US4551392A
Expired / Lapsed
US
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Composite materials and composite building elements based on EP(D)M
Assignee: Huels AG
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Filing: 1984-06-11
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Granted: 1985-11-05
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Expires: 2004-06-11
Abstract
Abstract Composite materials and composite building elements have two layers: (1) a layer obtained from a vulcanizable composition based on EP(D)M and (2) a layer obtained from a vulcanizable composition based on an elastomer component consisting of 5-50% by weight of a polyoctenylene elastomer and 50-95% by weight of an elastomer, or several elastomers, selected from the group of SBR, NBR, CM and the diene elastomers. The strength of the interlayer bond attained by vulcanization welding is good to excellent.
Inventors
- 👤 Adolf Draexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:58
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/042; B32B25/14; C; C08; C08L; C08L21/00; B32B2305/00; B32B2305/72; B32B2307/00; B32B2307/70; B32B2307/718; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
A composite material comprising the following two layers: (1) a layer comprising an ethylene/propylene or ethylene/propylene/diene elastomer and an effective amount of a vulcanizing agent; and (2) an adjoining layer comprising an elastomer component comprising 5-50% by weight of a polyoctenylene elastomer having a viscosity number (J value) of 40-350 cc/g, measured at 25° C. in tolune in a concentration of 0.5% (weight/volume of solution), and 5- 95% by weight of one or more elastomers selected from the group of styrene/butadiene rubber, acrylonitrile/butadiene rubber, chlorinated polyethylene and diene elastomers, and an effective amount of a vulcanizing agent.
Claim 2
Dependent Claim
97 words
A composite material comprising the following two layers: (1) a layer comprising an ethylene/propylene or ethylene/propylene/diene elastomer and an effective amount of a vulcanizing agent; and (2) an adjoining layer comprising an elastomer component comprising 5-50% by weight of a polyoctenylene elastomer having a viscosity number (J value) of 40-350 cc/g, measured at 25° C. in tolune in a concentration of 0.5% (weight/volume of solution), and 5- 95% by weight of one or more elastomers selected from the group of styrene/butadiene rubber, acrylonitrile/butadiene rubber, chlorinated polyethylene and diene elastomers, and an effective amount of a vulcanizing agent.
Claim 3
Dependent Claim
10 words
A composite material of claim 1 which has been vulicanized.
Claim 4
Dependent Claim
14 words
A composite material of claim 2 wherein one or both layers contain conventional additives.
Claim 5
Dependent Claim
11 words
A composite material of claim 3 wherein both layers contain additives.
Claim 6
Dependent Claim
54 words
A coposite material of claim 2 wherein the elastomer component in said adjoining layer (2) comprises 10-30% by weight of a polyoctenylene elastomer having a J value of 80-200 cc/g, and 70-90% by weight of one or more elastomers selected form the group of styrene/butadiene rubber acrylonitrile/butadiene rubber, rubber chlorianted polyethylene and diene elastomers.
Claim 7
Dependent Claim
15 words
A composite material of claim 2 wherein the elastmer in layer (1) is ethylene/propylene rubber.
Claim 8
Dependent Claim
15 words
A composite material of claim 2 wherein the elastomer in layer (1) is ethylene/propylene/diene elastomer.
Claim 9
Dependent Claim
19 words
A composite material of claim 7 wherein the diene in said ethylene/propylene/diene elastomer is ethylidene norbornene, 1,4-hexadiene or dicyclopentadiene.
Claim 10
Dependent Claim
22 words
A composite material of claim 2 wherein said diene elastomer is natural rubber, isoprene rubber, butadiene rubber, polychloroprene, or a 1,3-butadiene/isoprene copolymer.
Claim 11
Dependent Claim
14 words
A composite material of claim 2 wherein the polyoctenylene elastomer has predominantly trans-double bonds.
Claim 12
Dependent Claim
14 words
A composite material of claim 2 wherein the polyoctenylene elastomer has predominantly cis-double bonds.
Claim 13
Dependent Claim
15 words
A composite material of claim 2 wherein the vulcanizing agent comprises sulfur and an accelerator.
Claim 14
Dependent Claim
13 words
A composite material of claim 2 wherein the vulcanizing agent comprises a peroxide.
Claim 15
Dependent Claim
31 words
A composite material of claim 4 wherein each layer further comprises a filler, a plasticizer oil, an age retarder, an ozone protection wax, a mold release agent or an adhesion promoter.
Claim 16
Dependent Claim
26 words
In a composite building element comprising a composite material having at least two elastomer layers, the improvement wherein the composite material is that of claim 2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |