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:
Aug. 01, 1978
Filed:
May. 20, 1976
Applicant:
Inventors:
Frederick Mahn, Verona, NJ (US);
Kenneth Breindel, Landing, NJ (US);
Clyde Scanley, Morristown, NJ (US);
David Sexsmith, Kinnelon, NJ (US);
Assignee:
Drew Chemical Corporation, Boonton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01d / ; C01d / ;
U.S. Cl.
CPC ...
23300 ; 2330 / ; 4232 / ; 252321 ;
Abstract
In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate does not adversely interfere with carbon dioxide absorption in subsequent production of sodium bicarbonate.