Hydrophobically associating copolymers

US8783356B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Roland Reichenbach-Klinke · Traunstein, DE
• Thomas Pfeuffer · Bad Waldsee, DE
• Kati Schmidt · Shanghai, CN
• Thomas Ostrowski · Mannheim, DE
• Reinhold J. Leyrer · Schifferstadt, DE
• Yulia Fogel · Traunstein, DE
• Stefan Friedrich · San Gabriel, US
• Peter Gaeberlein · Magdeburg, DE
• Andrea Orleans · Trostberg, DE
• Manfred Schuhbeck · Trostberg, DE
• Marcus Guzmann · Bad Windsheim, DE
• Marcus Rösch · Oppenheim, DE
• Björn Langlotz · Trostberg, DE

Key dates

• Filing date: Nov 19, 2012
• Grant date: Jul 22, 2014
• Expiry date: Nov 19, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/603
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Water-soluble, hydrophobically associating copolymers which comprise new types of hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether group with block structure comprising a hydrophilic polyalkylene oxide block which consists essentially of ethylene oxide groups, and a terminal, hydrophobic polyalkylene oxide block which consists of alkylene oxides with at least 4, preferably at least 5 carbon atoms.