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:
Apr. 21, 2015
Filed:
May. 18, 2010
Sylvie DE Mars, Meise, BE;
Joris Karel Peter Bosman, Herselt, BE;
Sylvie De Mars, Meise, BE;
Joris Karel Peter Bosman, Herselt, BE;
Huntsman International LLC, The Woodlands, TX (US);
Abstract
A process for neutralizing an unneutralized polyether polyol prepared using a base catalyst according to the invention comprises the steps of addition of a polyprotic acid to the unneutralized polyether polyol, the highest pKa-value of the polyprotic acid being less than 3.5, wherein, per kilogram of unneutralized polyether polyol, 'A' moles of said polyprotic acid are added to the unneutralized polyether polyol, such that (n−1)*A<B<n*A, wherein ▪ B being the moles of protons necessary to completely neutralize a kilogram of unneutralized polyether polyol; ▪ n being the number of protons which said polyprotic acid can donate; removing water from said neutralized polyether polyol at a temperature between 100 deg C. and 160 deg C., providing dewatered neutralized polyether polyol with a water content of less than 1% w based upon the weight of the dewatered neutralized polyether polyol; removing the crystals formed during the steps of addition of acid and removal of water from the neutralized polyether polyol.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile