US4048362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced elastomeric articles
Assignee: Dunlop Ltd
•
Filing: 1976-04-19
•
Granted: 1977-09-13
•
Expires: 1996-04-19
Abstract
Abstract The invention relates to a method of bonding certain aromatic polyamide to nitrile rubber compositions by applying to an aromatic polyamide a coating of a vinyl chloride polymer, preferably as a latex or plastisol, assembling the coated aromatic polyamide with the rubber composition and vulcanizing the rubber in contact with the coated aromatic polyamide. Preferably both the coating and rubber composition contain aldehyde condensation resin-forming ingredients or a partially condensed aldehyde resin. The reinforced composites produced are useful in hose, belting or tires.
Inventors
- 👤 Peter Lothar Ernst Moring
- 👤 Kenneth William John Raines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:07
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/13; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L61/00; C08L61/04; C08L61/06; C09; C09J; C09J127/00; C09J127/02; C09J127/04; C09J127/06; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/1386; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
59 words
A method of bonding an aromatic polyamide which, if manufactured as a fibre, would be termed an aramid to a nitrile rubber composition comprises applying to the aromatic polyamide a coating of a vinyl chloride polymer, assembling the coated aromatic polyamide with the rubber composition and vulcanising the rubber in contact with the coated surface of said aromatic polyamide.
Claim 2
Independent Claim
59 words
A method of bonding an aromatic polyamide which, if manufactured as a fibre, would be termed an aramid to a nitrile rubber composition comprises applying to the aromatic polyamide a coating of a vinyl chloride polymer, assembling the coated aromatic polyamide with the rubber composition and vulcanising the rubber in contact with the coated surface of said aromatic polyamide.
Claim 3
Dependent Claim
32 words
A method according to claim 1 wherein the vinyl chloride polymer is applied in the form of a latex and the latex-coated aromatic polyamide is dried before assembly with the rubber composition.
Claim 4
Dependent Claim
19 words
A method according to claim 1 wherein the vinyl chloride polymer is applied in the form of a plastisol.
Claim 5
Independent Claim
24 words
A method according to any of the preceding claims wherein the rubber composition includes aldehyde condensation resin-forming ingredients or a partially condensed aldehyde resin.
Claim 6
Dependent Claim
27 words
A method according to claim 4 wherein the amount of resin-forming ingredients is up to 20 parts by weight per 100 parts by weight of nitrile rubber.
Claim 7
Dependent Claim
22 words
A method according to claim 1 wherein the vinyl chloride polymer includes aldehyde condensation resin-forming ingredients or a partially condensed aldehyde resin.
Claim 8
Dependent Claim
32 words
A method according to claim 6 wherein the coating includes resin-forming ingredients in an amount of up to 10 parts by weight per 100 parts by weight of dry vinyl chloride polymer.
Claim 9
Dependent Claim
24 words
A method according to claim 1 wherein the resin-forming ingredients are an aromatic hydroxy compound and a compound which liberates methylene groups on heating.
Claim 10
Dependent Claim
19 words
A method according to claim 8 wherein the aromatic hydroxy compound has two hydroxyl groups meta to each other.
Claim 11
Dependent Claim
22 words
A method according to claim 9 wherein the aromatic hydroxy compound is selected from the groups consisting of resorcinol, phloroglucinol and 1,3-dihydroxynaphthalene.
Claim 12
Dependent Claim
22 words
A method according to claim 8 wherein the compound which liberates methylene groups on heating is hexamethylenetetramine or a polymer of formaldehyde.
Claim 13
Dependent Claim
27 words
A method according to claim 8 wherein the compound which liberates methylene groups on heating is hexamethoxymethyl melamine, lauryloxy-methyl pyridinium chloride, cetyloxymethyl pyridinium chloride, or ethyloxy-pyridinium chloride.
Claim 14
Dependent Claim
13 words
A method according to claim 1 wherein the aromatic polyamide is poly(p-phenylene terephthalamide).
Claim 15
Dependent Claim
13 words
A method according to claim 1 wherein the aromatic polyamide is poly(m-phenylene terephthalamide).
Claim 16
Dependent Claim
14 words
A method according to claim 1 wherein the aromatic polyamide is in fibre form.
Claim 17
Dependent Claim
14 words
A method according to claim 1 wherein the vinyl chloride polymer is poly(vinyl chloride).
Claim 18
Dependent Claim
23 words
A method according to claim 1 wherein the vinyl chloride polymer is a copolymer of vinyl chloride and one or more other monomers.
Claim 19
Dependent Claim
22 words
A method according to claim 17 wherein the copolymer is a copolymer of vinyl chloride and a vinyl ester or an acrylate.
Claim 20
Dependent Claim
21 words
A method according to claim 17 wherein the copolymer has a vinyl chloride unit content of at least 50 weight percent.
Claim 21
Dependent Claim
19 words
A method according to claim 17 wherein the copolymer is a copolymer comprising vinyl chloride and methyl acrylate units.
Claim 22
Dependent Claim
32 words
A composite article comprising a vulcanised nitrile rubber composition bonded to a vinyl chloride polymer coated surface of an aromatic polyamide which, if manufactured as a fiber, would be termed an aramid.
Claim 23
Dependent Claim
32 words
A composite article comprising a vulcanised nitrile rubber composition bonded to a vinyl chloride polymer coated surface of an aromatic polyamide which, if manufactured as a fiber, would be termed an aramid.
Claim 24
Dependent Claim
24 words
An article according to claim 21 wherein the aromatic polyamide is in the form of a fibrous reinforcement for the nitrile rubber composition component.
Claim 25
Dependent Claim
11 words
An article according to claim 21 which is a hose pipe.
References Cited (Backward Citations)
GB628466A
Cited
US2556885A
Cited
US2652353A
Cited
US3030230A
Cited
US3240660A
Cited
US3596696A
Cited
US3549481A
Cited
US3816361A
Cited
US3817778A
Cited
US3950589A
Cited
US3956566A
Cited
US3951887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |