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Patent US4112220A successfully refreshed from Google Patents.
US4112220A
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Nitrate esters of galactomannan gums and methods for their synthesis
Assignee: IMC Chemical Group Inc
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Filing: 1974-10-29
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Granted: 1978-09-05
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Expires: 1994-10-29
Abstract
Abstract The present invention relates to nitrate esters of galactomannan gums and methods of making them comprising reacting a galactomannan gum with a nitrating acid. Nitrate esters of galactomannan gums are useful as thickeners and gelling agents for certain organic solvents.
Inventors
- 👤 William J. Carroll
- 👤 George L. Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:44
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; C08B37/0093; C08B37/0096
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
20 words
A nitrate ester of a galactomannan gum in which hydroxyl hydrogens of the galactomannan gum are replaced by nitro groups.
Claim 2
Dependent Claim
20 words
A nitrate ester of a galactomannan gum in which hydroxyl hydrogens of the galactomannan gum are replaced by nitro groups.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein said galactomannan gum is guar gum.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said galactomannan gum is locust bean gum.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein said nitrate ester of a galactomannan gum has a relative nitrogen content of 70 to 100%.
Claim 6
Dependent Claim
22 words
The composition of claim 1 wherein said nitrate ester of a galactomannan gum has a relative nitrogen content of 85 to 100%.
Claim 7
Dependent Claim
39 words
A thickened nitroalkane composition consisting essentially of a nitroalkane of 1 to 3 carbon atoms and nitrated galactomannan gum in a ratio of 98 to 88 parts by wt. nitroalkane to 2 to 12 parts by wt. galactomannan gum.
Claim 8
Dependent Claim
39 words
A thickened nitroalkane composition consisting essentially of a nitroalkane of 1 to 3 carbon atoms and nitrated galactomannan gum in a ratio of 98 to 88 parts by wt. nitroalkane to 2 to 12 parts by wt. galactomannan gum.
Claim 9
Independent Claim
27 words
A method of thickening a nitroalkane of 1 to 3 carbon atoms by mixing therewith from 2% by wt. to 12% by wt. of nitrated galactomannan gum.
Claim 10
Independent Claim
27 words
A method of thickening a nitroalkane of 1 to 3 carbon atoms by mixing therewith from 2% by wt. to 12% by wt. of nitrated galactomannan gum.
Claim 11
Dependent Claim
29 words
A method of gelling the composition of claim 7 by adding thereto a cross-linking agent selected from the group consisting of lead oxide, tetrabutyl titanate, tetra(2-ethylhexyl)titanate, and tetrastearyl titanate.
Claim 12
Dependent Claim
12 words
The method of claim 8 wherein said cross-linking agent is tetrabutyl titanate.
References Cited (Backward Citations)
US2883376A
Cited
US3534018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |