Oxidized cellulose, nanocellulose, and dispersions thereof

JP2026102831APending Publication Date: 2026-06-23TOAGOSEI CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TOAGOSEI CO LTD
Filing Date
2026-03-19
Publication Date
2026-06-23

AI Technical Summary

Benefits of technology

【0010】 本発明によれば、解繊性に優れた酸化セルロースを得ることができる。特に、本発明の酸化セルロースは、温和な条件で解繊処理を行った場合にも均一に微細化させることができ、易解繊性に優れている。

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Abstract

The primary objective is to provide oxidized cellulose with excellent defibrillation properties. [Solution] The oxidized cellulose is an oxide of a cellulosic raw material made from hypochlorous acid or a salt thereof, which substantially does not contain N-oxyl compounds and has a degree of polymerization of 600 or less.
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Claims

1. Oxidized cellulose is an oxide of a cellulosic raw material made from hypochlorous acid or its salt, It is substantially free of N-oxyl compounds, Oxidized cellulose with a degree of polymerization of 600 or less.

2. The oxidized cellulose according to claim 1, wherein the amount of carboxyl groups is 0.30 to 2.0 mmol / g.

3. The oxidized cellulose according to claim 1 or 2, wherein the light transmittance of the nanocellulose aqueous dispersion obtained by defibrating the 0.1% by mass aqueous dispersion of oxidized cellulose in a rotating agitator at a rotational speed of 2000 rpm and a rotational speed of 800 rpm for 10 minutes is 60% or more.

4. Oxidized cellulose is an oxide of a cellulose-based raw material, Oxidized cellulose, wherein the light transmittance of the nanocellulose aqueous dispersion obtained by defibrating the 0.1% by mass aqueous dispersion of oxidized cellulose in a rotating agitator at a rotational speed of 2000 rpm and a rotational speed of 800 rpm for 10 minutes is 60% or more.

5. The oxidized cellulose according to claim 4, wherein the oxidized cellulose is an oxide of a cellulosic raw material due to hypochlorous acid or a salt thereof.

6. A dispersion of oxidized cellulose, wherein the oxidized cellulose according to any one of claims 1 to 5 is dispersed in a dispersion medium.

7. Nanocellulose, which is obtained by defibrating oxidized cellulose according to any one of claims 1 to 6, and has an average fiber width of 1 to 200 nm.

8. Nanocellulose obtained by defibrating oxidized cellulose according to any one of claims 1 to 6 in a rotating and revolving agitator at a rotational speed of 1200 to 2500 rpm and a rotational speed of 600 to 1000 rpm for 3 to 15 minutes.

9. A nanocellulose dispersion in which the nanocellulose described in claim 7 or 8 is dispersed in a dispersion medium.