US3635835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelled acidic compositions
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
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Filing: 1969-08-20
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Granted: 1972-01-18
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Expires: 1989-08-20
Abstract
Abstract Aqueous acidic compositions gelled with a polymer having pendent amide or nitrile functions cross-linked by a monomer containing a plurality of -(CH2OR) groups bonded to amido nitrogen and a process for their preparation. The gelling system of this invention finds particular utility in explosive compositions based on an oxidizing agent and one or more fuels or sensitizers.
Inventors
- 👤 Marvin L Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B23/00; C06B23/001; C08; C08L; C08L33/00; C08L33/24; C08L33/26; C08L5/00; Y; Y10; Y10S; Y10S507/00; Y10S507/903; Y10S507/933
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
37 words
A composition of claim 1 wherein said polymer comprises about from 0.1 to 10 percent by weight of the liquid acidic composition and the monomer comprises about from 0.5 to 50 percent by weight of the polymer.
Claim 2
Dependent Claim
76 words
A composition of claim 1 wherein the polymer is selected from the group consisting of: A. polymers in which at least about 2 percent of the repeating units are , wherein X is selected from -CN and , the R''s being independently selected from the group consisting of hydrogen, lower alkyl, hydroxyalkyl or cyanoalkyl radicals having up to four carbon atoms, and B. polymers containing recurring units of the formula wherein R is as defined above.
Claim 3
Dependent Claim
10 words
A composition of claim 3 wherein the polymer comprises polyacrylamide.
Claim 4
Dependent Claim
10 words
A composition of claim 3 wherein the polymer comprises polyacrylonitrile.
Claim 5
Dependent Claim
31 words
A composition of claim 3 wherein the copolymer comprises a copolymer of acrylaMide and acrylonitrile and each of said acrylamide and acrylonitrile comprises at least about 2 percent of said copolymer.
Claim 6
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises N,N''-bis(hydroxymethyl)urea.
Claim 7
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises N,N''-bis(hydroxymethyl)adipamide.
Claim 8
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises N,N'',N''''-tris(hydroxymethyl)melamine.
Claim 9
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises hexakis(hydroxymethyl)melamine.
Claim 10
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises N,N''-bis(hydroxymethyl)hexamethylenedinitramine.
Claim 11
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises N,N''-bis(hydroxymethyl)-1,6-bis(methylsulfonamido)hexane.
Claim 12
Dependent Claim
11 words
A composition of claim 3 wherein the cross-linking monomer comprises bis(hydroxymethyl)formamide.
Claim 13
Dependent Claim
80 words
A process for gelling aqueous acidic compositions which comprises bringing into contact, in an aqueous composition having a pH of less than 6, A. at least one polymer containing a plurality of pendent substituent groups selected from amide and nitrile functions, amide nitrogen atoms bearing at least one hydrogen and B. at least one cross-linking monomer containing a plurality of -CH2OR groups bonded to nitrogen wherein R is selected from hydrogen and lower alkyl of up to four carbon atoms.
Claim 14
Dependent Claim
36 words
A process of claim 14 wherein the polymer comprises about from 0.1 to 10 percent by weight of the total composition and said monomer comprises about from 0.5 to 50 percent by weight of said polymer.
Claim 15
Dependent Claim
10 words
A process of claim 15 wherein the polymer comprises polyacrylamide.
Claim 16
Dependent Claim
21 words
A process of claim 15 wherein the polymer comprises polyacrylonitrile. 18 A polymer of claim 15 wherein the monomer comprises N,N''-bis(hydroxymethyl)urea.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |