Method for producing polyalkylene oxide
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United States of America
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Jan 14, 2025
Grant Date -
Mar 16, 2023
app pub date -
Sep 14, 2022
filing date -
Sep 14, 2022
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A method for producing a polyalkylene oxide includes step 1 of performing a polymerization reaction of an alkylene oxide in the presence or absence of a chain transfer agent to obtain a high-molecular-weight polyalkylene oxide; and step 2 of irradiating the high-molecular-weight polyalkylene oxide obtained in step 1 with radiation to obtain a polyalkylene oxide, wherein the amount of the chain transfer agent when used is less than 300 mass ppm relative to the alkylene oxide, and the high-molecular-weight polyalkylene oxide obtained in step 1 has a viscosity at 25° C. in a 1 mass % aqueous solution of 7500 mPa·s or more.
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International Classification(s)
- 2022 Application Filing Year
- C08J Class
- 2006 Applications Filed
- 320 Patents Issued To-Date
- 15.96 % Issued To-Date
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- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
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