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:
Jun. 04, 1985
Filed:
Feb. 11, 1983
Applicant:
Inventors:
Reiner Schnee, Darmstadt-Arheilgen, DE;
Jurgen Masanek, Pfungstadt, DE;
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
523313 ; 523346 ; 523348 ; 524458 ; 524460 ; 524801 ; 524555 ; 526 64 ; 526 65 ; 5262922 ; 5263031 ; 526317 ;
Abstract
What is disclosed is a method for making a water-in-oil emulsion of a water soluble polymer of high molecular weight of polymerization of an aqueous monomer solution emulsified in an oil, even in large batches or continuously, comprising not moving the emulsion in a turbulent flow pattern at the start of polymerization and not mixing the emulsion at the start of polymerization with portions of emulsion which have been exposed to polymerization conditions for less time. Once polymerization has started, it is continued by the action of an initiator which decomposes to yield free radicals.