A hydroxyl composition for preparing bio-based polyurethane and bio-based polyurethane
By using a specific hydroxyl composition to prepare bio-based polyurethane, the problem of insufficient fold resistance of bio-based polyurethane under low temperature conditions is solved, and a combination of high peel strength and excellent low temperature fold resistance is achieved.
Patent Information
- Application Number
- CN202310060994.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-01-16
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2043-01-16
AI Technical Summary
The existing bio-based polyurethane synthetic leather has poor fold resistance under low temperature conditions and cannot have high peel strength and excellent low temperature fold resistance.
Using a hydroxyl composition including vegetable oil polyol, bio-based polyol and chain extender, bio-based polyurethane with excellent low temperature resistance is prepared by defining the bio-based polyol as a bio-based polyether polyol and/or bio-based polyester polyol, and containing dimer acid and other dibasic acids in the polymeric monomer.
The excellent folding resistance and high peel strength of bio-based polyurethane under low temperature conditions have been achieved, and the problem that the prior art cannot have both of these properties.