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:
Oct. 13, 1998
Filed:
Sep. 30, 1996
Applicant:
Inventors:
Arun Savalaram Jadhav, Maharashtra, IN;
Jayarani Purushotham, Maharashtra, IN;
Sudhir Sharad Kulkarni, Maharashtra, IN;
Subhash Pundlik Vernekar, Maharashtra, IN;
Assignee:
National Chemical Laboratory, Maharashtra, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B01D / ;
U.S. Cl.
CPC ...
428447 ; 95 45 ; 95 47 ; 95 51 ; 95 53 ; 95 54 ; 96 13 ; 96 14 ;
Abstract
The present invention provides a process for preparing membranes using novel silicon containing polyarylates of Formula I ##STR1## where R.sub.1 to R.sub.8 represent hydrogen, alkyl groups containing 1 to 5 methylene group or halogen atoms, R.sub.9 and R.sub.10 represents alkyl groups containing 1 to 5 carbon atoms or CF.sub.3 group and R.sub.11 and R.sub.12 represent alkyl groups with 1 to 5 carbon atoms or phenyl groups.