Inhibition and delay of deposit formation in membrane processes

US6187195A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Zarges · Neunburg vorm Wald, DE
• Torsten Groth · Reinbek, DE
• Winfried Joentgen · Neunburg vorm Wald, DE
• Andreas Groschl · Leverkusen, DE

Key dates

• Filing date: May 10, 1999
• Grant date: Feb 13, 2001
• Expiry date: May 10, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A20/131
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to the use of polyaspartic acids and their mixtures with surfactants and emulsifiers for inhibiting or delaying deposit formation by sparingly soluble organic and inorganic components in the feed of a process that uses a membrane.