Polyurethane foams having improved retention of insulative properties and methods for the preparation thereof

US5373030A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Warren A. Kaplan · Lake Jackson, US
• Douglas R. Moore · Vernon Hills, US
• Ricky L. Tabor · Lake Jackson, US
• Alan K. Schrock · Midland, US

Key dates

• Filing date: Jun 29, 1993
• Grant date: Dec 13, 1994
• Expiry date: Jun 29, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyurethane foams can be prepared which have improved retention of insulative properties. The foams are prepared from formulations including a glycerine initiated ethoxylated polyol prepared from a formulation including from about two to about three moles of ethylene oxide per mole of glycerine initiator and/or a tri- to octa-functional substantially linear hydroxy alkane initiated ethylene carbonate ethoxylated polyol prepared from a formulation including from about 2 to about 15 moles of ethylene carbonate per mole of initiator wherein the ratio of moles of ethylene carbonate to initiator functionality is from 0.5 to less than 2.