US4510094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum complex
Assignee: 3M Co
•
Filing: 1983-12-06
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Granted: 1985-04-09
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Expires: 2003-12-06
Abstract
Abstract A process for the addition of compounds containing silicon-bonded hydrogen to compounds containing aliphatic unsaturation. The process is activated by actinic radiation and is conducted in the presence of a platinum complex having one cyclopentadienyl group that is eta-bonded to the platinum atom and three aliphatic groups that are sigma-bonded to the platinum atom.
Inventors
- 👤 Timothy J. Drahnak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:09
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F15/00; C07F15/0006; C07F15/0086; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08G77/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
A platinum complex having the formula ##STR16## wherein Cp' represents a cyclopentadienyl group that is eta-bonded to the platinum atom and is also bonded to the silicon atom of an organosilyl group; each of R 1 , R 2 , and R 3 represents an aliphatic group having from one to eighteen carbon atoms, said R 1 , R 2 , and R 3 groups being sigma-bonded to the platinum atom each R 4 can be the same or different and represents a monovalent hydrocarbyl group selected from the group consisting of saturated linear aliphatic groups having 1 to 18 carbon atoms, saturated branched aliphatic groups having 3 to 18 carbon atoms, alicyclic groups having 4 to 18 carbon atoms, aryl groups having 6 to 14 carbon atoms, and ##STR17## R 5 is R 4 or ##STR18## where r is zero or an integer of 1 to 100; and q is one or two, with the proviso that when q is one, R 5 is R 4 , and when q is two, R 5 is ##STR19## and that in the complex no more than 50% of the R 4 groups are ##STR20## groups.
Claim 2
Dependent Claim
194 words
A platinum complex having the formula ##STR16## wherein Cp' represents a cyclopentadienyl group that is eta-bonded to the platinum atom and is also bonded to the silicon atom of an organosilyl group; each of R 1 , R 2 , and R 3 represents an aliphatic group having from one to eighteen carbon atoms, said R 1 , R 2 , and R 3 groups being sigma-bonded to the platinum atom each R 4 can be the same or different and represents a monovalent hydrocarbyl group selected from the group consisting of saturated linear aliphatic groups having 1 to 18 carbon atoms, saturated branched aliphatic groups having 3 to 18 carbon atoms, alicyclic groups having 4 to 18 carbon atoms, aryl groups having 6 to 14 carbon atoms, and ##STR17## R 5 is R 4 or ##STR18## where r is zero or an integer of 1 to 100; and q is one or two, with the proviso that when q is one, R 5 is R 4 , and when q is two, R 5 is ##STR19## and that in the complex no more than 50% of the R 4 groups are ##STR20## groups.
Claim 3
Dependent Claim
40 words
A platinum complex according to claim 1 selected from the group consisting of: (η 5 -trimethylsilylcyclopentadienyl)trimethylplatinum, (η 5 -phenyldimethylsilylcyclopentadienyl)trimethylplatinum, (1,3-bis[(η 5 -cyclopentadienyl)trimethylplatinum]tetramethyldisiloxane, 1,3,5-tris[(η 5 -cyclopentadienyl)trimethylplatinum]pentamethyltrisiloxane, and trimethylplatinumcyclopentadienyl terminated polysiloxane having random units of ##STR21## where Cp' represents the cyclopentadienyl group.
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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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |