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. 03, 1979
Filed:
Nov. 21, 1977
Applicant:
Inventors:
Sim K Lim, Stamford, CT (US);
Arnold E Bloomquist, Crystal Lake, IL (US);
Raymond J Schaper, Pittsburgh, PA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; D21H / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 1621 / ; 260 / ; 260 / ; 260 / ; 210 54 ; 526207 ; 526292 ; 526303 ; 526305 ; 526307 ; 526287 ; 260 / ;
Abstract
Self-inverting emulsion polymers and their use as drainage aids, retention aids, saveall flotation aids and process water flocculants. The polymers are copolymers and homopolymers based on acrylamide, polymerized in the presence of water, an inert hydrophobic liquid, free radical catalyst and an emulsifier having a HLB of at least 7.