Process for producing building materials from raw paint sludge

US7128780B2 · kind B2 · utility

Assignee

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

Inventors

• Robert R. Matheson · Beverly Hills, US
• Dennis Dixon · Flint, US
• John R. Moore · Lansdale, US
• David Fischer · Breunigweiler, DE

Key dates

• Filing date: Oct 3, 2002
• Grant date: Oct 31, 2006
• Expiry date: Oct 3, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for producing building materials, such as asphalt, cement, concrete, mortar, or plaster board from liquid paint sludge containing water and paint solids produced from overspray in commercial paint booth operations. The preferred embodiment comprises adding the liquid paint sludge as the hydrating agent directly to the building material mix.