US5068137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery laminate and composite hose
Assignee: Yokohama Rubber Co Ltd
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Filing: 1989-11-13
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Granted: 1991-11-26
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Expires: 2009-11-13
Abstract
Abstract Composite laminates are disclosed which are designed to exhibit superior resistance to oil and to heat and which are comprised essentially of two different rubbery layers and a fibrous layer interposed therebetween. One rubber layer is formed from a rubber composition made up of highly hydrogenated acrylonitrile-butadiene rubber, an organic peroxide curing agent and magnesium oxide, and the other from a rubber composition of a rubber other than chlosulfonated polyethylene rubber. The fibrous layer is formed from an organic fiber treated with a dip coating of a specified composition. Also disclosed is a composite hose in which the rubbery layers and fibrous layer are assembled.
Inventors
- 👤 Osamu Ozawa
- 👤 Shuji Takahashi
- 👤 Shigeru Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/10; B29; B29D; B29D23/00; B32B25/04; B32B25/08; B32B25/18; B32B27/00; B32B27/30; B32B27/306; B32B27/34; B32B27/36; B32B9/00; B32B9/02; B32B9/04; B32B9/043; C; C08; C08L; C08L15/00; C08L15/005; C08L23/00; C08L23/26; C08L23/32; C08L23/34; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/086; B32B2262/00; B32B2262/02; B32B2262/0223; B32B2262/0261; B32B2262/0269; B32B2262/0276; B32B2262/06; B32B2262/062; B32B2305/00; B32B2305/08; B32B2317/00; B32B2317/10; B32B2319/00; B32B2329/00; B32B2329/04; B32B2367/00; B32B2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/1366; Y10T428/1386; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T428/31938; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/679
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
184 words
A composite laminate comprising: (a) a first rubbery layer formed from a rubber composition comprising 100 parts by weight of a copolymeric rubber having in the molecular chain an unsaturated nitrile unit in an amount of 10 to 45 percent by weight, a conjugated diene unit in an amount up to 5 percent by weight and either one or both of an ethylenically unsaturated unit other than said unsaturated nitrile unit and a hydrogenated conjugated diene unit in an amount of 50 to 90 percent by weight, 0.2 to 15 parts by weight of an organic peroxide curing agent and 1 to 20 parts by weight of magnesium oxide; and (b) a second rubbery layer formed from a rubber composition comprising a rubber other than chlorosulfonated polyethylene rubber; and (c) a fibrous layer formed from an organic fiber and interposed between said first and second rubbery layers, said fiber having been treated with a dip coating consisting essentially of 100 parts by weight of a vinyl pyridine-styrene-butadiene rubber latex, 0 to 100 parts by weight of a styrene-butadiene rubber latex and a resorcinol-formalin precondensate.
Claim 2
Dependent Claim
184 words
A composite laminate comprising: (a) a first rubbery layer formed from a rubber composition comprising 100 parts by weight of a copolymeric rubber having in the molecular chain an unsaturated nitrile unit in an amount of 10 to 45 percent by weight, a conjugated diene unit in an amount up to 5 percent by weight and either one or both of an ethylenically unsaturated unit other than said unsaturated nitrile unit and a hydrogenated conjugated diene unit in an amount of 50 to 90 percent by weight, 0.2 to 15 parts by weight of an organic peroxide curing agent and 1 to 20 parts by weight of magnesium oxide; and (b) a second rubbery layer formed from a rubber composition comprising a rubber other than chlorosulfonated polyethylene rubber; and (c) a fibrous layer formed from an organic fiber and interposed between said first and second rubbery layers, said fiber having been treated with a dip coating consisting essentially of 100 parts by weight of a vinyl pyridine-styrene-butadiene rubber latex, 0 to 100 parts by weight of a styrene-butadiene rubber latex and a resorcinol-formalin precondensate.
Claim 3
Dependent Claim
106 words
The laminate of claim 1 further including a third rubbery layer and a second fibrous layer, said third rubbery layer being disposed over said second rubbery layer and formed from a chlorosulfonated polyethylene rubber composition, said second fibrous layer formed from an organic fiber and interposed between said second and third rubbery layers, said second fibrous layer having been treated with a dip coating consisting essentially of 100 parts by weight of at least one latex of acrylonitrile-butadiene rubber and a carboxyl-modified rubber thereof and 30 to 70 parts by weight of a precondensate of resorcinol and formalin in a mol ratio of 5:3 to 1:1.
Claim 4
Dependent Claim
47 words
The laminate of claim 2 wherein said rubber composition for use in the second rubbery layer consists essentially of 100 parts by weight of a sulfur-vulcanizable rubber, 0.1 to 15 parts by weight of an organic sulfur-containing compound, a silica, a resorcinol donor and a methylene donor.
Claim 5
Dependent Claim
45 words
The laminate of claim 1 wherein said copolymeric rubber is one hydrogenated member selected from the group consisting of acrylonitrile-butadiene rubber, acrylonitrile-isoprene rubber, acrylonitrile-butadiene-isoprene rubber, acrylonitrile-butadiene-methyl acrylate rubber, acrylonitrile-butadiene-acrylate rubber, acrylonitrile-ethylene-butadiene rubber, acrylonitrile-butyl acrylate-ethoxyethyl acrylate-vinyl chloroacetate rubber, acrylonitrile-butyl acrylate-ethoxyethyl acrylate-vinyl norbornene rubber and blends thereof.
Claim 6
Dependent Claim
25 words
The laminate of claim 1 wherein said peroxide curing agent is selected from the group consisting of dicumyl peroxide, 1,2-bis(t-butylperoxyisopropyl)benzene and n-butyl 4,4-di-t-butylperoxy valerianic acid.
Claim 7
Dependent Claim
23 words
The laminate of claim 1 wherein said organic fiber is selected from the group consisting of nylon, polyester, rayon, cotton, vinylon and aramid.
Claim 8
Dependent Claim
29 words
The laminate of claim 3 wherein said sulfur-vulcanizable rubber is selected from the group consisting of natural rubber, polyisoprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber and ethylene-propylene-diene rubber.
Claim 9
Dependent Claim
33 words
The laminate of claim 3 wherein said sulfur-containing compound is represented by the formula 6-R-2,4-dimercapto-1,3,5-triazine where R is a mercapto, alkoxy, mono- or di-alkylamino, mono- or di-cycloalkylamino, mono- or di-arylamino or N-alkyl-N'-arylamine group.
Claim 10
Dependent Claim
11 words
The laminate of claim 8 wherein said sulfur-containing compound is 2,4,6-trimercapto-1,3,5-triazine.
Claim 11
Dependent Claim
15 words
The laminate of claim 3 wherein said resorcinol donor is resorcinol or a resorcinol-formalin precondensate.
Claim 12
Dependent Claim
11 words
The laminate of claim 3 wherein said methylene donor is hexamethylenetetraamine.
Claim 13
Dependent Claim
164 words
A composite hose comprising: (a) an inner tube formed from a rubber composition comprising 100 parts by weight of a copolymeric rubber having in the molecular chain an unsaturated nitrile unit in an amount of 10 to 45 percent by weight, a conjugated diene unit in an amount up to 5 percent by weight and either one or both of an ethylenically unsaturated nitrile unit and a hydrogenated conjugated diene unit in an amount of 50 to 90 percent by weight, 0.2 to 15 parts by weight of an organic peroxide curing agent and 1 to 20 parts by weight of magnesium oxide; (b) a reinforcing layer formed from an organic fiber and disposed over said inner tube, said fiber having been treated with a dip coating consisting essentially of 100 parts by weight of a vinyl pyrridine-styrene-butadiene rubber latex, 0 to 100 parts by weight of a styrene-butadiene rubber latex and a resorcinol-formalin precondensate; and (c) a cover laminated around said reinforcing layer.
Claim 14
Dependent Claim
164 words
A composite hose comprising: (a) an inner tube formed from a rubber composition comprising 100 parts by weight of a copolymeric rubber having in the molecular chain an unsaturated nitrile unit in an amount of 10 to 45 percent by weight, a conjugated diene unit in an amount up to 5 percent by weight and either one or both of an ethylenically unsaturated nitrile unit and a hydrogenated conjugated diene unit in an amount of 50 to 90 percent by weight, 0.2 to 15 parts by weight of an organic peroxide curing agent and 1 to 20 parts by weight of magnesium oxide; (b) a reinforcing layer formed from an organic fiber and disposed over said inner tube, said fiber having been treated with a dip coating consisting essentially of 100 parts by weight of a vinyl pyrridine-styrene-butadiene rubber latex, 0 to 100 parts by weight of a styrene-butadiene rubber latex and a resorcinol-formalin precondensate; and (c) a cover laminated around said reinforcing layer.
Claim 15
Dependent Claim
16 words
The hose of claim 12 wherein said cover is formed from a chlorosulfonated polyethylene rubber composition.
Claim 16
Dependent Claim
100 words
The hose of claim 13 further including an intermediate rubbery layer and a second reinforcing layer interposed respectively between the first mentioned reinforcing layer and the cover, said intermediate rubbery layer being formed from a rubber composition comprising a rubber other than chlorosulfonated polyethylene rubber, said second reinforcing layer formed from an organic fiber treated with a dip coating consisting essentially 100 parts by weight of at least one latex of acrylonitrile-butadiene rubber and a carboxyl-modified rubber thereof and 30 to 70 parts by weight of a precondensate of resorcinol and formalin in a mol ratio of 5:3 to 1:1.
Claim 17
Dependent Claim
47 words
The hose of claim 14 wherein said rubber composition for use in the intermediate rubbery layer consists essentially of 100 parts by weight of a sulfur-vulcanizable rubber, 0.1 to 15 parts by weight of an organic sulfur-containing compound, a silica, a resorcinol donor and a methylene donor.
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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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |