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:
Nov. 23, 2004
Filed:
May. 20, 2002
Rene Aerts, Louvain-la-Neuve, BE;
Mark Maria Herman Alma Boelens, Louvain-la-Neuve, BE;
Gyula Imre Dreisziger, Louvain-la-Neuve, BE;
Parminder Singh Sangha, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A polyol combination having up to a total of about 100 parts by weight (1) from about 95.1 to about 99.9 parts by weight of a first polyol having a nominal average functionality higher than about 4.5, an equivalent molecular weight in the range of from about 1500 to about 2500, a hydroxyl value in the range of from about 25 to about 35 mg KOH/g and an ethylene oxide content in the range of from about 10 to about 30% by weight based on total weight of said first polyol, and (2) from about 0.1 to about 4.9 parts by weight of a second polyol having a nominal average functionality in the range of from about 2.2 to about 6, an equivalent molecular weight in the range of from about 1000 to about 3000 and an ethylene oxide content of at least 50% by weight based on total weight of said second polyol, wherein the polyol combination is essentially free of stably dispersed polymer particles. The polyol combination is very suitable for application in formulations for preparing polyurethane foams for sound deadening applications.