US3622534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelled elastomer compositions
Assignee: Armour Industrial Chemical Co
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Filing: 1968-06-27
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Granted: 1971-11-23
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Expires: 1988-06-27
Abstract
Abstract Thickened elastomer compositions comprising a synthetic elastomer such as butyl or neoprene rubber, elastomeric solvent such as textile spirits and a di-substituted urea such as that formed by the in situ reaction of a long chain aliphatic amine and isocyanate, which are useful as rubber adhesives, sealants, and coatings.
Inventors
- 👤 Robert D Timmons
- 👤 Roy J Betty Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/21; C08K5/29
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
39 words
The composition of claim 1 wherein said amine has an aliphatic group containing from six to 22 carbon atoms and is selected from the group consisting of branched and straight hydrocarbon chain, saturated and olefinically unsaturated, cyclic and aralkyl.
Claim 2
Dependent Claim
16 words
The composition of claim 2 wherein said amine is an N-secondary-alkyl amine having the general formula:
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said diisocyanate is toluene diisocyanate.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein said monoamine has from six to 22 carbon atoms and said diisocyanate is toluene diisocyanate.
Claim 5
Dependent Claim
12 words
The composition of claim 5, said amine being an N-secondary-alkyl primary amine.
Claim 6
Dependent Claim
17 words
The composition of claim 1 wherein said solvent is present in about 40 to 60 weight percent.
Claim 7
Dependent Claim
18 words
The composition of claim 1 wherein said di-substituted urea is present in about 4 to 8 weight percent.
Claim 8
Dependent Claim
37 words
The composition of claim 1 wherein said solvent is selected from the group consisting of petroleum distillates, kerosene, fuel oils, mineral spirits, gasoline, turpentine, textile spirits, naphtha, benzene, toluene, carbon tetrachloride, methylisobutyl-ketone, and ethylene glycol monomethyl ether.
Claim 9
Dependent Claim
93 words
A process for producing thickened elastomer compositions comprising; mixing synthetic elastomer selected from the group consisting of butyl and neoprene rubbers with about 30 to 95 weight percent of an organic solvent for said elastomer; and adding thereto an aliphatic hydrocarbon monoamine and diisocyanate selected from the group consisting of aromatic diisocyanates and aliphatic diisocyanates wherein the aliphatic group contains about six to 22 carbon atoms, said amine and diisocyanate added in the mole ratio of from 2:1 to 2.8:1 to produce in situ about 2 to 10 weight percent of di-substituted urea.
Claim 10
Dependent Claim
35 words
The process of claim 10, said solvent being selected from the group consisting of petroleum distillates, kerosene, fuel oils, mineral spirits, gasoline, turpentine, textile spirits, naphtha, benzene, toluene, carbon tetrachloride, methylisobutylketone, ethylene glycol monomethyl ether.
Claim 11
Dependent Claim
14 words
The process of claim 10, said solvent being present in from 40-60 weight percent.
Claim 12
Dependent Claim
14 words
The process of claim 10, said urea being present in from 4-8 weight percent.
Claim 13
Dependent Claim
19 words
The process of claim 10, said amine being added with stirring, and then said isocyanate being added with stirring.
Claim 14
Dependent Claim
15 words
The process of claim 10, said amine being an N-secondary-alkyl amine having the general formula:
Claim 15
Dependent Claim
21 words
The process of claim 10 wherein said monoamine has from six to 22 carbon atoms and said diisocyanate is toluene diisocyanate.
References Cited (Backward Citations)
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Cited
US2925387A
Cited
US3350342A
Cited
US3358005A
Cited
US3242210A
Cited
US3478127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |