US5266650A
Expired / Lapsed
US
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Curing fluorocarbon elastomers
Assignee: Dyneon LLC
•
Filing: 1992-01-10
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Granted: 1993-11-30
•
Expires: 2012-01-10
Abstract
Abstract PCT No. PCT/US92/00170 Sec. 371 Date Jan. 10, 1992 Sec. 102(e) Date Jan. 10, 1992 PCT Filed Jan. 10, 1992.Fluorocarbon elastomer gum is compounded with fluorinated ether compositions, the resulting compounded gum is shaped and heated to form a cured shaped article such as automotive fuel line hose or O-ring.
Inventors
- 👤 Miguel A. Guerra
- 👤 David A. Stivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08F; C08F8/00; C08F8/18; C08G; C08G65/00; C08G65/002; C08G65/005; C08G65/007; C08J; C08J3/00; C08J3/24; C08L; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
37 words
Composition comprising a fluorocarbon elastomer gum and a fluorinated ether composition comprising a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 2
Dependent Claim
37 words
Composition comprising a fluorocarbon elastomer gum and a fluorinated ether composition comprising a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 3
Dependent Claim
155 words
The composition of claim 1 wherein said fluorinated ether composition comprises the structure represented by Z--Q--R.sub.f --O--(R.sub.fo).sub.n --R.sub.f --Q--Z with an average molecular weight between 250 and 3,000, where Z is a group reactive with said fluorocarbon elastomer, and where there is an average number of said Z groups per fluorinated ether molecule of greater than 1.0 and less than or equal to 2.0, said Z group is selected from the group consisting of primary amino, and allyl (--CH 2 --CH═CH 2 ); Q is a divalent linking group; R f is a non-branched, perfluoroalkylene group of 1 to 20 carbon atoms; R fo is a perfluoroalkyleneoxy group selected from the group consisting of --(CF 2 ) 2 --O--, --(CF 2 ) 3 --O--, --(CF 2 ) 4 --O--, --CF 2 --CF 2 --O--CF 2 --O--, --CF 2 --CF 2 --O--CF 2 --CF 2 --O--CF 2 --O--; n is a number from 0 to 30.
Claim 4
Dependent Claim
84 words
The composition of claim 2 wherein Q is selected from the group consisting of --CO--, --SO 2 --, --O--, --C y H 2y -- where y is 1 to 20, --C 6 H 4 --, --C 6 H 3 Cl--, --OC 2 H 4 --, --CONR-- or --SO 2 NR-- where where R is lower alkyl of 1 to 3 carbon atoms, or combinations thereof, and wherein when Q is said --CO--, --O--, --SO 2 --, --CONR--, or --SO 2 NR--, Z is allyl.
Claim 5
Dependent Claim
165 words
The composition of claim 1 wherein said fluorinated ether composition comprises the structure represented by Z--Q--R.sub.f --O--(R.sub.fo).sub.n --R'.sub.f with an average molecular weight between 250 and 3,000, where Z is a group reactive with said fluorocarbon elastomer, and where there is an average number of said Z groups per fluorinated ether molecule of less than or equal to 1.0, said Z group is selected from the group consisting of primary amino, and allyl (--CH 2 --CH═CH 2 ); Q is a divalent linking group; R' f is a nonbranched, monovalent, perfluoroaliphatic fluorocarbon containing from 1 to 10 carbon atoms; R f is a non-branched, perfluoroalkyl group of 1 to 20 carbon atoms, R fo is a perfluoroalkyleneoxy group selected from the group consisting of --(CF 2 ) 2 --O--, --(CF 2 ) 3 --O--, --(CF 2 ) 4 --O--, --CF 2 --CF 2 --O--CF 2 --CF 2 --O--CF 2 --O--; --CF 2 --CF 2 --O--CF 2 --O--; n is a number from 0 to 30.
Claim 6
Dependent Claim
14 words
The composition of claim 2 where R fo is --CF 2 --CF 2 --O--.
Claim 7
Dependent Claim
14 words
The composition of claim 4 where R fo is --CF 2 CF 2 --O--.
Claim 8
Dependent Claim
35 words
A curable elastomer composition comprising a fluorocarbon elastomer gum and a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 9
Dependent Claim
35 words
A curable elastomer composition comprising a fluorocarbon elastomer gum and a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 10
Dependent Claim
10 words
The composition of claim 7 further comprising a curing system.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein said curing system comprises a peroxide.
Claim 12
Dependent Claim
11 words
The composition of claim 8 wherein said curing system comprises ZnO.
Claim 13
Dependent Claim
12 words
The composition of claim 10 further comprising PbO or dibasic lead phosphite.
Claim 14
Dependent Claim
31 words
The composition of claim I wherein said fluorinated ether composition is present in an amount sufficient to impart, to the cured composition, improved low-temperature flexibility or improved mold-release properties or both.
Claim 15
Dependent Claim
27 words
The composition of claim 1 wherein the amount of said fluorinated ether composition present is 0.5 to 50 weight percent based on the weight of said gum.
Claim 16
Dependent Claim
36 words
A curable elastomer composition comprising a fluorocarbon gum, a functional fluoroaliphatic mono- or polyether of linear and regular structure where said functionality is primary amino or allyl, and reactive with said gum, and a cross-linking agent.
Claim 17
Dependent Claim
36 words
A curable elastomer composition comprising a fluorocarbon gum, a functional fluoroaliphatic mono- or polyether of linear and regular structure where said functionality is primary amino or allyl, and reactive with said gum, and a cross-linking agent.
Claim 18
Dependent Claim
20 words
The composition of claim 2 wherein said fluorinated ether composition is present in an amount sufficient to cross-link said gum.
Claim 19
Dependent Claim
50 words
The composition of claim 1 wherein said gum comprises a polymer whose interpolymerized units comprise units derived from two or more of the following monomers, CF 2 ═CH 2 , CF 2 ═CFCF 3 , CF 2 ═CF 2 , CH 2 ═CHCH 3 , CF 2 ═CFOCF 3 .
Claim 20
Dependent Claim
18 words
The composition of claim 1 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and, optionally, tetrafluoroethylene.
Claim 21
Dependent Claim
17 words
The composition of claim 1 wherein said gum comprises a copolymer of vinylidene fluoride, tetrafluoroethylene, and propylene.
Claim 22
Independent Claim
44 words
A method of preparing an elastomer composition, comprising mixing a fluorocarbon elastomer gum and a fluorinated ether composition comprising a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 23
Independent Claim
44 words
A method of preparing an elastomer composition, comprising mixing a fluorocarbon elastomer gum and a fluorinated ether composition comprising a functional fluoroaliphatic mono- or polyether of linear and regular structure, and where said functionality is primary amino or allyl, and reactive with said gum.
Claim 24
Independent Claim
66 words
A method of forming a cured elastomeric article, comprising 1) shaping a compounded elastomer composition, comprising a fluorocarbon elastomer gum and a functional fluoroaliphatic mono- or polyether of linear and regular structure where said functionality is primary amino or allyl, and reactive with said gum, at an elevated temperature into the form of an article, and 2) heating said formed article to cure said compounded composition.
Claim 25
Independent Claim
66 words
A method of forming a cured elastomeric article, comprising 1) shaping a compounded elastomer composition, comprising a fluorocarbon elastomer gum and a functional fluoroaliphatic mono- or polyether of linear and regular structure where said functionality is primary amino or allyl, and reactive with said gum, at an elevated temperature into the form of an article, and 2) heating said formed article to cure said compounded composition.
Claim 26
Dependent Claim
13 words
A shaped article comprising the composition of claim 1 in its cured state.
References Cited (Backward Citations)
US3318854A
Cited
US3051677A
Cited
US3159609A
Cited
US2968649A
Cited
US3125599A
Cited
US3250807A
Cited
US3392097A
Cited
US3699145A
Cited
US3442942A
Cited
US3467635A
Cited
US3546186A
Cited
US3505411A
Cited
US3715378A
Cited
US3849504A
Cited
US3632788A
Cited
US4094911A
Cited
US3810874A
Cited
US3810875A
Cited
US3876654A
Cited
US3752787A
Cited
US4287320A
Cited
US4035565A
Cited
US4214060A
Cited
JPS5235289A
Cited
US4259463A
Cited
US4233421A
Cited
US4278776A
Cited
US4263414A
Cited
US4450263A
Cited
JPS57109811A
Cited
US4358559A
Cited
US4446270A
Cited
JPS59217749A
Cited
UST107801I4
Cited
US4564662A
Cited
US5026786A
Cited
EP0222201A1
Cited
US4894484A
Cited
US4810760A
Cited
US4894418A
Cited
EP0310966A1
Cited
US4882390A
Cited
WO1990006296A1
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |