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Patent US4517335A successfully refreshed from Google Patents.
US4517335A
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Process for vulcanization or cross-linking halogen containing rubbers in the presence of silicon containing isothiuronium compounds
Assignee: Evonik Operations GmbH
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Filing: 1984-06-18
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Granted: 1985-05-14
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Expires: 2004-06-18
Abstract
Abstract The invention is directed to vulcanizable halogen containing rubber mixtures which contain a silicate filler and a silicon containing isothiuronium compound and a process for vulcanizing or cross-linking these mixtures.
Inventors
- 👤 Siegfried Wolff
- 👤 Heinz Grewatta
- 👤 Wolfgang Buder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:49
CPC Classifications
C; C08; C08L; C08L15/00; C08L15/02; C08K; C08K5/00; C08K5/54; C08K5/548; C08K5/5406
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
194 words
A vulcanizable rubber composition comprising at least one halogen containing rubber, a silicate filler, and an isothiuronium compound of the formula ##STR4## in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the halogen containing rubber, and wherein X is chloride, bromide or iodide, m is a number from 1 to 6, R 1 is a C 1 to C 5 alkyl group, a C 5 or C 6 -cycloalkyl group or the phenyl group, R is a C 1 to C 5 alkyl group, a C 5 or C 6 cycloalkyl group, the α-methoxyethyl group, the phenyl group or the benzyl group, n is 0, 1 or 2, R 3 , R 4 , R 5 , R 6 are the same or different and are hydrogen, or C 1 -C 5 alkyl group, or R 3 , R 5 are hydrogen and R 4 , R 6 are the same or different and are hydrogen, a C 5 -C 6 -cycloalkyl group, the phenyl group or the benzyl group, or R 4 and R 6 together are a connected C 2 -C 4 alkylene chain.
Claim 2
Dependent Claim
194 words
A vulcanizable rubber composition comprising at least one halogen containing rubber, a silicate filler, and an isothiuronium compound of the formula ##STR4## in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the halogen containing rubber, and wherein X is chloride, bromide or iodide, m is a number from 1 to 6, R 1 is a C 1 to C 5 alkyl group, a C 5 or C 6 -cycloalkyl group or the phenyl group, R is a C 1 to C 5 alkyl group, a C 5 or C 6 cycloalkyl group, the α-methoxyethyl group, the phenyl group or the benzyl group, n is 0, 1 or 2, R 3 , R 4 , R 5 , R 6 are the same or different and are hydrogen, or C 1 -C 5 alkyl group, or R 3 , R 5 are hydrogen and R 4 , R 6 are the same or different and are hydrogen, a C 5 -C 6 -cycloalkyl group, the phenyl group or the benzyl group, or R 4 and R 6 together are a connected C 2 -C 4 alkylene chain.
Claim 3
Dependent Claim
9 words
A composition according to claim 1 including a halosilane.
Claim 4
Dependent Claim
10 words
A composition according to claim 1 free from a halosilane.
Claim 5
Dependent Claim
25 words
A composition according to claim 1 wherein R 1 is C 1 to C 5 alkyl and R is C 1 to C 5 alkyl.
Claim 6
Dependent Claim
10 words
A composition according to claim 4 where n is 0.
Claim 7
Dependent Claim
12 words
A composition according to claim 5 where m is 2 or 3.
Claim 8
Dependent Claim
39 words
A composition according to claim 6 containing 10 to 250 parts of silicate filler, 0 to 3 parts of halosilane, 0 to 150 parts of carbon black, 0.1 to 15 parts of magnesium oxide, lead oxide or zinc oxide.
Claim 9
Dependent Claim
39 words
A composition according to claim 1 containing 10 to 250 parts of silicate filler, 0 to 3 parts of halosilane, 0 to 150 parts of carbon black, 0.1 to 15 parts of magnesium oxide, lead oxide or zinc oxide.
Claim 10
Dependent Claim
18 words
A composition according to claim 8 wherein the halogen containing rubber is polychlorobutadiene, chlorobutyl rubber or bromobutyl rubber.
Claim 11
Dependent Claim
12 words
A composition according to claim 9 wherein the silicate is precipitated silica.
Claim 12
Dependent Claim
9 words
A composition according to claim 10 containing magnesium oxide.
Claim 13
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 1.
Claim 14
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 4.
Claim 15
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 5.
Claim 16
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 6.
Claim 17
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 8.
Claim 18
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 9.
Claim 19
Dependent Claim
11 words
The vulcanized product obtained by vulcanizing the composition of claim 10.
Claim 20
Dependent Claim
23 words
A process of vulcanizing the composition of claim 1 comprising heating the composition at 100° to 200° C. for 1 to 200 minutes.
Claim 21
Dependent Claim
13 words
A composition according to claim 1 wherein the isothiuronium compound is either ##STR5##
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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |