Surface modifier

By using a fluorine-free surface modifier, a liquid-repellent compound with a specific structure reacts with the surface of fibers and paper products, solving the problem of difficulty in imparting liquid repellency in existing technologies and achieving environmentally friendly water and oil repellency effects.

CN122255338APending Publication Date: 2026-06-23DAIKIN INDUSTRIES LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAIKIN INDUSTRIES LTD
Filing Date
2025-12-18
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies are insufficient to impart effective liquid-repellent properties, particularly water and oil repellent properties, to fiber and paper products, and traditional methods using fluoride-containing repellent agents pose environmental pollution risks.

Method used

A fluorine-free surface modifier is used, containing a liquid-repellent compound. This compound has a Z group with a specific structure, which imparts liquid repellency to the surface of fibers or paper products by reacting with them. The specific structure is the Z group shown as -X-Rn, where X is a valence bond or a 1+n valence group, and R is an aliphatic hydrocarbon group with alkylsilyl groups.

Benefits of technology

It achieves excellent liquid repellency, especially water and oil repellency, for fibers and paper products, and is environmentally friendly as it does not use fluorine-containing compounds.

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Abstract

The present invention provides a novel surface modifier capable of imparting liquid repellency to a fibrous product and / or a paper product. The surface modifier contains a liquid repellency compound having the following formula: -X-R n Z group represented by the following formula: -X-R 1 wherein X is a bond or a 1+n-valent group, R is independently at each occurrence a C4 to C40 aliphatic hydrocarbon group having at least one alkylsilyl group and can have a substituent, and n is 1 to 3, and the alkylsilyl group is a group represented by the following formula: -Si(R 1 1 wherein R 1 are each independently a hydrogen atom or a C1 to C10 aliphatic hydrocarbon group which can have a substituent, and at least one or more R 1 are a C1 to C10 aliphatic hydrocarbon group which can have a substituent.
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