Resin composition
By combining polyester polyols with polylactic acid polymers of a specific structure to form a phase-separated structure, the problem of the glass transition temperature of polylactic acid polymers decreasing after plasticization is solved, and a resin composition with high elongation and impact resistance is achieved.
Patent Information
- Application Number
- CN202480034665.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-02
- Filing Date
- 2024-05-31
- Publication Date
- 2025-12-19
AI Technical Summary
In the prior art, the glass transition temperature of polylactic acid polymer resin compositions decreases significantly after the addition of plasticizers, which fails to meet the requirements for good elongation and impact resistance.
A combination of polyester polyols with specific structures and polylactic acid polymers is used. The polyester polyols contain aliphatic diols with alkyl groups as branches and more than 4 carbon atoms. Through compatibility, a phase separation structure is formed, which suppresses the decrease in glass transition temperature and improves elongation and impact resistance.
It effectively suppressed the decrease in glass transition temperature, improved the elongation and impact resistance of the resin composition, and achieved good mechanical properties.