Additive for and a method of improving early resistance to driving rain of coating compositions

US7897668B2 · kind B2 · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Christian Foerg · Dillishausen, DE
• Klaus Gebauer · Krefeld, DE
• Herbert Muenzenberger · Wiesbaden, DE
• Sebastian Simon · Buchloe, DE

Key dates

• Filing date: Jul 2, 2009
• Grant date: Mar 1, 2011
• Expiry date: Jul 2, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/103
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An additive for improving the early resistance to driving rain of physically curing coating compositions based on aqueous acrylate dispersions, which have been adjusted to an alkaline pH, is characterized by a basically adjusted aqueous bees wax emulsion containing an aqueous dispersion and at least one representative of the group comprising 1,3 -dihydroxy-2,2,4-trimethylpentane and esters thereof, butyl diglycol acetate and methoxypropanol as film-forming agents, as well as optionally a pigment and optionally an ammonium acrylate as pigment disperser.