Dicarboxypolycaprolactone compound and its preparation method and application of inorganic filler dispersant

A technology of polycaprolactone and dicarboxylate, which is applied in the field of inorganic filler dispersant, application of inorganic filler dispersant, dicarboxypolycaprolactone compound and its preparation, can solve the problems of insufficient adsorption, slow adsorption speed and water content There are problems such as higher requirements, and the synthesis method is simple and efficient, the dispersion efficiency is improved, and the dispersion time is shortened.
CN110643028BActive Publication Date: 2021-06-11YANTAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANTAI UNIV
Publication Date
2021-06-11

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Abstract

The invention discloses a dicarboxy polycaprolactone compound, a preparation method thereof and an application of an inorganic filler dispersant. In the method, high-purity nitrogen or high-purity argon-protected ε-caprolactone and monohydric alcohol are placed in a reactor, a catalyst stannous octoate is added, and the reaction is carried out at 100-130° C. for 4-48 hours to obtain monohydroxyl-terminated Polycaprolactone; at 4-dimethylaminopyridine and 10-40°C, hydroxyl-containing polycaprolactone and maleic anhydride are esterified in solution; under the action of an initiator, the obtained product is regenerated React with 3-mercaptopropionic acid to obtain polycaprolactone with dicarboxyl groups at the end of the molecular chain. As a dispersant, the dicarboxypolycaprolactone compound prepared by the present invention can be quickly and firmly adsorbed on the surface of inorganic fillers, which not only meets the dispersion requirements of different inorganic filler particles, but also can significantly reduce the kinematic viscosity of the inorganic particle filling system, significantly improving The processing or construction performance of the system is improved.
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Description

technical field

[0001] The invention relates to an inorganic filler dispersant, which belongs to the field of functional materials, in particular to a dicarboxy polycaprolactone compound, a preparation method thereof and an application of the inorganic filler dispersant. Background technique

[0002] Inorganic particles such as carbonates (e.g., calcium carbonate), sulfates (e.g., precipitated barium sulfate and calcium sulfate), silicates (e.g., kaolin, talcum powder, mica powder), etc. are widely used in plastics, rubber, coatings, etc. Fill modifier for materials. These inorganic particles have wide sources, low price, and good chemical stability. Adding them into plastics or coatings according to certain methods and proportions can not only reduce the cost of materials, but also improve the hardness, mechanical strength, wear resistance, Flame retardancy, etc., effectively improving the fluidity and processability of modified materials. However, the particle size of th...

Claims

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