Solid material comminution or disintegration – Processes – With application of fluid or lubricant material
Reexamination Certificate
2005-06-29
2010-06-08
Vanoy, Timothy C (Department: 1793)
Solid material comminution or disintegration
Processes
With application of fluid or lubricant material
C241S024100
Reexamination Certificate
active
07731110
ABSTRACT:
A method of making abrasive compositions, and more particularly, it relates to a method of making precipitated silica abrasive compositions having excellent cleaning performance and lower abrasiveness with post-reactor sizing of the abrasive particles being performed directly via wet comminution and centrifugation, optionally followed by hydraulic chamber press filtering combined with vacuum dewatering and de-agglomeration is provided. By targeting a specific particle size range, it has been determined that higher pellicle film cleaning levels may be achieved without also increasing the dentin abrasion properties of the silica products themselves. As a result, dentifrices including such classified abrasive silica products, exhibiting particularly desirable cleaning benefits, can be provided for improved tooth polishing, whitening, and the like, without deleteriously affecting the hard tooth surfaces. Also encompassed within this invention also are products of this selective process scheme and dentifrices containing such particularly manufactured and classified silica products.
REFERENCES:
patent: 4040858 (1977-08-01), Wason
patent: 5205493 (1993-04-01), Adler et al.
patent: 5626715 (1997-05-01), Rostoker
patent: 6585960 (2003-07-01), Thomas et al.
patent: 6652611 (2003-11-01), Huang et al.
patent: 6855635 (2005-02-01), Schumacher et al.
patent: 7159803 (2007-01-01), Huang
patent: 7255852 (2007-08-01), Gallis et al.
patent: 7344988 (2008-03-01), Chelle
Notice of Allowance in U.S. Appl. No. 11/170,344, dated Oct. 16, 2006.
Ades Patricia L.
J.M. Huber Corporation
Rump Richard M
Tubach Cheryl J.
Vanoy Timothy C
LandOfFree
Method for making precipitated silica compositions and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making precipitated silica compositions and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making precipitated silica compositions and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4193242