Method for producing microfibrillar cellulose / microfine inorganic layered compound inclusion and microfibrillar cellulose / microfine inorganic layered compound inclusion

By micronizing a mixture of cellulose fibers with ionic substituents and an inorganic layered compound in a solvent-limited environment, the method addresses dispersibility issues, achieving a uniformly dispersed and efficiently produced fine fibrous cellulose-fine inorganic layered compound inclusion.

JP7711383B2Active Publication Date: 2025-07-23OJI HLDG CORP
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Patent Information

Application Number
JP2021011462
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-01-28
Filing Date
2021-01-27
Publication Date
2025-07-23
Estimated Expiration
2041-01-27

AI Technical Summary

Technical Problem

Existing methods for producing a mixture of cellulose nanofibers and micronized inorganic layered compounds face issues with insufficient dispersibility of fine particles, leading to challenges in uniform dispersion and efficient production.

Method used

A method involving a micronization treatment of a mixed solution containing cellulose fibers with ionic substituents and an inorganic layered compound, with a solvent content of 97% by mass or less, using a high-pressure homogenizer while suppressing bubbling, to achieve a fine fibrous cellulose-fine inorganic layered compound inclusion with enhanced dispersibility.

Benefits of technology

The method results in a uniformly dispersed fine fibrous cellulose-fine inorganic layered compound inclusion with improved particle dispersibility and increased production efficiency.

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Abstract

To provide a microfibrous cellulose / micro inorganic laminar compound-containing material having excellent particle dispersion properties.SOLUTION: The present invention relates to a method for producing a microfibrous cellulose / micro inorganic laminar compound-containing material, the method comprising a step for performing refining treatment to a liquid mixture containing an ionic substituent-containing cellulose fiber, an inorganic laminar compound, and a solvent, where, the solvent content of the liquid mixture is 97 mass% or more of the total mass of the liquid mixture. In addition, the present invention also relates to a microfibrous cellulose / micro inorganic laminar compound-containing material produced by the production method.SELECTED DRAWING: None
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Citation Information

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