Structured acrylate copolymer thickeners

US8673277B2 · kind B2 · utility

Assignee

• Lubrizol Advanced Materials, Inc. · US

Inventors

• Krishnan Tamareselvy · Somerville, US
• Deborah S. Filla · Twinsburg, US
• Steven Smith · Austin, US
• David L. Dashiell · Lakewood, US
• Gary W. Gray · Adrian, US
• Yi Yang · Bound Brook, US
• John J. Mullay · Mentor, US

Key dates

• Filing date: Jul 7, 2011
• Grant date: Mar 18, 2014
• Expiry date: Jul 7, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31928
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed are multi-staged acrylic based core-shell polymers comprising a linear core polymer and at least one subsequently polymerized shell polymers is crosslinked. The core-shell polymers surprisingly provide desirable rheological, clarity, and aesthetic properties in aqueous surfactant containing compositions, particularly at low pH.