Hydrophobing agent

US5459499A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Carsten Senge · Bad Zwischenahn, DE
• Jorg Erdmann · Berlin, DE
• Jana Dahlmeier · Berlin, DE

Key dates

• Filing date: Mar 8, 1993
• Grant date: Oct 17, 1995
• Expiry date: Mar 8, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A hydrophobing agent (30) includes chain-like, cross-linkable, halogen-containing copolymers, a cross-linking agent, where the cross-linking agent enters into cross-linking bonds with the copolymers, and at least two solvents with differing boiling points. The weight of the components and the boiling points of the solvents are provided such that the first solvent is substantially already evaporated upon application on the surface (9) to be coated, whereas the second solvent evaporates substantially only after the application onto the surface (9) under formation of a hydrophobically acting layer attached to the surface (9).