US4357260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersible xanthan gum composite
Assignee: Monsanto Co
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Filing: 1980-05-08
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Granted: 1982-11-02
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Expires: 2000-05-08
Abstract
Abstract Fumed silica is added to xanthan gum beer prior to normal isolation procedures. The xanthan gum obtained from this beer is characterized in that it is more readily dispersible than xanthan gum from regular beer. This dispersible xanthan gum does not require vigorous agitation to attain homogenous, lump-free solutions.
Inventors
- 👤 Paul A. Sandford
- 👤 John K. Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:14
CPC Classifications
C; C08; C08L; C08L5/00; C08K; C08K3/00; C08K3/34; C08K3/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A process for producing a dispersible xanthan gum composite consisting essentially of xanthan gum and silica wherein the ratio xanthan gum to silica ranges from about 19:1 to 1:1 which comprises: (a) adding silica to a xanthan gum solution, (b) then isolating said composite from said solution, and (c) drying and milling the isolated composite.
Claim 2
Dependent Claim
55 words
A process for producing a dispersible xanthan gum composite consisting essentially of xanthan gum and silica wherein the ratio xanthan gum to silica ranges from about 19:1 to 1:1 which comprises: (a) adding silica to a xanthan gum solution, (b) then isolating said composite from said solution, and (c) drying and milling the isolated composite.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the silica is fumed silica and the solution is xanthan gum beer.
Claim 4
Dependent Claim
28 words
The process of claim 2 wherein the silica is first added to isopropanol to form a mix and then the mix is added to said xanthan gum beer.
Claim 5
Dependent Claim
55 words
A dispersible xanthan gum composite consisting essentially of xanthan gum and silica wherein the ratio xanthan gum to silica ranges from about 19:1 to 1:1, prepared by a process which comprises: (a) adding silica to a xanthan gum solution, (b) then isolating said composite from said solution, and (c) drying and milling the isolated composite.
Claim 6
Dependent Claim
55 words
A dispersible xanthan gum composite consisting essentially of xanthan gum and silica wherein the ratio xanthan gum to silica ranges from about 19:1 to 1:1, prepared by a process which comprises: (a) adding silica to a xanthan gum solution, (b) then isolating said composite from said solution, and (c) drying and milling the isolated composite.
Claim 7
Dependent Claim
16 words
The composite of claim 4 wherein the silica is fumed silica, silica aerogel, or silica xerogel.
Claim 8
Dependent Claim
11 words
The composite of claim 4 wherein the silica is fumed silica.
Claim 9
Dependent Claim
19 words
The composite of claim 6 wherein the fumed silica has a surface area of about 390±40 m 2 /gm.
Claim 10
Dependent Claim
17 words
The composite of claim 7 wherein the xanthan gum:silica ratio ranges from about 19:1 to about 6:1.
Claim 11
Dependent Claim
13 words
The composite of claim 8 wherein the xanthan gum:silica ratio is about 19:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |