Environment-friendly solvent type polyvinyl acetal resin, and preparation method and application thereof

By using the environmentally friendly solvent γ-valerol to replace toluene, and by controlling the particle number ratio and water acid content, an environmentally friendly solvent-based polyvinyl acetal resin with low foreign matter content and high mechanical strength was prepared. This solved the problems of VOC emissions and insufficient mechanical strength, and is suitable for the preparation of high-reliability multilayer ceramic capacitors.

CN122404883APending Publication Date: 2026-07-17EVERLIGHT YEAR POLYMER MATERIALS (JIANGSU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
EVERLIGHT YEAR POLYMER MATERIALS (JIANGSU) CO LTD
Filing Date
2026-05-19
Publication Date
2026-07-17

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Abstract

本发明涉及高分子材料及电子元件技术领域，尤其涉及一种环保溶剂型聚乙烯醇缩醛树脂及其制备方法和应用。本发明采用乙醇‑γ‑戊内酯混合溶剂替代传统甲苯溶剂，通过控制粒子数比例、水酸基量换算波数幅等关键指标，在满足GB / T 23986‑2009规定的VOC排放≤5g / L环保要求的同时，保持了低异物含量和高机械强度。本发明的制备方法通过特定混合溶剂和陶瓷膜过滤，进一步降低粒子残留；所得陶瓷生片的表面粗糙度Rz≤0.30μm，破断点应力≥33MPa，破断点应变≥21%，能够用于制备高可靠性积层陶瓷电容器等电子元件，解决了传统溶剂型树脂VOC排放高的环保问题，符合绿色制造发展需求。
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