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:
Dec. 01, 1998
Filed:
Aug. 01, 1997
Robert Gabriel Petrella, Allentown, PA (US);
John Joseph Koch, Coplay, PA (US);
Thomas William Bodnar, Macungie, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method for producing water-blown molded flexible polyurethane foam which comprises reacting and foaming in one step in a mold a reaction mixture comprising a polyol, an organic polyisocyanate, a urethane catalyst composition and water and a trimerization catalyst which is a quaternary ammonium salt or an alkali metal or alkaline earth metal salt of a Bronsted acid having a pKa of >1, characterized in that the trimerization catalyst is present in an amount from about 0.005 to 0.04 gram milliequivalents per 100 grams of polyol. The preferred trimerization catalyst is an alkali metal N-(2-hydroxyphenyl)methyl glycinate, especially an alkali metal N-(2-hydroxy-5-nonylphenyl)methyl-N-methyl glycinate.