Oligomeric dispersant

US6861459B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Thomas M. Vickers, Jr. · Powell, US
• Rainer Packe-Wirth · Trostberg, DE
• Michael Porsch · Minneapolis, US
• Samy M. Shendy · Cuyahoga Falls, US
• Lynn E. Brower · Solon, US
• John Pickett · Kimpton, GB
• Runhai Lu · Vernon Hills, US
• Frank Danko · Macedonia, US
• Jeffrey R. Bury · Macedonia, US

Key dates

• Filing date: Sep 16, 2002
• Grant date: Mar 1, 2005
• Expiry date: May 5, 2023

Classification

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

Abstract

A dry cast article and method for making the same, wherein the dry cast article includes an oligomeric dispersant that is a reaction product of two or three moieties is provided. To make a dry cast article, hydraulic cement, water, coarse aggregate, fine aggregate, optionally a surface active agent/air entraining agent, and an oligomeric dispersant are mixed and used to form a dry cast article from the mixture.