Patent · US Active

Polyurethane hybrid system combining high compressive strength and early water resistance

US11214517B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Lars CONRAD · Stuttgart, DE
Kathrin BRACHT · Weil der Stadt, DE
Jochen GRÖTZINGER · Schwäbisch Gmünd, DE

Key dates

Filing date	Oct 12, 2018
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Nov 20, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/74
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to the use of a multi-component composition comprising A) a polyol component (A) comprising at least one polyol and water, B) a hardener component (B) comprising at least one polyisocyanate, and C) a solid component (C) comprising a hydraulic binder and one or more aggregates, as an early water resistant construction or repair material for constructing, repairing or refurbishing component parts, wherein the mixed and applied multi-component composition is immersed in water not later than 8 hours, preferably not later than 2 h, after application.The use as an early water resistant construction or repair material is especially suitable for component parts, which are in contact with water during operation such as offshore wind energy plants or water retaining systems, e.g. pipelines.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.