Soft-hand-feeling, high-stripping, fluoride-free, waterproof and soil-releasing finishing agent as well as preparation method and application thereof

By constructing a core-shell structure in a fluorine-free waterproof and easy-to-clean finishing agent, the problems of poor waterproofness, easy cleaning, and hand feel compatibility in existing technologies have been solved, achieving a high peel strength and soft hand feel in fabric finishing.

CN121045474APending Publication Date: 2025-12-02HANGZHOU TRANSFAR FINE CHEM CO LTD +2
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Patent Information

Application Number
CN202511331109.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-17
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

Existing fluorine-free waterproof and easy-to-clean finishing agents cannot simultaneously achieve waterproof, easy-to-clean, high peel strength, and soft hand feel. In particular, when hydrophilic/hydrophobic components are grafted onto the same polymer backbone, the waterproof effect and peel strength are affected.

Method used

The silicone-modified fluorine-free polyacrylate emulsion is constructed by creating a polyurethane structure with silicone components in the side chains. This structure is then mixed with a composite emulsifier and acrylate monomers to form a core-shell emulsion, in which the hydrophobic component is located in the core and the hydrophilic component is located in the shell, thus improving peel strength and hand feel.

Benefits of technology

It achieves high peel strength and a soft hand feel on fabrics with a fluorine-free waterproof and easy-to-clean finishing agent, while also possessing excellent waterproof and easy-to-clean properties, and improving the adhesion and peel strength between the finishing agent and the substrate.

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Abstract

The invention belongs to the technical field of textile functional chemicals, and particularly relates to a soft-hand-feeling, high-stripping, fluoride-free, waterproof and soil-releasing finishing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, constructing a polyurethane structure of which the side chain contains an organic silicon component, mixing and emulsifying the polyurethane structure with a compound emulsifier and an acrylate monomer, and initiating monomer polymerization to form an emulsion; the polyurethane containing the hydrophilic component can be used as a shell layer to coat the silicon-containing side chain containing the water-repellent component and various hydrophobic monomers including a hydrophobic monomer, a large steric hindrance monomer and a cross-linking monomer. The silicon-containing component is introduced, so that the polymer is endowed with certain softness, and a good hand feeling is brought after the polymer is arranged on a base material. Meanwhile, the silicon-containing component is coated in the emulsion core, so that the problem that the stripping fastness is reduced possibly due to the fact that the silicon-containing component is in direct contact with the fabric generally is well avoided.
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Citation Information

Patent Citations

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  • Synthetic method of organosilicon polyurethane-acrylic ester ternary composite ionomer emulsion

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