Antifouling, sound-damping and touch-improving agent for leather and preparation method thereof

By preparing a stain-resistant and noise-absorbing agent for hyperbranched polyether-modified vinyl hydrogen silicone oil, the problems of easy soiling and noise in leather products were solved, achieving fluorine-free stain-resistant and noise-absorbing effects and improved feel.

CN119684834BActive Publication Date: 2025-11-04SICHUAN DOWELL SCI & TECH INC
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Patent Information

Application Number
CN202411858108.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-11-04
Estimated Expiration
2044-12-17

AI Technical Summary

Technical Problem

Existing leather products are prone to getting dirty during use and generate noise when rubbed. Furthermore, due to the ban on fluorosilicone structures, traditional stain-resistant and noise-absorbing hand-feeling agents are restricted.

Method used

Hyperbranched polyether modified vinyl hydrogen silicone oil was prepared by addition reaction of materials such as dielyl polyether, allyl methacrylate and hydrogen-terminated polydimethylmethylhydrosiloxane. It was then mixed and dispersed with isomeric tridecyl alcohol polyoxyethylene ether to form a fluorine-free antifouling and sound-absorbing hand feel agent.

Benefits of technology

It achieves excellent anti-fouling and noise reduction effects without being restricted by the fluorine ban, improves the physical properties and hand feel of the coating system, and has a wider range of applications.

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Abstract

The application belongs to the field of leather auxiliaries, and particularly relates to a kind of anti-stain, sound-damping and touch agent for leather and a preparation method thereof. The preparation method comprises the following steps: mixing double allyl polyether, allyl methacrylate, a catalyst and hydrogen-terminated polydimethylmethylhydrogen siloxane, then heating and reacting to obtain an intermediate; mixing the intermediate with isomeric tridecanol polyoxyethylene ether 1305 and isomeric tridecanol polyoxyethylene ether 1307, then heating, stirring and dispersing, and adding deionized water to continue stirring and dispersing. The anti-stain, sound-damping and touch agent for leather does not contain fluorine in the structure, so it is not limited in use due to the fluorine ban. In addition, different from conventional hyperbranched, the present application adopts silicon-hydrogen addition hyperbranched, which is more flexible in structure design, has a larger silicon crosslinking density, can achieve better anti-stain and sound-damping effects, and can improve the physical properties of the finishing system. The touch of the anti-stain, sound-damping and touch agent for leather can be adjusted to a large extent, and it is more widely applicable.
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