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, 1987
Filed:
Dec. 28, 1983
Applicant:
Inventors:
Menahem A Kraus, St. Louis, MO (US);
Milton K Murphy, St. Charles, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 16 ; 55 78 ; 55158 ;
Abstract
Polyphosphazenes are disclosed as gas separation membranes which exhibit effective preferential selectivity and permeabilities for acid gases relative to non-acid gases contained in feed gas stream mixtures, particularly where the acid gases are mixed with gaseous hydrocarbons. The polyphosphazenes are rubbery polymers having attractive acid gases transport properties and improved thermal and chemical stability. Processes utilizing polyphosphazene membranes for separating acid gases from gasous mixtures containing non-acid gases are also disclosed.