Plasticizer composition, thermoplastic polyurethane resin composition containing the plasticizer composition, and molded body of the thermoplastic polyurethane resin composition

CN116568757BActive Publication Date: 2026-06-26DIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DIC CORP
Filing Date
2021-10-14
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing thermoplastic polyurethane resin molded parts are prone to coloring when using dipropylene glycol dibenzoate plasticizers, and the cost is high, making it difficult to achieve excellent plasticizing performance while maintaining softness and aesthetic appearance.

Method used

A plasticizer composition of diethylene glycol dibenzoate and 1,2-propanediol dibenzoate in a specific mass ratio, ranging from 50:50 to 80:20, is used in thermoplastic polyurethane resins to avoid coloring and improve plasticizing performance.

Benefits of technology

This invention achieves non-coloring thermoplastic polyurethane resin molded articles with excellent plasticizing properties, reducing costs while maintaining softness and aesthetic appearance.

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Abstract

The present application provides a plasticizer composition which does not color the obtained molded body and has excellent plasticizing properties. Specifically, a plasticizer composition consisting of diethylene glycol dibenzoate and 1,2-propanediol dibenzoate, the mass ratio of the diethylene glycol dibenzoate to the 1,2-propanediol dibenzoate being in the range of diethylene glycol dibenzoate:1,2-propanediol dibenzoate = 50:50 to 80:20.
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Citation Information

Patent Citations

  • Electroconductive plasticizer for polyurethane and electroconductive polyurethane

    JP2002047410A

  • Blend of dibenzoate plasticizers

    JP2014507514A

  • Hot melt composition and process for forming the same

    US4608418A

  • Improved reactive polyurethane systems

    WO2020006473A1