Compositions of viscoelastic surfactant and hydrophobically modified polymer as aqueous thickeners

US9080043B2 · kind B2 · utility

Assignee

• Akzo Nobel Chemicals International B.V · NL

Inventors

• Qingwen Wendy Yuan-Huffman · Montgomery, US
• Klin A. Rodrigues · Signal Mountain, US
• Jian Zhou · Chongqing, CN
• Stuart Holt · Highland Park, US
• Elliot I. Band · Tarrytown, US

Key dates

• Filing date: Dec 15, 2011
• Grant date: Jul 14, 2015
• Expiry date: Dec 15, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/92
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An aqueous viscoelastic composition is provided comprising at least one viscoelastic surfactant, and at least one hydrophobically modified polymer, which is formed from polymerization of ethylenically unsaturated monomers; has a number average molecular weight of from 1,000 to 100,000 Da; and to a level of at least 0.1 mole %, based on the amount of monomer units in the polymer, contains monomeric units each covalently bonded to a pendant, optionally alkoxylated, hydrocarbyl group having from 6 to 40 carbon atoms, said pendant, optionally alkoxylated, hydrocarbyl group being connected to the backbone of said hydrophobically modified polymer via a non-ester containing linking group.