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:
Nov. 26, 1991
Filed:
Dec. 29, 1989
Paul R Suitch, Milledgeville, GA (US);
A Taylor Coppage, Macon, GA (US);
Alan J Brown, Milledgeville, GA (US);
E.C.C. America Inc., Atlanta, GA (US);
Abstract
A method is described for forming bulked aggregates of mineral particles such as kaolins. An aqueous slurry of the mineral is treated with a source of a multi-valent cation to floc the mineral, polyacrylic is added and the slurry is then neutralized with a base to an alkaline pH. This treatment causes the polyacrylic acid to undergo cross-linking with the cations to form the polyacrylate which precipitates in situ on the mineral floc and preserves and retains the bulked, porous floc structure, whereby pore radius and volume of the treated mineral are increased. The products are useful as fillers or as coating pigments in paper manufacture.