Bis(isobutyraldimine) of 1,4-diaminobutane in HDI trimer and biuret-based coatings

US5856420A · kind A · utility

Assignee

• Arco Chemical Technology, L.P. · US

Inventors

• Benjamin W. Tucker · Bethany, US
• Henry G. Barnowski · Durham, US
• Edward A. Barsa · Glen Mills, US
• Peter J. Whitman · Hamden, US
• Augustin T. Chen · Cheshire, US
• Willard F. Burt · Bristol, US
• Stephen L. Goldstein · Glen Mills, US
• James M. O'Connor · Bellevue, US

Key dates

• Filing date: Apr 17, 1996
• Grant date: Jan 5, 1999
• Expiry date: Apr 17, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/7831
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are new coatings compositions based on an HDI isocyanurate or biuret polyisocyanate and a bis(imine) reaction product of a diaminoalkane containing between two and five carbon atoms with an alkyl aldehyde containing between four and seven carbon atoms (advantageously a bis(imine) product of the reaction of 1,4-diaminobutane and isobutyraldehyde). The latter bis(imine) is completely miscible in HDI isocyanurate and biuret polyisocyanates, and, as a reactive diluent, allows the preparation of high performance coatings formulations that require only small amounts of solvents to achieve a conveniently sprayable viscosity.