Surfactants

US9302941B2 · kind B2 · utility

Assignee

• LAFARGE · FR

Inventors

• Ellis Gartner · Silver Spring, US
• Lê-Chiên Hoang · Poitiers, FR

Key dates

• Filing date: Sep 5, 2012
• Grant date: Apr 5, 2016
• Expiry date: Dec 27, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A particulate material for the production of a cement foam which material includes particles including, attached to the particle surface, a surfactant which renders the particles hydrophilic, the surfactant including a moiety which is hydrolysable under alkaline conditions, which surfactant, after loss of the moiety by alkaline hydrolysis, renders the particles partially hydrophobic.