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. 11, 1981
Filed:
Feb. 19, 1980
Krishna K Rao, Paterson, NJ (US);
National Starch and Chemical Corporation, Bridgewater, NJ (US);
Abstract
In an improved process for preparing discrete particles from solution polymers in which water and neutralizing agent are added to the polymer to form a suspension, the organic solvent is removed therefrom, and the particles are collected by filtration, washing and drying, the suspension is formed by co-feeding the flowable polymer and the aqueous phase containing neutralizing agent into a reactor vessel under specified conditions; stirring the reactants; and discharging the resultant suspension from the reactor vessel, with all steps being carried out in a continuous manner. In one embodiment of the process, additional neutralizing agent, which is preferably sodium hydroxide, is added to the suspension during removal of the solvent therefrom.