Method for producing polyether compound, method for producing polyether compound having reactive silicon group, method for producing polyether compound having urethane bond, and method for producing polyether compound having polymerizable unsaturated group

The method addresses the issues of broad molecular weight distribution and high viscosity in polyether compounds by using controlled impurity levels and catalyst amounts, resulting in polyether compounds with improved workability and curability for adhesive and sealant applications.

WO2026014466A1PCT designated stage Publication Date: 2026-01-15AGC INC
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Patent Information

Application Number
PCT/JP2025/024630
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-13
Filing Date
2025-07-09
Publication Date
2026-01-15

AI Technical Summary

Technical Problem

Existing methods for producing polyether compounds using double metal cyanide complex catalysts result in broad molecular weight distribution and high viscosity, leading to poor workability and insufficient curability or unsaturated group functionality.

Method used

A method involving the use of a double metal cyanide complex catalyst with specific alkylene oxide-containing raw materials having controlled impurity levels and precise catalyst amounts to achieve narrow molecular weight distribution, low viscosity, and improved workability and curability.

Benefits of technology

The method produces polyether compounds with narrow molecular weight distribution, low viscosity, and enhanced workability, ensuring excellent curability and functionality for applications such as adhesives and sealants.

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Patent Text Reader

Abstract

According to the present invention: a method for producing a polyether compound having a hydroxyl group includes polymerizing the AO in an AO-containing raw material with an initiator having a hydroxyl group in the presence of a composite metal cyanide complex catalyst, wherein the acid value of the AO-containing raw material is 0.001-0.008 mgKOH / g; a method for producing a polyether compound having a reactive silicon group further includes converting a hydroxyl group of a polyether compound into a group having a reactive silicon group; a method for producing a polyether compound having a urethane bond further includes reacting a polyisocyanate with a polyether compound having a hydroxyl group; and a method for producing a polyether compound having a polymerizable unsaturated group further includes converting a hydroxyl group of a polyether compound into a group having a polymerizable unsaturated group.
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Citation Information

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