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:
Mar. 26, 1996
Filed:
May. 23, 1994
Maciej Kiedik, Kedzierzyn-Kozle, PL;
Andrzej Krueger, Kedzierzyn-Kozle, PL;
Jo/ zef Ko t, Kedzierzyn-Kozle, PL;
Antoni Korek, Kedzierzyn-Kozle, PL;
Wojciech Balcerowiak, Kedzierzyn-Kozle, PL;
Jacek Hetper, Kedzierzyn-Kozle, PL;
Maria Majchrzak, Kedzierzyn-Kozle, PL;
Jan Niedziela, Kobylice, PL;
Ryszard Kosciuk, K dzierzyn-Kozle, PL;
Anna Rzodeczko, K dzierzyn-Kozle, PL;
Jerzy Mro/ z, K dzierzyn-Kozle, PL;
Zbigniew Swiderski, K dzierzyn-Kozle, PL;
Instytut Ciezkiej Syntezy Organicznej Blachownia, Kedzierzyn-Kozle, PL;
Zaklady Chemiczne Blachownia, Kedzierzyn-Kozle, PL;
Abstract
In the process of bisphenol-A systhesis a method for controlling the water content of the resultant cation-exchanger bed wherein an acid ion-exchanger resin in the form of a sulphonated styrene-divinylbenzene copolymer is washed with phenol and the resulted washing is contacted with a basic ion-exchanger resin. Water is removed from the washing by distillation, and the dewatered phenol is recycled to wash the cation-exchanger bed. The catalyst bed is then washed with a mixture of phenol acetone and water, and this washing is contacted with the basic ion-exchange resin and recycled to wash the cation exchanger bed so as to obtain the desired moisture content.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile