Biodegradable polyester compositions, biodegradable polyester materials, methods of making the same, and cast films, methods of making the same, and applications thereof
By adding components such as maleic anhydride copolymer microspheres to biodegradable polyester, the dispersibility and optical properties of biodegradable films are improved, solving the problems of insufficient photo-oxidative aging and mechanical properties of existing films, and realizing high-performance biodegradable materials suitable for packaging, protective films and agricultural films.
CN117946499BActive Publication Date: 2026-11-06CHINA PETROLEUM & CHEMICAL CORP +1
Patent Information
- Application Number
- CN202211331356.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-10-28
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2042-10-28
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Abstract
The application relates to the field of high molecules, and discloses a biodegradable polyester composition, a biodegradable polyester material, a preparation method of the biodegradable polyester material, a cast film, a preparation method of the cast film and application of the cast film. The composition comprises 100 parts of degradable polyester, 0.01-2 parts of an antioxidant, 0.01-2 parts of an ultraviolet absorber, 0.01-2 parts of a light stabilizer and 0.05-2 parts of a compatible dispersant; wherein the compatible dispersant is maleic anhydride copolymer microspheres, and the particle size of the maleic anhydride copolymer microspheres is 1000-1600 nm. The composition takes the degradable polyester as a base resin, and contains the maleic anhydride copolymer microspheres as the compatible dispersant; the compatible dispersant can improve the dispersibility of components in the composition, so that the cast film prepared from the composition has the characteristics of good mechanical properties, good optical properties, good light aging resistance and biodegradability, and the preparation process is simple and suitable for large-scale production.
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Citation Information
Patent Citations
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