Multi-layered polymer structure for medical products

US5998019A · kind A · utility

Assignee

• Baxter International Inc. · US

Inventors

• Larry A. Rosenbaum · Gurnee, US
• William H. Anderson · Hoffman Estates, US
• Lecon Woo · Wilmington, US
• Dean Laurin · Lake Zurich, US
• Angeles Lillian Buan · Crystal Lake, US
• Michael T. K. Ling · Vernon Hills, US
• Yuan-pang Samuel Ding · Vernon Hills, US
• Denise S. Hayward · Mundelein, US
• Joseph P. Hoppesch · McHenry, US
• Gregg Nebgen · Burlington, US
• Stanley Westphal · East Dundee, US

Key dates

• Filing date: Nov 16, 1993
• Grant date: Dec 7, 1999
• Expiry date: Nov 16, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31938
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A multiple layer structure comprising a skin layer composed of a polypropylene copolymer with styrene ethylene-butene styrene block copolymer within a range of 0-20% by weight skin layer, and, a radio frequency ("RF") susceptible layer adhered to the skin layer. The RF layer has a first component of a propylene based polymer, a second component of a nonpropylene polyolefin, a third component of a radio frequency susceptible polymer, and a fourth component of a polymeric compatibilizing agent.