Organic photochromic material, method of production, high-precision photosensitive resin and method of production thereof

By combining yttrium-doped N-hydroxyethyl-3,3-dimethyl-6-nitroindoline spiropyran complex with photosensitive resin, a high-precision color-changing photosensitive resin was prepared, solving the problem of poor compatibility between existing photochromic materials and SLA processes. This achieved rapid and reversible color change and high mechanical properties, expanding the intelligent application of 3D printing materials.

CN119775991BActive Publication Date: 2026-06-02SHANGHAI SYNTHETIC NEW MATERIALS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI SYNTHETIC NEW MATERIALS CO LTD
Filing Date
2024-12-31
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing photochromic materials have poor compatibility with SLA processes, resulting in unsatisfactory color-changing effects, low printing accuracy, and insufficient mechanical properties. Furthermore, purchased photochromic powders are expensive and have sedimentation issues.

Method used

Yttrium-doped N-hydroxyethyl-3,3-dimethyl-6-nitroindoline spiropyran complex was used as an organic photochromic material and combined with photosensitive resin. A high-precision color-changing photosensitive resin was prepared through a specific process to ensure that the material changes color rapidly and sensitively under external light stimulation, while maintaining high mechanical strength and resolution.

Benefits of technology

This technology enables rapid and sensitive reversible color changes of photosensitive resins under external light stimulation, improving the dispersibility and stability of the material, avoiding fading and performance degradation, ensuring the reliability and durability of printed products, and expanding the application of 3D printing materials in fields such as smart sensors and wearable devices.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The present application relates to a kind of organic photochromic material, preparation, high-precision photosensitive resin and its preparation, the organic photochromic material of described yttrium-doped N-hydroxyethyl-3,3-dimethyl-6-nitroindoline spiropyran complex, the organic photochromic material of the present application can quickly, sensitively color change under external light stimulus, and with higher color contrast and reversibility.The dispersion and stability of the high-precision photosensitive resin prepared by the organic photochromic material combined with photosensitive resin are better, can avoid the problems such as fading, phase separation or performance degradation of material during use, also can ensure that photosensitive resin keeps the original high mechanical strength, high resolution and delicacy of printing material after printing, ensure the reliability and durability of printed product in practical application.
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