Patent · US Active

Aqueous radiation curable polyurethane compositions

US9873818B2 · kind B2 · utility

0Cited by

6References

21Claims

0Family size

Assignee

ALLNEX BELGIUM S.A. · BE

Inventors

Michel Tielemans · Wemmel, BE
Dirk Bontinck · Ertvelde, BE
Jean-Claude Van Overvelt · Warchin, BE

Key dates

Filing date	Jun 12, 2015
Grant date	Jan 23, 2018
Priority date	—
Expiry date	Jun 12, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31605
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane pre-polymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

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