Patent EP0109955A2 successfully refreshed from Google Patents.
EP0109955A2
Expired / Lapsed
EP
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Rubber/metal composites
Assignee: Bayer Agriculture BVBA
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Filing: 1983-10-18
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Granted: —
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Expires: 2003-10-18
Abstract
Abstract The bond strength between a sulphur-vulcanisable rubber and a metal, especially brass, is increased by using as bonding promoter an organic substance containing one or more groups of the formula -S-S0 2 R where R represents (a) a radical -OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent ion derived by the addition of a proton to a nitrogenous base or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogenous base, or (b) an organic radical. Preferred promoters include sodium, zinc, nickel and cobalt organothiosulphates.
Inventors
- 👤 Jean-Marc Delseth
- 👤 Daniel Emile Mauer
- 👤 Philippe Gérard Moniotte
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:24
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K5/00; C08K5/36; C08K5/41; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31707; Y10T428/31725; Y10T428/31765
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
197 words
A composite comprising a sulphur-vulcanisable rubber composition containing sulphur, a vulcanisation accelerator and a rubber/metal adhesion promoter and a component having a metal surface in contact with the said composition, characterised in that the adhesion promoter is an organic substance containing one or more groups of the formula -S-S0 2 R where R represents (a) a radical OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent ion derived by the addition of a proton to a nitrogenous base, or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogenous base, or (b) an organic radical selected from aliphatic, cycloaliphatic, aromatic and heterocyclic radicals, and radicals which are combinations of any two or more such radicals. 2. A composite according to Claim 1 wherein the metal surface is brass and the adhesion promoter is a compound having the formula R 1 (S-SO 3 M) n where R 1 represents an organic radical and n has a value of from 1 to 4, or a polymer in which the groups -S-S0 3 M occur as the terminal portions of groups pendant from the polymer chain.
Claim 2
Dependent Claim
46 words
A composite according to Claim 2 wherein, in a compound, each group -S-S0 3 M is attached to a primary carbon atom of the radical R 1 , and in a polymer the groups -S-S0 3 M occur in the form -CH 2 -S-S0 3 M
Claim 3
Dependent Claim
73 words
A composite according to Claim 2 wherein the adhesion promoter is a compound having the formula R 1 -S-SO 3 M or a hydrate thereof, where R 1 represents an alkyl group, an alkenyl group, a cycloaliphatic group, an aromatic group, a heterocyclic group, a radical which is a combination of two or more such groups, or any such group or radical having as substituent(s) halogen, nitro, hydroxy, alkoxy, carboxy, carboxyalkoxy, or alkylcarbonyl.
Claim 4
Dependent Claim
75 words
A composite according to Claim 4 wherein R 1 represents a C 3-20 alkyl group, a C 2-20 chloroalkyl group, a C 3-20 alkenyl group, a phenyl (C 1-16 alkyl) group, a C 2-20 alkoxyalkyl group, a C 3-20 alkylcarbonyl-oxyalkyl group or a 2,5-dihydroxyphenyl group, or R represents a group having the formula R 7 OOCR 8 - where R 7 represents a C 1-8 alkyl group and R 8 represents a C1-12 alkylene group.
Claim 5
Dependent Claim
17 words
A composite according to Claim 5 wherein M represents sodium or an equivalent of nickel or cobalt.
Claim 6
Dependent Claim
90 words
A composite according to Claim 2 wherein the adhesion promoter is a compound having the formula MO 3 S-S-X'-S-SO 3 M or a hydrate thereof, where X' represents an alkylene radical or a radical comprising two or more alkylene units, pairs of such units being linked through an oxygen or sulphur atom,_through a group -S0 2 -, -NH-, -NH 2 + -, -N(C 1-6 alkyl)-, -NH + (C 1-6 alkyl)-, -CO-, -C00-, -CONR 6- where R 6 is hydrogen or C 1-6 alkyl, or through an arylene or cycloalkylene radical.
Claim 7
Dependent Claim
121 words
A composite according to Claim 7 wherein X' represents a C 2 or a C 5-16 alkylene radical, a C 2-16 alkenylene radical, or a radical having the formula or wherein each a independently represents an integer of from 2 to 8, a' represents an integer from 1 to 6, b represents an integer of from 1 to 4, c represents an integer of from 1 to 12, Y represents a group -(CH 2 ) c - or -(CH 2 CH 2 O) d CH 2 CH 2 - where d represents an integer of from 1 to 5, m represents an integer of from 1 to 6, C 6 H 4 is phenylene and C 10 H 6 is naphthylene.
Claim 8
Dependent Claim
24 words
A composite according to Claim 8 in which M represents an alkali metal or an equivalent of magnesium, calcium, barium, zinc, cobalt or nickel.
Claim 9
Dependent Claim
37 words
A composite according to Claim 9 in which X' represents a C 5-16 alkylene radical and M represents sodium or an equivalent of magnesium, barium, zinc, nickel or cobalt, and the compound also contains water of crystallisation.
Claim 10
Dependent Claim
11 words
A composite according to Claim 10 in which X' represents hexamethylene.
Claim 11
Dependent Claim
56 words
A composite according to Claim 9 in which X' represents a radical or where a represents an integer from 3 to 8, c represents an integer from 3 to 12, C 6 H 4 represents meta- or para-phenylene, and C 10 H 6 represents 1,4- or 1,5-naphthylene and M represents sodium or an equivalent of nickel.
Claim 12
Dependent Claim
17 words
A composite according to Claim 10 in which the adhesion promoter is or or a hydrate thereof.
Claim 13
Dependent Claim
43 words
A composite according to Claim 2 wherein the adhesion promoter is a tri-N-substituted s-hexahydrotriazine where the substituent on each nitrogen atom is a group having the formula -COCmH2m S-S03M, or a hydrate thereof, where m has a value of from 1 to 6.
Claim 14
Dependent Claim
21 words
A composite according to Claim 14 wherein m has the value 2 and M represents sodium or an equivalent of nickel.
Claim 15
Dependent Claim
26 words
A composite according to any of Claims 9 to 15 in which the adhesion promoter is a sodium salt, and which also contains a nickel compound.
Claim 16
Dependent Claim
24 words
A composite according to Claim 16 in which the nickel compound is a nickel compound as defined in any of Claims 9 to 15.
Claim 17
Dependent Claim
29 words
A composite according to Claim 17 in which the adhesion promoter is a mixture of hexamethylenebis(thiosulphate)sodium salt or a hydrate thereof, and hexamethylenebis(thiosulphate) nickel salt or a hydrate thereof.
Claim 18
Dependent Claim
18 words
A composite according to Claim 16 in which the nickel compound is a nickel carboxylate or nickel chloride.
Claim 19
Dependent Claim
33 words
A composite according to any of Claims 1 to 19 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 20
Dependent Claim
32 words
A composite according to any of Claims 1 to 20 in which the amount of adhesion promoter is from 0.5 to 4 parts by weight per 100 parts by weight of rubber.
Claim 21
Dependent Claim
31 words
A composite according to any of Claims 1 to 21 in which the amount of sulphur is from 2 to 6 parts by weight per 100 parts by weight of rubber.
Claim 22
Dependent Claim
16 words
A composite according to any of Claims 1 to 22 containing a benzothiazole-2-sulphenamide as vulcanisation accelerator.
Claim 23
Dependent Claim
33 words
A composite according to Claim 23 in which the benzothiazole-2-sulphenamide is N,N-dicyclohexyl-benzothiazole-2-sulphenamide or 2(morpholinothio)benzothiazole present in an amount of from 0.4 to 1.0 part by weight per 100 parts by weight of rubber.
Claim 24
Dependent Claim
32 words
An article in which vulcanised rubber is bonded to a metal, the article having been obtained by heating a composite according to any of Claims 1 to 24 to vulcanise the rubber.
Claim 25
Dependent Claim
18 words
An article according to Claim 25 that is a tyre, the metal being brass coated on steel cords.
Claim 26
Dependent Claim
42 words
A composite according to Claim 1 in which the adhesion promoter is a compound having the formula RI(S-S03M)n where R 1 , n and M are defined in Claim 1, the composite contains a cobalt compound, and the metal surface is zinc.
Claim 27
Dependent Claim
24 words
A conveyor belt that has been produced by vulcanising a composite according to Claim 27, the zinc being a zinc coating on steel cords.
Claim 28
Dependent Claim
31 words
A compound having the formula (R 1 S 2 O 3 ) 2 M 1 or a hydrate thereof where R represents an organic radical and M represents cobalt or nickel.
Claim 29
Dependent Claim
31 words
A compound having the formula (R 1 S 2 O 3 ) 2 M 1 or a hydrate thereof where R represents an organic radical and M represents cobalt or nickel.
Claim 30
Dependent Claim
67 words
A compound according to Claim 29 where R represents a C 3-20 alkyl group, a C 2-20 chloroalkyl group, a C 3-20 alkenyl group, a phenyl (C 1-16 alkyl) group, a 2,5-dihydroxyphenyl group or a grouping of the formula R 7 OOCR 8 - where R 7 is a C 1-12 alkyl group and R 8 is a C 1-12 alkylene group, and M 1 represents nickel.
Claim 31
Dependent Claim
59 words
A compound according to Claim 30 where R represents a C 4-18 alkyl group, a C 3-12 chloroalkyl group, a C 3-12 alkenyl group, a phenyl (C 1-6 alkyl) group or a grouping of the formula R 7 OOCR 8 - where R 7 is a C 1-8 alkyl group and R 8 is a C 1-8 alkylene group.
Claim 32
Dependent Claim
43 words
A compound according to Claim 31 where R represents a C 4-12 alkyl group, a benzyl or 2-phenylethyl group or a grouping of the formula R 7 OOCR 8 - where R 7 represents methyl or ethyl and R represents ethylene or ethylidene.
Claim 33
Dependent Claim
36 words
A compound having the formula R 7 OOCR 8 S 2 O 3 Na or a hydrate thereof, where R 7 is a C 1-8 alkyl group and R 8 is a C 1-8 alkylene group.
Claim 34
Dependent Claim
36 words
A compound having the formula R 7 OOCR 8 S 2 O 3 Na or a hydrate thereof, where R 7 is a C 1-8 alkyl group and R 8 is a C 1-8 alkylene group.
Claim 35
Dependent Claim
20 words
A compound according to Claim 33 where R 7 represents methyl or ethyl and R 8 represents ethylene or ethylidene.
References Cited (Backward Citations)
No citation records indexed.
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