettle equipped with a thermometer, shearing, stirring, and condensing reflux device according to weight, and shear and emulsify for 10 minutes;
[0031] Step 2: The temperature is slowly raised to 90°C and reacted for 4 hours;
[0032] Step 3: Add sodium hydroxide to neutralize, cool and discharge.
[0033] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 33700.
Embodiment 2
[0035] The stearyl acrylate in Example 1 was replaced with pentyl acrylate, and the others remained unchanged.
[0036] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 37400.
Embodiment 3
[0038] The octadecyl acrylate in Example 1 was replaced with hexyl methacrylate, and the others were unchanged.
[0039] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 36500.
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Abstract
The invention discloses a polymer emulsifier and a preparation method thereof, which belong to the field of a high polymer material. The polymer emulsifier comprises the following components in partsby weight: 10 to 70 parts of an acrylic monomer, 5 to 50 parts of an acrylate monomer, 0.01 to 5 parts of an emulsifier, 1 to 10 parts of an initiator, 1 to 40 parts of alkali, and 50 to 200 parts ofwater; wherein the weight ratio of the acrylic monomer to the acrylate monomer is 1-7:1-5. Through combined use of the acrylic monomer, the acrylate monomer and the specific emulsifier, the prepared polymer emulsifier has a long chain alkyl chain, and has good coating effect for mineral oil, vegetable oil and benzene oil, and the emulsifying effect is good. The polymer emulsifier has a simple synthesis process and is environmentally friendly.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a polymer emulsifier and a preparation method thereof. Background technique [0002] An emulsifier is a substance used to prepare an emulsion and give it a minimum degree of stability, and is an essential component. Common emulsifiers are small molecule emulsifiers, mainly nonionic emulsifiers such as alkylphenol polyoxyethylene ethers and fatty alcohol polyoxyethylene ethers, and anionic emulsifiers such as alkylbenzene sulfonates. Polymer emulsifiers generally refer to polymer compounds with a relative molecular mass of several thousand or more and surface-active functions. According to the source, polymer surfactant compounds can be divided into natural polymer surfactants, natural modified (or semi-synthetic) polymer surfactants and chemically synthesized polymer surfactants. Natural polymer surfactants exist in animals and plants and play a very important role in the life ...
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