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US 2023/0095911 A1Published application
Micro cellulose fiber complex
AssigneeKao Corporation
InventorsKyohei YAMATO, Yutaka YOSHIDA
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AssigneeKao Corporation
InventorsKyohei YAMATO, Yutaka YOSHIDA
Estimating the term…
A fine cellulose fiber composite in which a modifying group is bound to a carboxy group of fine cellulose fibers, the fine cellulose fibers having a carboxy group content of 0.1 mmol/g or more, wherein the fine cellulose fiber composite has an average aspect ratio of 1 or more and 150 or less; and a resin composition containing the fine cellulose fiber composite and a resin. The resin composition containing a fine cellulose fiber composite of the present invention has excellent heat resistance, and the molded article of this resin composition has excellent mechanical strength, heat resistance, and dimensional stability. Accordingly, the present invention can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and automobile parts.
A method for producing fine cellulose fibers, comprising subjecting cellulose fibers to a treatment of lowering an aspect ratio, wherein the cellulose fibers are previously subjected to a treatment of introducing a carboxy group to natural cellulose fibers.
A method for producing fine cellulose fibers, comprising subjecting cellulose fibers to one or more treatments selected from an acid hydrolysis treatment, a hydrothermal decomposition treatment, an alkali treatment, and a pulverization treatment with a vessel driving medium mill, wherein the cellulose fibers are previously subjected to a treatment of introducing a carboxy group to natural cellulose fibers.
A method for producing fine cellulose fibers, comprising subjecting cellulose fibers to an acid hydrolysis treatment at a treatment temperature of 80° C. or higher and 120° C. or lower, a hydrothermal decomposition treatment at a treatment temperature of 70° C. or higher and 250° C. or lower, a pulverization treatment with a planetary ball-mill, or a pulverization treatment with a rod mill, wherein the cellulose fibers are previously subjected to a treatment of introducing a carboxy group to natural cellulose fibers.
Dependencies are inferred from the claim text.