Hydrophilic polyurethane grout composition, hydrophilic polyurethane grout, and preparation method and application thereof

Hydrophilic polyurethane grout prepared through specific compositions and processes solves the problems of insufficient water-binding performance and long gelation time, achieving better construction adaptability and waterproofing and leak-stopping effects.

CN121086183BActive Publication Date: 2026-06-19FOSHAN KESHUN BUILDING MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FOSHAN KESHUN BUILDING MATERIAL CO LTD
Filing Date
2025-09-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing hydrophilic polyurethane grouting materials have insufficient water-binding properties and long gelation times, making it difficult to meet current construction needs.

Method used

A hydrophilic polyurethane grout is prepared by combining a specific first polyether polyol with polyethylene oxide diol and adding emulsifiers and other additives through a specific mixing and dehydration process.

Benefits of technology

The prepared polyurethane grout has excellent hydrophilic properties and a shorter gel time, making it suitable for grouting and sealing damp cracks, plugging water in strata with dynamic water flow, and protecting the surface layer of damp soil.

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Abstract

This invention relates to the field of waterproofing in building engineering, and discloses a composition for a hydrophilic polyurethane grout, a hydrophilic polyurethane grout, its preparation method, and its application. The composition consists of a main agent and additives. The main agent contains a first polyether polyol, a second polyether polyol, and a diisocyanate. Based on the total weight of the composition, the content of the first polyether polyol is 40-55 wt%, the content of the second polyether polyol is 5-10 wt%, and the content of the diisocyanate is 10-15 wt%. The hydrophilic polyurethane grout provided by this invention has significantly better hydrophilicity, stronger water-binding performance, and a shorter gel time.
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