An acetoacetic ester-modified methacrylic ester polymer and its use as an oxygen scavenging material
By combining acetoacetate-modified methacrylate polymers with transition metal salt catalysts, the problem of preparing oxygen scavenging materials in the prior art has been solved, achieving efficient and stable oxygen scavenging effect, and is suitable for packaging products made of various resin materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU CARBON OXYGEN TECH CO LTD
- Filing Date
- 2023-09-28
- Publication Date
- 2026-06-19
AI Technical Summary
In the preparation process of existing oxygen scavenging materials, key raw materials are difficult to obtain and expensive, and reaction control is difficult, resulting in unstable oxygen barrier properties of polyester packaging materials, and they are prone to self-crosslinking or charring at high temperatures.
A methacrylate polymer modified with acetoacetate was used as an oxygen scavenging material. It was synthesized in a reactor via free radical polymerization to prepare an oxygen scavenging material with controllable molecular weight. This material was then combined with a transition metal salt catalyst and added to a resin material. Packaging materials with high oxygen barrier properties were prepared by melt blending and extrusion.
This approach achieves good compatibility between inexpensive and readily available oxygen scavenging materials and resin substrates, improves oxygen barrier efficiency, avoids self-crosslinking and migration phenomena, simplifies the operation process, and enhances the oxygen barrier performance of packaging materials.
Smart Images
Figure CN117343230B_ABST