Hydrophobically modified poly(acrylic acid) [PAA] and process of preparation thereof

US7572863B2 · kind B2 · utility

Assignees

• COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH · IN
• ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS · FR

Inventors

• Manohar Virupax Badiger · Pune, IN
• Prakash Purushot Wadgaonkar · Jamkhed, IN
• Ashish Kishori Lele · Jamkhed, IN
• Aarti Subhash Shedge · Jamkhed, IN
• Dominque Hourdet · Paris, FR
• Patrick Perrin · Rancho Palos Verdes, US
• Christophe Chassenieux · Paris, FR

Key dates

• Filing date: Sep 6, 2005
• Grant date: Aug 11, 2009
• Expiry date: May 30, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/14
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to the development of hydrophobically modified polymers [HMPs], which have emerged as promising materials in diverse fields such as paints, cosmetics, oils, food and textiles. They are used as thickeners in these applications. In our study, the hydrophobic modification on PAA was performed using hydrophobic compounds obtained from naturally occurring materials such as Cashew Nut Shell Liquid, [CNSL]. The DCCI coupling method was chosen for the hydrophobic modification of PAA. A series of hydrophobically modified PAAs were synthesized with different degrees of hydrophobic contents and were characterized by solution rheology.