US3615802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic bituminous cutback compositions and process
Assignee: Armour Industrial Chemical Co
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Filing: 1969-10-03
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Granted: 1971-10-26
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Expires: 1989-10-03
Abstract
Abstract Thickened thixotropic bituminous cutback compositions comprising bituminous material, bituminous solvent and monomeric disubstituted urea formed by the in situ reaction of a long chain aliphatic amine and isocyanate, useful as adhesives, caulking compositions, and coatings.
Inventors
- 👤 Roy J Betty Jr
- 👤 Robert D Timmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/21
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
The composition of claim 1 wherein said amine is a primary monoamine selected from the group consisting of N-normal-alkyl, N-normal-alkenyl and N-secondary-alkyl amines.
Claim 2
Dependent Claim
39 words
The composition of claim 1 wherein said amine is an N-secondary-alkyl amine having the formula wherein x and y are integers of zero to about 19, provided the sum of x and y is from about 3 to 19.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein said isocyanate is a diisocyanate selected from the group consisting of toluene diisocyanate and aliphatic diisocyanates having from about six to 22 carbon atoms.
Claim 4
Dependent Claim
11 words
The composition of claim 4 wherein said diisocyanate is toluene diisocyanate.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein said bituminous material is asphalt.
Claim 6
Dependent Claim
31 words
The composition of claim 1 wherein said bituminous material is asphalt, said amine is selected from the groUp consisting of N-normal-alkyl, N-normal-alkenyl and N-secondary-alkyl amines, and said isocyanate is toluene diisocyanate.
Claim 7
Dependent Claim
39 words
The composition of claim 7 wherein said amine is an N-secondary-alkyl amine having the formula wherein x and y are integers of zero to about 15, provided the sum of x and y is from about 4 to 15.
Claim 8
Dependent Claim
18 words
The composition of claim 7 containing from about 4 to 8 weight percent of said monomeric disubstituted urea.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |