Water-soluble film and packaging for chemical active ingredients
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- MITSUBISHI CHEM CORP
- Filing Date
- 2018-10-16
- Publication Date
- 2026-06-03
AI Technical Summary
Existing polyvinyl alcohol films used for chemical agent packaging exhibit low water solubility at low temperatures and reduced solubility over time, particularly in neutral and weak alkaline conditions, and often fail to maintain mechanical integrity.
A water-soluble film comprising a carboxylic acid-modified polyvinyl alcohol resin with a controlled lactonization rate of the carboxylic acid modifying group within a specific range, combined with a plasticizer, enhances cold water solubility and mechanical properties, ensuring rapid dissolution and maintaining film integrity.
The film achieves rapid dissolution in cold water and maintains mechanical strength, even under varying pH conditions, facilitating easy use and reducing the need for package opening, while preventing film degradation over time.