Biodegradable resin composition and film using the same

JP7876766B2Active Publication Date: 2026-06-22MITSUBISHI CHEM CORP
View PDF 10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MITSUBISHI CHEM CORP
Filing Date
2022-03-08
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Existing biodegradable resin compositions, such as those containing polylactic acid and aliphatic polyester resins, face challenges in film formability and tear strength, limiting their use in packaging applications.

Method used

A biodegradable resin composition comprising a biodegradable polyester resin and a lactone-modified polyvinyl alcohol resin, with specific content ratios and structural modifications, enhances tear strength without compromising biodegradability.

Benefits of technology

The composition results in films with improved tear strength and maintain biodegradability, addressing the limitations of existing resin compositions.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0007876766000020
    Figure 0007876766000020
  • Figure 0007876766000021
    Figure 0007876766000021
  • Figure 0007876766000022
    Figure 0007876766000022
Patent Text Reader

Abstract

To provide: a biodegradable resin composition with which it is possible to provide a biodegradable film that can be obtained by melt molding and has improved mechanical strength (tear strength); and a biodegradable film using the biodegradable resin composition.SOLUTION: A biodegradable resin composition contains a biodegradable polyester resin (A) and a lactone-modified polyvinyl alcohol resin (B) in which a content percentage of nyl ester unit is 15-40 mol%. A content ratio of the biodegradable polyester resin (A) and the lactone-modified polyvinyl alcohol resin (B) ((A) / (B)) is 95 / 5 to 50 / 50.SELECTED DRAWING: Figure 4
Need to check novelty before this filing date? Find Prior Art