Patent US4600651A successfully refreshed from Google Patents.
US4600651A
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US
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Fluoroelastomer laminates
Assignee: EIDP Inc
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Filing: 1984-08-06
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Granted: 1986-07-15
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Expires: 2004-08-06
Abstract
Abstract Laminates prepared by co-curing terpolymers of tetrafluoroethylene, perfluoromethyl perfluorovinylether, and a halogen-containing cure site monomer with a second peroxide-curable elastomer. The laminates can be bonded to a variety of substrates.
Inventors
- 👤 Carl A. Aufdermarsh
- 👤 Robert J. Harder
- 👤 Phillip P. Spiegelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:40
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/14; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B27/30; B32B27/304; B32B27/32; B32B27/322; B32B2305/00; B32B2305/72; Y; Y10; Y10S; Y10S215/00; Y10S215/02; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
A laminate prepared from (a) a first layer of peroxide curable elastomer composition of a terpolymer of tetrafluoroethylene, a perfluoroalkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about 2 mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer, and (b) a second layer of peroxide curable elastomer composition of a polymer selected from the group consisting of (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo cure site monomer; (2) silicone elastomers and (3) copolymers of tetrafluoroethylene and propylene, the laminate being co-cured and the first and second layers being directly bonded to each other.
Claim 2
Dependent Claim
135 words
A laminate prepared from (a) a first layer of peroxide curable elastomer composition of a terpolymer of tetrafluoroethylene, a perfluoroalkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about 2 mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer, and (b) a second layer of peroxide curable elastomer composition of a polymer selected from the group consisting of (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo cure site monomer; (2) silicone elastomers and (3) copolymers of tetrafluoroethylene and propylene, the laminate being co-cured and the first and second layers being directly bonded to each other.
Claim 3
Dependent Claim
30 words
A co-cured laminate of claim 1 wherein the second layer is a copolymer prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo-cure site monomer.
Claim 4
Dependent Claim
14 words
A co-cured laminate of claim 1 wherein the second layer is a silicone elastomer.
Claim 5
Dependent Claim
19 words
A co-cured laminate of claim 1 wherein the unsaturated compound used in the preparation of the terpolymer is 4-bromo-3,3,4,4-tetrafluorobutene-1.
Claim 6
Dependent Claim
21 words
A co-cured laminate of claim 1 wherein the unsaturated compound used in the preparation of the first layer terpolymer is 4-iodo-3,3,4,4-tetrafluorobutene-1.
Claim 7
Dependent Claim
17 words
A co-cured laminate of claim 1 in which the second layer is bonded to a metal substrate.
Claim 8
Dependent Claim
19 words
A co-cured laminate of claim 1 in which the second layer is bonded to a layer of cured elastomer.
Claim 9
Dependent Claim
19 words
A co-cured laminate of claim 7 in which the layer of cured elastomer is bonded to a metal substrate.
Claim 10
Dependent Claim
18 words
A co-cured laminate of claim 8 in which the metal substrate is in the form of a roll.
Claim 11
Dependent Claim
130 words
A laminar structure consisting essentially of (a) a metal substrate (b) a peroxide curable elastomer composition of a polymer selected from the group consisting of (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo-cure site monomer; (2) silicone elastomers; and (3) copolymers of tetrafluoroethylene and propylene (c) a peroxide curable perfluoroelastomer composition of a terpolymer of tetrafluoroethylene, a perfluoro alkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about two mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer, wherein (b) and (c) are co-cured and directly bonded to each other.
Claim 12
Dependent Claim
130 words
A laminar structure consisting essentially of (a) a metal substrate (b) a peroxide curable elastomer composition of a polymer selected from the group consisting of (1) copolymers prepared from monomers consisting essentially of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and a bromo- or iodo-cure site monomer; (2) silicone elastomers; and (3) copolymers of tetrafluoroethylene and propylene (c) a peroxide curable perfluoroelastomer composition of a terpolymer of tetrafluoroethylene, a perfluoro alkyl perfluorovinylether wherein the alkyl group contains 1 to 5 carbon atoms, and up to about two mole percent of units derived from an ethylenically unsaturated compound having a bromo- or iodo-substituent in an amount sufficient to provide at least about 0.1 mole percent bromine or iodine in the resulting terpolymer, wherein (b) and (c) are co-cured and directly bonded to each other.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |