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. 06, 1985
Filed:
May. 17, 1982
Applicant:
Inventor:
Christine A Costello, Coraopolis, PA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
526295 ; 526239 ; 526240 ; 526265 ; 526274 ; 526277 ; 526279 ; 526286 ; 526287 ; 526289 ; 526298 ; 5263072 ; 5263073 ; 5263076 ; 526311 ; 526312 ; 526314 ;
Abstract
The instant invention is directed to a polyampholyte polymer, having an intrinsic viscosity of 0.05 to 4.5 dl/g in 1.0 M NaCl, prepared from 32.5 to 90 percent acrylic acid and/or methacrylic acid, 1.5 to 65 percent, by weight, of acrylamide and 0.5 to 25 percent, by weight, of dimethyldiallyl ammonium chloride and/or diethyldiallyl ammonium chloride.