Process for producing reactive silane oligomers

US6329489A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Basil V. Gregorovich · Wilmington, US
• Isidor Hazan · Clementon, US
• Robert R. Matheson · Beverly Hills, US
• Lech Wilczek · Wilmington, US

Key dates

• Filing date: Dec 20, 1999
• Grant date: Dec 11, 2001
• Expiry date: Dec 20, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention is directed to a process for making a reactive silane oligomer having low polydispersity, viscosity and volatility. The process utilizes reacting unsymmetrical difunctional silane monomers with water, diol monomers, or a combination thereof to make the reactive silane oligomer. The unsymmetrical difunctional silane monomers are with silane reactive groups having significantly different reactivities. Use of such reactive silane oligomers results in multi-component coating compositions having high miscibility, low VOC, low viscosity and high percentage of solids.