一种生物基热塑性长链聚酰胺弹性体及其制备方法和应用

By using castor oil derivatives and a one-step melt polycondensation process, a low-hardness, high-performance bio-based thermoplastic long-chain polyamide elastomer was prepared, solving the problems of high hardness, complex preparation, and low bio-based content of existing polyamide elastomers, and realizing the preparation of green and environmentally friendly high-performance materials.

CN121930465BActive Publication Date: 2026-07-17ANHUI BAIMAI NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI BAIMAI NEW MATERIAL TECH CO LTD
Filing Date
2026-03-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing polyamide elastomers have high hardness, complex preparation processes, and low bio-based content, making it difficult to meet the requirements for low hardness and excellent low-temperature resistance, and they do not comply with the requirements of green development.

Method used

Bio-based thermoplastic long-chain polyamide elastomers were prepared by melt polycondensation using castor oil derivatives as a base. Using raw materials such as long-chain dicarboxylic acids, short-chain diamines, diamines with side groups, and polyetheramines, combined with a one-step polymerization process, low-hardness, high-performance bio-based polyamide elastomers were prepared.

Benefits of technology

This has resulted in polyamide elastomers that are widely available, inexpensive, easy to operate, and possess excellent mechanical properties and high bio-based content, making them suitable for various application scenarios.

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Abstract

本发明涉及应用于植物油功能高分子材料技术领域的一种生物基热塑性长链聚酰胺弹性体及其制备方法和应用。针对现有聚酰胺弹性体硬度高、制备工艺复杂、生物基含量低的缺陷,本发明以包含生物基S28s二酸单体、S28so二酸单体的长链二元酸为原料,搭配短链二元胺、带侧基二元胺、聚醚胺及催化剂,经一步法熔融缩聚制备弹性体;其中,S28s、S28so由10‑十一烯酸与对应含硫单体经硫烯点击反应合成,S28so优选搭配数均分子量400~900的聚醚胺。本发明弹性体生物基含量≥60%、邵氏硬度25~40D、弹性恢复率最高可达84.3%,工艺无需预成盐,可用于纺丝制备弹性纤维、汽车发动机密封圈或高端跑鞋鞋底发泡材料,兼具绿色性、高性能与产业化价值。
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Citation Information

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