US4176111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture curable organopolysiloxanes
Assignee: General Electric Co
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Filing: 1978-07-24
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Granted: 1979-11-27
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Expires: 1998-07-24
Abstract
Abstract Organopolysiloxanes are provided having terminal 1,3-dicarbonyl cyclic organo siloxy units curable to the solid elastomeric state upon exposure to moisture under ambient conditions. The moisture curable organopolysiloxanes are useful as encapsulants, caulking compounds, adhesives, etc.
Inventors
- 👤 James A. Cella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/08; C08K; C08K5/00; C08K5/54; C08L83/06; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/18; C08G77/20; C08G77/22; C08G77/24; C08G77/26; C08G77/28; C08G77/70; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
Moisture curable organopolysiloxane compositions comprising an organopolysiloxane consisting essentially of chemically combined units of the formula, ##STR10## and having terminal siloxy units of the formula, ##STR11## where R is a C.sub.(1-13) monovalent organic radical, R 1 is selected from hydrogen, halogen and R, X and Y are divalent radicals selected from --O--, --S-- and ##STR12## Z is a divalent C.sub.(1-13) organic radical selected from alkylene, cycloalkylene, arylene and a fused ring structure, b and c are equal to 0 or 1, R 2 is selected from hydrogen and R, and d is a whole number having a value of 0 or 1.
Claim 2
Dependent Claim
102 words
Moisture curable organopolysiloxane compositions comprising an organopolysiloxane consisting essentially of chemically combined units of the formula, ##STR10## and having terminal siloxy units of the formula, ##STR11## where R is a C.sub.(1-13) monovalent organic radical, R 1 is selected from hydrogen, halogen and R, X and Y are divalent radicals selected from --O--, --S-- and ##STR12## Z is a divalent C.sub.(1-13) organic radical selected from alkylene, cycloalkylene, arylene and a fused ring structure, b and c are equal to 0 or 1, R 2 is selected from hydrogen and R, and d is a whole number having a value of 0 or 1.
Claim 3
Dependent Claim
96 words
Moisture curable organopolysiloxane compositions comprising an organopolysiloxane consisting essentially of chemically combined units of the formula, ##STR13## and having terminal siloxy units of the formula, ##STR14## where R 3 is a C.sub.(4-12) alkyl radical, R 1 is selected from hydrogen, halogen and C.sub.(1-13) monovalent organic radicals, X and Y are divalent radicals selected from --O--, --S-- and ##STR15## Z is a divalent C.sub.(1-13) organic radical selected from alkylene, cycloalkylene, arylene and a fused ring structure, b and c are equal to 0 or 1, and R 2 is selected from hydrogen and C.sub.(1-13) monovalent organic radicals.
Claim 4
Dependent Claim
96 words
Moisture curable organopolysiloxane compositions comprising an organopolysiloxane consisting essentially of chemically combined units of the formula, ##STR13## and having terminal siloxy units of the formula, ##STR14## where R 3 is a C.sub.(4-12) alkyl radical, R 1 is selected from hydrogen, halogen and C.sub.(1-13) monovalent organic radicals, X and Y are divalent radicals selected from --O--, --S-- and ##STR15## Z is a divalent C.sub.(1-13) organic radical selected from alkylene, cycloalkylene, arylene and a fused ring structure, b and c are equal to 0 or 1, and R 2 is selected from hydrogen and C.sub.(1-13) monovalent organic radicals.
Claim 5
Dependent Claim
13 words
A composition in accordance with claim 1, where the organopolysiloxane is a polydimethylsiloxane.
Claim 6
Dependent Claim
14 words
A composition in accordance with claim 2, where R 3 is a dodecyl radical.
Claim 7
Dependent Claim
14 words
A moisture curable organopolysiloxane composition in accordance with claim 1, reinforced with silica filler.
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) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |