Method for measuring insoluble content in glycolide

The method of determining the insoluble content in glycolide by dissolution-multi-stage centrifugation-filtration-weighing and low-temperature vacuum drying solves the problems of inaccurate measurement and high energy consumption in the existing technology, and realizes high-precision and low-energy glycolide purity detection.

CN122108831APending Publication Date: 2026-05-29GUO NENG YULIN CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUO NENG YULIN CHEM CO LTD
Filing Date
2026-02-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient to accurately determine the insoluble content in glycolide, which affects the polymerization reaction and material properties. Furthermore, traditional measurement methods suffer from decomposition risks and high energy consumption.

Method used

The insoluble content in glycolide was determined by a dissolution-multi-stage centrifugation-filtration-weighing method. The sample was dissolved in ethyl acetate, washed by multi-stage centrifugation, and then dried under low temperature vacuum to avoid high temperature drying. Precise filtration with a 0.22 μm filter membrane and constant weight control were combined to reduce errors.

Benefits of technology

It significantly improves the accuracy and repeatability of determining the insoluble content in glycolide, reduces energy consumption, prevents the risk of decomposition, and ensures the accuracy and reliability of the measurement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a method for determining the content of insoluble substances in glycolide. m 1, centrifugation, remove the supernatant, and wash the remaining solid, step two, take the filter membrane to dry to constant weight, the mass is m 2, the sample solution obtained in step one is filtered by the filter membrane, and the filtered filter membrane is dried to constant weight, and the total mass of the dried filter membrane and the attached sample is weighed after cooling m 3, the blank sample is prepared at the same time, and the mass deviation of the blank sample is m 4, step three, calculate the content of insoluble substances in glycolide in percentage ω The determination method overcomes the problems of water interference and slow glycolide dissolution speed through sample pretreatment and special dissolution method, adopts low-temperature vacuum drying method to replace the traditional high-temperature drying method, prevents decomposition risk, and reduces energy consumption.
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