Patent · US Expired

Materials suitable as crosslinkable binder components

US5473042A · kind A · utility

1Cited by

6References

7Claims

0Family size

Assignee

BASF Magnetics GmbH · DE

Inventors

Gregor Brodt · Heppenheim, DE
Thomas Wunsch · Speyer, DE
August Lehner
Albert Kohl · Laumersheim, DE

Key dates

Filing date	Jan 10, 1995
Grant date	Dec 5, 1995
Priority date	—
Expiry date	Jan 10, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/6535
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A material suitable as crosslinking binder component for pigment-containing coatings and having an average molecular weight of from 25,000 to 150,000, obtainable by reacting a polyurethane comprising a diol having a molecular weight between 400 and 4,000, an aliphatic or cycloaliphatic diol of 2-18 carbon atoms, an aromatic diol of 8-36 carbon atoms, a trihydric or polyhydric alcohol of 3-18 carbon atoms, a polyhydric alcohol of 3-40 carbon atoms containing a tertiary amino group, and a diisocyanate of 3-34 carbon atoms with a compound containing one or more hydroxyl groups and one or more amino groups reactive toward isocyanate groups. The materials may be used as crosslinkable binder components for pigment-containing coatings, in particular for the production of magnetic recording materials.

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