US3671562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea silicon product and the preparation thereof
Assignee: Union Carbide Corp
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Filing: 1968-09-12
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Granted: 1972-06-20
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Expires: 1988-09-12
Abstract
Abstract This invention relates to urea containing silicon compounds and the uses thereof, particularly as coupling agents on glass and to the similar use of substituted urea containing silicon compounds.
Inventors
- 👤 Enrico J Pepe
- 👤 James G Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:56
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; C08G77/22; C08G77/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
The novel silicon compound of claim 1 wherein the radical forms part of the compound having the formula: wherein R and n have the meaning described in claim 1; R1 Is a monovalent organic group bonded to silicon by a carbon to silicon bond, selected from the group consisting of alkyl, cycloalkyl, aryl, alkaryl, aralkyl, alkenyl, alkadienyl, cycloalkenyl, haloalkyl, halocycloalkyl, cyanoalkyl, cyanoaryl, cyanocycloalkyl, carboxyalkyl, carboxyaryl, carboxycycloalkyl, isocyanatoaryl, isocyanatocycloalkyl, alkyl carboxyalkyl, aryl carboxyalkyl, hydroxyalkyl, hydroxy(polyalkyleneoxy)alkyl, alkenoyloxyalkyl, epoxyalkyl, epoxy alkyloxyalkyl, aminoaryl and aminoalkyl; each R2 is hydrogen or R1; R3 is a hydrolyzable or condensible radical, selected from the group consisting of hydroxyl, alkoxy, acyloxy, aryloxy, amino and haloalkoxy; R4 is a member selected from the group consisting of hydrogen, alkyl, aryl and acyl; m is 0 or 1; a is 0, 1 or 2; b is 0, 1, 2 or 3; o is 1; p is equal to 3-a when m is 0, and when m is 1, p is 0; and q is 0 when p is equal to 3-a and q is 0 or a positive number when m is 1.
Claim 2
Dependent Claim
45 words
The process of producing urea substituted silicon compounds which comprises reacting a carbamate with an amino group of an aminoorganosilicon compound having the formula: wherein R, R1, R2, R3, R4, n, m, a, b, o, p, and q have the meaning described in claim 2.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |