Method for producing polyamine compounds

The method efficiently produces polyamine compounds by reacting isocyanurate compositions derived from polyisocyanate production tar components with specific compounds, addressing inefficiencies and waste generation in existing methods.

JP7864249B2Active Publication Date: 2026-05-22MITSUI CHEMICALS INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MITSUI CHEMICALS INC
Filing Date
2024-03-08
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

There is a need for an efficient method to produce polyamine compounds that can be used in the production of polyisocyanate compounds, as existing methods are inefficient and generate significant tar waste.

Method used

A method involving the use of isocyanurate compositions, which are derived from tar components generated during polyisocyanate production, to react with specific compounds and produce polyamine compounds efficiently, reducing raw material costs and waste.

Benefits of technology

This method allows for the efficient decomposition of isocyanurate compounds to obtain polyamine compounds, reducing raw material costs and environmental burden by utilizing tar components as a raw material, while also producing high-purity polyamine compounds.

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Patent Text Reader

Abstract

This method for producing a polyamine compound comprises: a preparation step for preparing an isocyanurate composition which contains an isocyanurate compound; and a reaction step for reacting the isocyanurate compound with a compound represented by a general formula to obtain a polyamine compound.　(In the general formula, n is 1 or 2. R1 represents an amino group or a hydroxy group. R2 is a C1-10 straight-chain or branched hydrocarbon group and may be substituted with an amino group or a hydroxy group.)
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