IP Library Granted Patent US 7,803,343
Granted Patent B2
US 7,803,343 · App. 11/823,436 · Granted Sep 28, 2010

Silica gel manufacturing method and gels made thereby

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Quick Facts
Patent No.
US 7,803,343
App. No.
11/823,436
Granted
Sep 28, 2010
Kind
B2
Abstract

New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like. Methods of production and use, as well as the novel gel materials themselves, particularly caustic and composite gels, are thus encompassed within this invention.

Claims (3)

1. A method of producing a silica gel material comprising the sequential process steps of a) initially producing a silicic acid sol through alkali metal silicate addition to a mineral acid at a target pH level of between 1.5 and 4.0; b) diluting said silicic acid sol in a hot water medium at a temperature of from 65 to 100° C., thereby solidifying said sol into a polysilicic acid gel; c) aging the resultant gel of step “b” in salt water; d) washing said aged gel of step “c” to remove excess salt; and e) drying said washed gel of step “d” to form a dry silica gel.

2. The method of claim 1 wherein said method is performed in an atypical silica gel manufacturing apparatus.

3. The method of claim 1 wherein the dry silica gel of step “e” is acidic.

Assignments (5)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jun 27, 2014
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: J.M. HUBER CORPORATION; CP KELCO U.S., INC.; HUBER ENGINEERED WOODS LLC
Reel/Frame 033247/0705 →
SECURITY INTEREST Recorded Nov 8, 2011
From: J.M. HUBER CORPORATION; CP KELCO U.S., INC.; HUBER ENGINEERED WOODS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 027279/0114 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2011
From: BANK OF AMERICA, N.A.
To: J.M. HUBER CORPORATION; 333 ASSOCIATES LLC; 333 PARTNERS LLC; CELTEGAN LLC; CP KELCO U.S., INC.; HUBER CST COMPANY; HUBER CST CORPORATION; HUBER ENERGY L.P.; HUBER ENERGY LLC; HUBER ENGINEERED WOODS LLC; HUBER EQUITY CORPORATION; HUBER INTERNATIONAL CORP.; HUBER RESOURCES CORP.; HUBER SOUTH TEXAS GP, LLC; HUBER SOUTH TEXAS LP, LLC; HUBER TIMBER INVESTMENTS LLC; HUBER TIMBER LLC; J.M. HUBER MICROPOWDERS INC.; JMH PARTNERS CORP.; KELCO COMPANY; ST. PAMPHILE TIMBER LLC; TABSUM, INC.; TARA INSURANCE GLOBAL LIMITED; QUINCY WAREHOUSES, INC. (FORMERLY UNDERGROUND WAREHOUSES, INC.
Reel/Frame 027158/0142 →
SECURITY AGREEMENT Recorded Mar 29, 2011
From: J.M. HUBER CORPORATION; 333 ASSOCIATES LLC; 333 PARTNERS LLC; CELTEGAN LLC; CP KELCO U.S., INC.; HUBER CST COMPANY; HUBER CST CORPORATION; HUBER ENERGY L.P.; HUBER ENERGY LLC; HUBER ENGINEERED WOODS LLC; HUBER EQUITY CORPORATION; HUBER INTERNATIONAL CORP.; HUBER RESOURCES CORP.; HUBER SOUTH TEXAS GP, LLC; HUBER SOUTH TEXAS LP, LLC; HUBER TIMBER INVESTMENTS LLC; HUBER TIMBER LLC; J.M. HUBER MICROPOWDERS INC.; JMH PARTNERS CORP.; KELCO COMPANY; ST. PAMPHILE TIMBER LLC; TABSUM, INC.; TARA INSURANCE GLOBAL LIMITED; UNDERGROUND WAREHOUSES, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 026042/0063 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 27, 2007
From: HUA, DUEN-WU; WITHIAM, MICHAEL C.; GODWIN, FRANCIS R.; SINCLAIR, FITZGERALD A.
To: J.M. HUBER CORPORATION
Reel/Frame 019615/0297 →