Patent · US Active

Polyurethane-based protective coatings for rotor blades

US9732252B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Bernd Kuehneweg · Düsseldorf, DE
Björn Weber
Timothy N. Narum · Circle Pines, US
Stuart E. Fores · Darlington, GB
Ian Robinson · Guisborough, GB
Eva Maria Roggentin · Mülheim an der Ruhr, DE
Guido Hitschmann · Neuss, DE
Rainer Kurz · Taunusstein, DE

Key dates

Filing date	May 15, 2012
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Dec 1, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31551
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Provided are reactive compositions for making a polyurethane-based rain-erosion protective coating for rotor blades, the reactive composition comprising an isocyanate-reactive component and an isocyanate-functional component and wherein the isocyanate-reactive component comprises

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