Patent US4748208A successfully refreshed from Google Patents.
US4748208A
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Curable elastomer composition
Assignee: EIDP Inc
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Filing: 1987-06-05
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Granted: 1988-05-31
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Expires: 2007-06-05
Abstract
Abstract A curable fluoroelastomer composition comprising: (a) a fluoroelastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer; (b) a curing accelerator comprising an iminum compound of the formula ##STR1## wherein R 1 is a substituted or unsubstituted aryl group, R 2 is an alkyl or halogenated alkyl group, a cycloalkyl or halogenated cycloalkyl group, or a substituted or unsubstituted aralkyl group, and X is a halogen atom; (c) a polyhydroxy compound as a cross-linking agent; and (d) a metal compound selected from a divalent metal hydroxide, a divalent metal oxide or a mixture thereof.
Inventors
- 👤 Michio Kasahara
- 👤 Hideaki Kodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08K; C08K5/00; C08K5/49; C08K5/5399; C08K13/00; C08K13/02; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
80 words
A curable fluoroelastomer composition comprising: (a) a fluoroelastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer, (b) as a curing accelerator, an iminum compound represented by the formula (1) ##STR10## wherein R 1 is a phenyl group, R 2 is a methyl group or a benzyl group, X is chlorine; (c) a polyhydroxy compound as a cross-linking agent; and (d) a metal compound selected from a divalent metal hydroxide, a divalent metal oxide or a mixture thereof.
Claim 2
Dependent Claim
80 words
A curable fluoroelastomer composition comprising: (a) a fluoroelastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer, (b) as a curing accelerator, an iminum compound represented by the formula (1) ##STR10## wherein R 1 is a phenyl group, R 2 is a methyl group or a benzyl group, X is chlorine; (c) a polyhydroxy compound as a cross-linking agent; and (d) a metal compound selected from a divalent metal hydroxide, a divalent metal oxide or a mixture thereof.
Claim 3
Dependent Claim
92 words
A curable fluoroelastomer composition according to claim 1, further comprising a sulfone compound, as a curing accelerator, represented by the formula: ##STR11## wherein R 5 and R 6 , are the same or different, and are each a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 carbon atoms, a substituted or unsubstituted cycloalkenyl group having 4 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 20 carbon atoms and a substituted or unsubstituted phenyl group.
Claim 4
Dependent Claim
26 words
A curable fluoroelastomer composition according to claim 2, wherein R 5 and R 6 are substituted or unsubstituted alkyl groups having 1 to 8 carbon atoms.
Claim 5
Dependent Claim
15 words
A curable fluoroelastomer composition according to claim 1, wherein said iminum compound is bis(benzyldiphenylphosphine)iminum chloride.
Claim 6
Dependent Claim
14 words
A curable fluoroelastomer composition according to claim 2, wherein said sulfone compound is dimethylsulfone.
Claim 7
Dependent Claim
17 words
A curable fluoroelastomer composition according to claim 1, wherein said polyhydroxy compound is bisphenol AF or hydroquinone.
Claim 8
Dependent Claim
106 words
A curable fluoroelastomer composition comprising: (a) 100 parts by weight of a fluoroelastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer, (b) 0.05 to 2.0 parts by weight of a curing accelerator comprising an iminum compound represented by the formula (1) ##STR12## wherein R 1 is a phenyl group, R 2 is a methyl group or a benzyl group, X is chlorine; (c) 0.1 to 10 parts by weight of a polyhydroxy compound as a cross-linking agent; and (d) 1 to 30 parts by weight of a metal compound selected from a divalent metal hydroxide, a divalent metal oxide or a mixture thereof.
Claim 9
Dependent Claim
106 words
A curable fluoroelastomer composition comprising: (a) 100 parts by weight of a fluoroelastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer, (b) 0.05 to 2.0 parts by weight of a curing accelerator comprising an iminum compound represented by the formula (1) ##STR12## wherein R 1 is a phenyl group, R 2 is a methyl group or a benzyl group, X is chlorine; (c) 0.1 to 10 parts by weight of a polyhydroxy compound as a cross-linking agent; and (d) 1 to 30 parts by weight of a metal compound selected from a divalent metal hydroxide, a divalent metal oxide or a mixture thereof.
Claim 10
Dependent Claim
15 words
A curable fluoroelastomer composition according to claim 7, wherein R 2 is a benzyl group.
Claim 11
Dependent Claim
38 words
A curable fluoroelastomer composition according to claim 7, wherein said iminum compound is bis(benzyldiphenylphosphine)iminum chloride, said polyhydroxy compound is bisphenol AF or hydroquinone, and said metal compound is an oxide or hydroxide of magnesium, zinc, calcium or lead.
Claim 12
Dependent Claim
92 words
A curable fluoroelastomer composition according to claim 7, further comprising a sulfone compound as a curing accelerator, represented by the formula: ##STR13## wherein R 5 and R 6 , are the same or different, and are each a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 carbon atoms, a substituted or unsubstituted cycloalkenyl group having 4 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 20 carbon atoms and a substituted or unsubstituted phenyl group.
Claim 13
Dependent Claim
18 words
A curable fluoroelastomer composition according to claim 9, further comprising 0.05 to 10 parts by weight of dimethylsulfone.
Claim 14
Dependent Claim
15 words
A curable fluoroelastomer composition according to claim 7, wherein R 2 is a methyl group.
Claim 15
Dependent Claim
15 words
A curable fluoroelastomer composition according to claim 1, wherein R 2 is a methyl 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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |