The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Jun. 26, 2003
Wassana Apichatachutapan, Woodhaven, MI (US);
Raymond Neff, Northville, MI (US);
James Mullins, Lincoln Park, MI (US);
Theodore M. Smiecinski, Woodhaven, MI (US);
Thomas B. Lee, Southgate, MI (US);
Wassana Apichatachutapan, Woodhaven, MI (US);
Raymond Neff, Northville, MI (US);
James Mullins, Lincoln Park, MI (US);
Theodore M. Smiecinski, Woodhaven, MI (US);
Thomas B. Lee, Southgate, MI (US);
BASF Corporation, Florham Park, NJ (US);
Abstract
The subject invention provides a viscoelastic polyurethane foam being flame retardant and having a density of greater than two and a half pounds per cubic foot that comprises a reaction product of an isocyanate component, an isocyanate-reactive blend, and a chain extender. The isocyanate-reactive blend includes a first isocyanate-reactive component and a second isocyanate-reactive component. The first isocyanate-reactive component includes at least 60 parts by weight of ethylene oxide (EO) based on 100 parts by weight of the first isocyanate-reactive component and the second isocyanate-reactive component includes at most 30 parts by weight of EO based on 100 parts by weight of the second isocyanate-reactive component. The chain extender is reactive with the isocyanate component and has a backbone chain with from two to eight carbon atoms and is present in an amount of from 5 to 50 parts by weight based on 100 parts by weight of the foam. A composition useful in making the viscoelastic polyurethane foam is also disclosed.