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:
May. 04, 1982
Filed:
Dec. 29, 1980
Applicant:
Inventors:
Lewis D Morse, Pittsburgh, PA (US);
Kenneth W Dixon, Thornton, PA (US);
Assignee:
Calgon Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
524458 ; 524459 ; 524460 ; 524801 ; 526199 ; 526200 ; 526201 ; 526202 ; 526203 ; 526207 ; 525366 ; 528 44 ; 528137 ; 528232 ; 528254 ; 528274 ; 528336 ; 528373 ; 528408 ; 524733 ; 524804 ;
Abstract
Polymerization method utilizing a three-phase system: water-in-oil-in-water or oil-in-water-in-oil comprising the steps (a) adding the monomer material to be polymerized into the innermost water or oil phase; (b) adding, with mechanical agitation, the product of Step a to the middle oil or water phase, said phase containing appropriate surfactant, whereby an emulsion is formed; (c) adding, with mechanical agitation, the emulsion product of Step b to the outermost water or oil phase, said phase containing appropriate surfactant, wherein polymerization proceeds in the innermost water or oil phase until complete.