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. 19, 1994
Filed:
Aug. 26, 1992
Applicant:
Inventor:
Allen R Syrinek, Richmond, TX (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
134 2217 ; 134 221 ; 134 2211 ; 134 2213 ; 134 2214 ; 134 2217 ; 134 251 ; 134 254 ; 134 29 ; 134 40 ; 252D / ;
Abstract
A method for cleaning plastic objects, especially for recycling, whereby liquid surfactant and liquid caustic are added as separate feed streams to water to create a cleaning solution. The concentrations of surfactant and caustic in the cleaning solution are periodically monitored so that the feed rates can be adjusted as necessary to maintain the optimum concentrations of each component.