Polyvinyl butyral modified material, and preparation method and application thereof

Through the synergistic effect of the composite dispersion system and the metal salt adhesion modifier, the problems of uneven dispersion and decreased adhesion of the colored PVB interlayer film were solved, achieving uniform coloring and stable adhesion, thus improving the performance of laminated glass.

CN122103791APending Publication Date: 2026-05-29YINIAN OPTICAL MATERIALS MANUFACTURING (BAODING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YINIAN OPTICAL MATERIALS MANUFACTURING (BAODING) CO LTD
Filing Date
2026-03-06
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing colored PVB interlayer films suffer from uneven colorant dispersion, leading to increased haze. Furthermore, the adhesion to the glass substrate decreases with increasing moisture content, affecting the structural stability and safety performance of laminated glass.

Method used

A composite dispersion system, including acrylic dispersants and phosphate ester dispersants and stabilizers, combined with alcohol solvents, is used to prepare polyvinyl butyral modified materials through melt extrusion and granulation processes. This achieves uniform dispersion of the colorant, and the adhesion is stabilized by using a metal salt adhesion modifier.

Benefits of technology

It achieves excellent color uniformity, reduces haze by 25%~37.5%, improves adhesion stability by 29%~45%, and does not reduce impact adhesion value when moisture content increases, thus improving the overall performance of laminated glass.

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Abstract

The present application relates to the technical field of laminated glass material, and particularly relates to a polyvinyl butyral modified material, a preparation method and application thereof. The present application realizes efficient and uniform dispersion of colorants through a specific composite dispersion system, thereby reducing the haze of the film material prepared from the polyvinyl butyral modified material, from the existing 0.8% to 0.5~0.6%, with a reduction range of 25%~37.5%, and the adhesive force is not reduced when the water content increases. The polyvinyl butyral interlayer film provided by the present application is uniformly colored, and when the water content increases from 0.4% to 1.5%, the impact adhesion value is not lower than the impact adhesion value when the water content is 0.4%, and when used for laminated glass, the comprehensive performance and environmental adaptability of the laminated glass can be improved, and the economic and social benefits are remarkable.
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