US4429093A
Expired / Lapsed
US
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Cyclic perfluoroaliphaticdisulfonimides as polymerization catalysts
Assignee: 3M Co
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Filing: 1983-03-07
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Granted: 1984-01-31
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Expires: 2003-03-07
Abstract
Abstract Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.
Inventors
- 👤 Robert J. Koshar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:11
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/15; C07D285/36; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
Curable compositions, comprising cationically-sensitive monomers and a catalytically effective amount of acidic cyclic perfluoroaliphaticdisulfonimides or their salts comprising compounds of the formula: ##STR4## wherein R f is perfluoroalkylene having 2 to 4 catenary carbon atoms or perfluorocycloalkylene having 4 to 7 ring atoms, R f optionally being substituted by one or more straight chain, branched, or cyclic perfluoroalkyl groups of 1 to 12 carbon atoms, with R f having a total of up to 14 carbon atoms; M is a cation with a valence equal to n; and n is an integer with a value of 1 to 5.
Claim 2
Dependent Claim
99 words
Curable compositions, comprising cationically-sensitive monomers and a catalytically effective amount of acidic cyclic perfluoroaliphaticdisulfonimides or their salts comprising compounds of the formula: ##STR4## wherein R f is perfluoroalkylene having 2 to 4 catenary carbon atoms or perfluorocycloalkylene having 4 to 7 ring atoms, R f optionally being substituted by one or more straight chain, branched, or cyclic perfluoroalkyl groups of 1 to 12 carbon atoms, with R f having a total of up to 14 carbon atoms; M is a cation with a valence equal to n; and n is an integer with a value of 1 to 5.
Claim 3
Dependent Claim
34 words
Curable compositions according to claim 1, wherein said cationically-sensitive monomer is selected from the group consisting of 1,2-, 1,3-, and 1,4-cyclic ethers, vinyl ethers, N-vinyl compounds, ethylenically unsaturated hydrocarbons, cyclic formals, and cyclic organosiloxanes.
Claim 4
Dependent Claim
21 words
Curable compositions according to claim 1, wherein said cationically-sensitive monomer comprises epoxide having an epoxy equivalency of from 1 to 6.
Claim 5
Dependent Claim
129 words
A process for polymerizing cationically sensitive monomers, comprising the steps of: (a) mixing with said monomers a catalytically effective amount of acidic cyclic perfluoroaliphaticdisulfonimide or salt thereof comprising a compound of the formula: ##STR5## wherein R f is perfluoroalkylene having 2 to 4 catenary carbon atoms or perfluorocycloalkylene having 4 to 7 ring atoms, R f optionally being substituted by one or more straight chain, branched, or cyclic perfluoroalkyl groups of 1 to 12 carbon atoms, with R f having a total of up to 14 carbon atoms, M is a cation with a valence equal to n; and n is an integer with a value of 1 to 5, thereby forming a mixture; and (b) allowing said mixture to polymerize, or heating said mixture to effect polymerization thereof.
Claim 6
Dependent Claim
129 words
A process for polymerizing cationically sensitive monomers, comprising the steps of: (a) mixing with said monomers a catalytically effective amount of acidic cyclic perfluoroaliphaticdisulfonimide or salt thereof comprising a compound of the formula: ##STR5## wherein R f is perfluoroalkylene having 2 to 4 catenary carbon atoms or perfluorocycloalkylene having 4 to 7 ring atoms, R f optionally being substituted by one or more straight chain, branched, or cyclic perfluoroalkyl groups of 1 to 12 carbon atoms, with R f having a total of up to 14 carbon atoms, M is a cation with a valence equal to n; and n is an integer with a value of 1 to 5, thereby forming a mixture; and (b) allowing said mixture to polymerize, or heating said mixture to effect polymerization thereof.
Claim 7
Dependent Claim
21 words
A process according to claim 4, wherein said cationically-sensitive monomer comprises epoxide having an epoxy equivalency of from 1 to 6.
References Cited (Backward Citations)
US4247674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |