US4654271A
Expired / Lapsed
US
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Metal complexes useful as rubber/metal bonding promoters
Assignee: Flexsys NV SA
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Filing: 1985-04-04
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Granted: 1987-03-31
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Expires: 2005-04-04
Abstract
Abstract Compounds containing an organic thiosulphate anion and cationic nickel or cobalt in association with an amine, are useful in increasing the bond strength between metal, especially brass, and vulcanized rubber. Typical complexes are those where the anion is dodecylthiosulphate or hexamethylenebis(thiosulphate), and the amine is ethylenediamine or N-benzyl-N-t-octylamine.
Inventors
- 👤 Daniel E. Mauer
- 👤 Philippe G. Moniotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:55
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C07; C07F; C07F15/00; C07F15/04; C07F15/045; C07F15/06; C07F15/065; C08K; C08K5/00; C08K5/0091; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31707
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
56 words
A composite comprising a sulphur-vulcanisable rubber composition containing the rubber, sulphur, a vulcanisation accelerator and a rubber/metal adhesion promoter, and a component having a metal surface in contact with the composition, characterised in that the rubber/metal adhesion promoter comprises a complex containing an organic thiosulphate anion and cationic nickel or cobalt in association with an amine.
Claim 2
Dependent Claim
56 words
A composite comprising a sulphur-vulcanisable rubber composition containing the rubber, sulphur, a vulcanisation accelerator and a rubber/metal adhesion promoter, and a component having a metal surface in contact with the composition, characterised in that the rubber/metal adhesion promoter comprises a complex containing an organic thiosulphate anion and cationic nickel or cobalt in association with an amine.
Claim 3
Dependent Claim
55 words
A composite according to claim 1, in which the metal surface is a brass surface, and in the complex, the organic thiosulphate anion has the formula R 2 (S 2 O 3 - ) x where R 2 is an organic radical of valency x and x has a value of 1, 2 or 3.
Claim 4
Dependent Claim
38 words
A composite according to claim 2, in which in the complex, x has the value 1 and R 2 is an alkyl or alkenyl group containing up to 20 carbon atoms or is a benzyl or alkylbenzyl group.
Claim 5
Dependent Claim
23 words
A composite according to claim 3, in which, in the complex, R is an alkyl group containing from 4 to 16 carbon atoms.
Claim 6
Dependent Claim
54 words
A composite according to claim 2 in which, in the complex, x has the value 2 and R 2 is an alkylene group containing 2 or from 5 to 16 carbon atoms, an analogous group containing from 4 to 16 carbon atoms and one or more double or triple bonds, or a xylylene group.
Claim 7
Dependent Claim
42 words
A composite according to claim 5 in which, in the complex, R 2 is an alkylene group containing 2 or from 5 to 16 carbon atoms, an alkenylene group containing from 4 to 16 carbon atoms, or a 1,3- or 1,4-xylylene group.
Claim 8
Dependent Claim
45 words
A composite according to claim 2, in which, in the complex, R 2 is a tri-N-substituted hexahydrotriazine where the substituent on each nitrogen atom is a group having the formula --COC m H 2m -- where m has a value of from 1 to 6.
Claim 9
Dependent Claim
115 words
A composite according to claim 2, in which, in the complex, the amine is (A) an amine having the general formula H 2 N--R--NH 2 where R represents (i) a straight- or branched-chain group C n H 2n , n having a value of from 2 to 8, with the amine groups being separated by a sequence of no more than 3 carbon atoms, (ii) 1-phenylethylene or 1,2-diphenylethylene, or (iii) --CH 2 CH 2 NHCH 2 CH 2 --, (B) 2,2-bipyridyl, (C) an N-benzyl-N-(tert-alkyl)amine where the tert-alkyl group has the formula ##STR2## where R 1 represents H or a straight- or branched-chain alkyl group of from 1 to 8 carbon atoms, or (D) a poly(ethyleneimine).
Claim 10
Dependent Claim
21 words
A composite according to claim 8, in which, in the complex, the amine is 1,2-diaminoethane, 1,3-diaminopropane, 1,2-diamino-2-methylpropane, 1,3-diamino-2,2-dimethylpropane, N-benzyl-N-t-butylamine or N-benzyl-N-t-octylamine.
Claim 11
Dependent Claim
29 words
A composite according to claim 1 in which the diene rubber is natural or synthetic cis-polyisoprene or a blend of rubbers containing at least 25% by weight of cis-polyisoprene.
Claim 12
Dependent Claim
28 words
A composite according to claim 1 in which the amount of adhesion promoter is from 0.5 to 4 parts by weight per 100 parts by weight of rubber.
Claim 13
Dependent Claim
27 words
A composite according to claim 1 in which the amount of sulphur is from 2 to 6 parts by weight per 100 parts by weight of rubber.
Claim 14
Dependent Claim
12 words
A composite according to claim 1 containing a benzothiazole-2-sulphenamide as vulcanisation accelerator.
Claim 15
Dependent Claim
35 words
An article in which a vulcanised rubber component is bonded to a metal surface, the article having been obtained by heating a composite according to claim 1 to a vulcanisation temperature to vulcanise the rubber.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |