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:
Jul. 10, 1979
Filed:
May. 07, 1976
Applicant:
Inventor:
Joseph DelPico, Brockton, MA (US);
Assignee:
Abcor, Inc., Wilmington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210 / ; 2104 / ;
Abstract
In a process for the concentration of an aqueous polymeric latex, which latex comprises polymeric particles dispersed in an aqueous phase by a semipermeable membrane process, such as an ultrafiltration process and which latex is subject to destabilization, the improvement which comprises: adding to the latex a sufficient amount of a compatible surfactant to stabilize the latex and to maintain the dispersion of the polymeric particles in the aqueous phase of the latex during the concentration of the latex in a semipermeable membrane process.