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. 01, 1976
Filed:
Jun. 19, 1974
Applicant:
Inventors:
Joel Fantl, Springfield, MA (US);
Joseph G Martins, Ludlow, MA (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; D06L / ; D06L / ;
U.S. Cl.
CPC ...
8138 ; 8139 ; 210 51 ; 428262 ;
Abstract
Warp textile sizes comprising interpolymers of vinyl esters are recovered by extraction of the interpolymer from woven cloth with an aqueous solvent to form an aqueous solution of the interpolymer. The interpolymmer is precipitated from the aqueous solution by adjusting the alkali metal ion concentration of the solution within defined limits and adding acid to reduce the pH to the range of 1 to 3. The precipitated polymer is isolated from the supernatant solution and is reused by dissolving it in an aqueous base to yield a sizing solution.