Composition, polymer, cured product, molded article, and method for producing polymethyl methacrylate

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A composition of methyl methacrylate, methyl pivalate, and methyl propionate balances thermal stability and recyclability, addressing the challenge of recycling polymethyl(meth)acrylate articles by controlling thermal decomposition and enhancing heat resistance.

JP2025171915APending Publication Date: 2025-11-20SUMITOMO CHEM CO LTD

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Patent Information

Application Number: JP2024184877
Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner
Filing Date: 2024-10-21
Publication Date: 2025-11-20

Application Information

Patent Timeline

21 Oct 2024

Application

JP2024184877

20 Nov 2025

Publication

JP2025171915A

IPC: C08L33/12; C08K5/101; C08F20/14

CPC: Y02W30/62; C08L33/12; C08F20/14; C08K5/101

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Application Domain

Plastic recycling

Technology Topics

Polymer science Propanoic acid

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AI Technical Summary

Technical Problem

The challenge lies in achieving a balance between high thermal stability and suitability for recycling of molded articles containing polymethyl(meth)acrylate, as excessive thermal stability can hinder effective recycling processing.

Method used

A composition comprising methyl methacrylate, methyl pivalate, and methyl propionate, with specific content ranges for each, is used to control the thermal decomposition of molded articles, ensuring both high thermal stability and recyclability.

Benefits of technology

The composition enhances the thermal stability of molded articles while maintaining their recyclability, allowing for controlled thermal decomposition and improved heat resistance.

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Abstract

To provide a composition capable of controlling thermal decomposability of molded articles, and polymers, cured products, and molded articles obtained using this composition, and a method for producing polymethyl methacrylate.SOLUTION: Provided is a composition containing methyl methacrylate, methyl pivalate, and methyl propionate, wherein the concentration of methyl pivalate is more than 0 mass ppm and 50000 mass ppm or less in the composition, and the concentration of methyl propionate is more than 0 mass ppm and 2000 mass ppm or less in the composition. Provided are a polymer, a cured product, and a molded article obtained by employing the composition, and a method for producing polymethyl methacrylate by polymerizing methyl methacrylate in the composition.SELECTED DRAWING: None

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