COP compatibilizer, preparation method and application of COP compatibilizer in multi-layer co-extruded film
By functionalizing COP with anhydride and grafting glycidyl ester onto polyolefins, the problem of poor compatibility between COP and polyolefin compounds was solved, achieving high strength and efficient heat sealing of multilayer co-extruded films.
CN121824965APending Publication Date: 2026-04-10CHONGZHOU JUNJIAN PLASTIC CO LTD
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Patent Information
- Application Number
- CN202610081119.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-04-10
AI Technical Summary
Technical Problem
COP has poor compatibility with polyolefin compounds, which limits its application and product development.
Method used
An anhydride-functionalized COP and a graft copolymer of polyolefin-grafted glycidyl ester are used as compatibilizers to form a chemical and physical dual bond between the COP layer and the PP/PE layer through a chemical reaction, thereby improving compatibility.
Benefits of technology
It significantly improves the mechanical properties and thermal bonding strength of multilayer co-extruded films, enhances interlayer peel strength, increases production speed, and reduces the impact on heat-sensitive contents.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of functional materials, and particularly discloses a COP compatibilizer, a preparation method and application of the COP compatibilizer in a multi-layer co-extruded film. The COP compatibilizer is a grafted copolymer of anhydride functionalized COP and polyolefin grafted glycidyl ester; wherein the proportion of the COP chain segment is 30-50%, and the polyolefin grafted glycidyl ester comprises polypropylene glycidyl ester or polyethylene glycidyl ester. The COP compatibilizer provided by the invention can effectively improve the compatibility of COP with polypropylene and polyethylene, can significantly improve the mechanical properties of a film material when being used for preparing a co-extrusion multilayer film, can also be used as a bonding layer to improve the adhesiveness of a COP layer with PP and PE layers, and can also be blended with COP to serve as an inner layer to improve the heat sealing property of the COP as the inner layer.
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