Poly (aromatic ester-ether)-based biodegradable material polyester and preparation method thereof

Poly(aromatic ester-ether) diols were synthesized by emulsion polymerization and reacted with organic diacids to prepare poly(aromatic ester-ether)-based biodegradable materials such as polyester. This solved the problem of tetrahydrofuran byproducts in PBAT production and achieved a balance between efficient biodegradability and mechanical properties, making it suitable for large-scale industrial production.

CN121824926APending Publication Date: 2026-04-10MERYER TECHNOLOGIES CO LTD
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Patent Information

Application Number
CN202610035389.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing PBAT materials generate tetrahydrofuran byproducts during the production process, leading to reduced yield, increased costs, and unstable product quality, making it difficult to achieve large-scale industrial production.

Method used

Poly(aromatic ester-ether) diols were synthesized by emulsion polymerization and then esterified and polycondensed with organic diacids, multifunctional crosslinking agents and stabilizers under the action of a catalyst to prepare poly(aromatic ester-ether) based biodegradable polyester materials. This process avoids the formation of tetrahydrofuran and ensures the biodegradability and mechanical properties of the materials.

Benefits of technology

It achieves a balance between efficient biodegradability and mechanical properties of materials, solving the problem that traditional biodegradable materials are prone to becoming brittle or difficult to degrade during the degradation process. The product has high quality stability and is suitable for large-scale production.

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Abstract

The invention relates to a poly (aromatic ester-ether)-based biodegradable material polyester and a preparation method thereof. The method comprises the following steps: firstly, taking 3-allyl-4-hydroxybenzoate and cyclohexyl-1, 4-dimethyl alcohol monovinyl ether as monomers, and synthesizing poly (aromatic ester-ether) dihydric alcohol through emulsion polymerization; and carrying out esterification and polycondensation on the polyester, organic dibasic acid, 2, 4-methyl dihydroxybenzoate, a polyfunctional cross-linking agent and a stabilizer under the action of a catalyst to prepare the novel poly (aromatic ester-ether)-based biodegradable material polyester. According to the method, traditional 1, 4-butanediol is replaced with methyl 2, 4-dihydroxybenzoate, so that cyclization side reaction is effectively inhibited, tetrahydrofuran is prevented from being generated, and consistency and stability of product quality are guaranteed. The obtained polyester material has excellent biodegradability and mechanical tensile property, and is suitable for plastic products such as mulching films, packaging bags and the like which need to be completely degraded and have enough mechanical strength requirements.
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