US4304906A
Expired / Lapsed
US
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Heteropolysaccharide S-84
Assignee: Monsanto Co
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Filing: 1979-09-19
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Granted: 1981-12-08
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Expires: 1999-09-19
Abstract
Abstract The new heteropolysaccharide S-84, prepared by fermentation of an unnamed Pseudomonas species, ATCC 31562 has valuable properties as a thickening, suspending and stabilizing agent in aqueous systems. It is especially useful in formulating explosive gels. Its chemical composition is within the following weight ranges of sugars: 8-15% glucuronic acid; 40-50% glucose; 35-45% mannose; 5-15% rhamnose; and 3-9% arabinose; it also contains 1-5% acetyl and 2-7% pyruvate groups.
Inventors
- 👤 Kenneth S. Kang
- 👤 George T. Veeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:16
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; B; B01; B01J; B01J19/00; B01J19/06; C06; C06B; C06B47/00; C06B47/14; C12N; C12N1/00; C12N1/20; C12N1/205; C12R; C12R2001/00; C12R2001/01; C12R2001/38; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
141 words
Heteropolysaccharide S-84, prepared by fermentation under controlled conditions of culture ATCC 31562, a Pseudomonas species; said S-84 containing 8-15% glucuronic acid, and the neutral sugars: mannose, glucose, rhamnose and arabinose in the approximate molar ratios of 35-45%; 40-50%; 5-15%; and 3-9%, respectively; 1-5% O-acetyl groups; 2-7% pyruvate groups and having the following physical properties: a 1% viscosity (measured on Brookfield Spindle No. 3) at 60 rpm of 800 cPs, at 6 rpm of 4,700 cPs; the gum being incompatible (precipitating) in ammonium polyphosphate; and compatible in CaCl 2 (saturated); 60% NH 4 NO 3 ; 1% Al 2 (SO 4 ) 3 .18H 2 O; 1% CaCl 2 .2H 2 O, and 1% KCl; and having viscosity measurements on a Wells-Brookfield microviscometer Model RVT-cP at 9.6 sec -1 in 0.1% KCl of 998 cPs and in 2.5 KCl of 1,360 cPs.
Claim 2
Dependent Claim
141 words
Heteropolysaccharide S-84, prepared by fermentation under controlled conditions of culture ATCC 31562, a Pseudomonas species; said S-84 containing 8-15% glucuronic acid, and the neutral sugars: mannose, glucose, rhamnose and arabinose in the approximate molar ratios of 35-45%; 40-50%; 5-15%; and 3-9%, respectively; 1-5% O-acetyl groups; 2-7% pyruvate groups and having the following physical properties: a 1% viscosity (measured on Brookfield Spindle No. 3) at 60 rpm of 800 cPs, at 6 rpm of 4,700 cPs; the gum being incompatible (precipitating) in ammonium polyphosphate; and compatible in CaCl 2 (saturated); 60% NH 4 NO 3 ; 1% Al 2 (SO 4 ) 3 .18H 2 O; 1% CaCl 2 .2H 2 O, and 1% KCl; and having viscosity measurements on a Wells-Brookfield microviscometer Model RVT-cP at 9.6 sec -1 in 0.1% KCl of 998 cPs and in 2.5 KCl of 1,360 cPs.
Claim 3
Dependent Claim
12 words
The heteropolysaccharide of claim 1, which contains less than 200 ppm Ca.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |