US4650826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized cyanoacrylate adhesives containing bis-trialkylsilyl esters of sulfuric acid
Assignee: Bayer AG
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Filing: 1985-04-08
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Granted: 1987-03-17
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Expires: 2005-04-08
Abstract
Abstract This invention relates to stabilized adhesives, to which silyl esters are added for stabilization.
Inventors
- 👤 Helmut Waniczek
- 👤 Wilfried Kniege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:37
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
Stabilized adhesives comprising anionically polymerizable monomeric olefins corresponding to the formula ##STR5## wherein X represents CN and COOR, Y represents halogen, SO 3 R and --COOR, and R represents a C 1 -C 20 alkyl or alkenyl group, a C 5 -C 10 cycloalkyl group or an aryl group, and a bis-trialkylsilyl ester of mono- , di- or tri-sulphuric acid corresponding to the formula ##STR6## wherein R 1 to R 6 are the same or different and represent a C 1 -C 10 alkyl, -aryl or -aralkyl group, and n rerpesents an integer of from 1 to 3, as a stabilizer.
Claim 2
Dependent Claim
101 words
Stabilized adhesives comprising anionically polymerizable monomeric olefins corresponding to the formula ##STR5## wherein X represents CN and COOR, Y represents halogen, SO 3 R and --COOR, and R represents a C 1 -C 20 alkyl or alkenyl group, a C 5 -C 10 cycloalkyl group or an aryl group, and a bis-trialkylsilyl ester of mono- , di- or tri-sulphuric acid corresponding to the formula ##STR6## wherein R 1 to R 6 are the same or different and represent a C 1 -C 10 alkyl, -aryl or -aralkyl group, and n rerpesents an integer of from 1 to 3, as a stabilizer.
References Cited (Backward Citations)
DE2128985A1
Cited
FR2535335A1
Cited
GB2129003A
Cited
GB2148313A
Cited
GB2148312A
Cited
US4565883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |