Particles and resin compositions

Particles with controlled properties enhance the biodegradability and heat resistance of biodegradable resins by using a porous cellulose structure to manage decomposition accelerators, addressing degradation issues under normal and accelerated conditions.

JP2026109379APending Publication Date: 2026-07-01FUJIFILM BUSINESS INNOVATION CORP
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Patent Information

Application Number
JP2024224456
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Existing biodegradable resins, particularly polylactic acid, are prone to degradation under normal usage conditions when in contact with decomposition accelerators, and their biodegradability is not optimized in decomposition-accelerating environments.

Method used

Particles composed of a porous structure mainly of cellulose and cellulose derivatives, with controlled volume-average particle size, BET specific surface area, degree of hydrophobicity, and decomposition accelerator content, are used in a biodegradable resin to suppress degradation under normal conditions and enhance biodegradability under accelerated decomposition conditions.

Benefits of technology

The particles provide a resin molded article that is less prone to degradation under normal conditions and exhibits improved biodegradability in decomposition-promoting environments, with enhanced heat resistance and uniform dispersion.

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Abstract

To provide particles that yield resin molded articles that are resistant to degradation under normal usage conditions and exhibit good biodegradability under conditions that accelerate decomposition. [Solution] A particle comprising a porous structure mainly composed of cellulose and a cellulose derivative, and a decomposition accelerator supported on the porous structure, wherein the volume average particle size of the particle is 0.05 μm or more and 1000 μm or less, and the BET specific surface area of ​​the particle is 1 m² 2 / g or more 150m 2 Particles having a particle size of less than or equal to / g, a degree of hydrophobicity of the particles of 0.1% to 30%, and a content of the decomposition accelerator of 1 to 50 parts by mass per 100 parts by mass of the porous structure.
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Citation Information

Patent Citations

  • Readily degradable film

    JP2009057408A

  • Composite resin molded body with adjusted decomposition rate and production method of the same

    JP2022171207A

  • Marine biodegradation promoter having two or more monovalent organic anions, and marine biodegradable composition

    WO2023100258A1