US3844970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the vulcanisation of natural and/or synthetic rubbers made from halogen-free dienes
Assignee: Bayer AG
•
Filing: 1972-04-24
•
Granted: 1974-10-29
•
Expires: 1992-04-24
Abstract
Abstract The invention relates to a vulcanisation accelerator combination and their use for a process for vulcanising natural and/or synthetic rubber made from halogen-free dienes. As vulcanisation accelerators triazines substituted in the 2, 4 and 6 positions in combination with at least one thiazole accelerator and optionally at least one thiuram accelerator are used. This accelerator combination obviate the disadvantage of the long cure time when using the triazine accelerator alone without loss of the advantage of the high moduli.
Inventors
- 👤 T Kempermann
- 👤 U Eholzer
- 👤 H Westlinning
- 👤 H Fleischhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
21 words
A VULCANIZATION ACCELERATOR COMPOSITION COMPRISING A. 0.05 TO ABOUT 3 PARTS BY WEIGHT OF AT LEAST ONE 2,4,5TRIAZINE OF THE FORMULA
Claim 2
Dependent Claim
21 words
A VULCANIZATION ACCELERATOR COMPOSITION COMPRISING A. 0.05 TO ABOUT 3 PARTS BY WEIGHT OF AT LEAST ONE 2,4,5TRIAZINE OF THE FORMULA
Claim 3
Dependent Claim
19 words
The composition of claim 1 containing (c) up to 2 parts by weight of at least one thiuram accelerator.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein (b) is dibenzothiazyl disulphide, 2-mercaptobenzothiazole, the zinc salt of 2-mercaptobenzothiazole, N-cyclohexyl-benzothiazole-2-sulphenamide, N-t-butyl-benzothiazole-2-sulphenamide or 4-(benzothiazole-2-sulphenyl)-morpholine.
Claim 5
Dependent Claim
19 words
The composition of claim 2 wherein (c) is tetramethylthiuram disulphide, tetraethylthiuram disulphide, tetramethylthiuram monosulphide or dimethyl diphenyl thiuram disulphide.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein (a) is 2-diethylamino-4,6-bis-(cyclohexyl-sulphenamido)-s-triazine and (b) is dibenzothiazole disulphide.
Claim 7
Dependent Claim
18 words
The composition of claim 2 wherein (a) is 2-diethylamino-4,6-bis-(cyclohexyl-sulphenamido)-s-triazine, (b) is dibenzothiazole disulphide and (c) is tetramethylthiuram disulphide.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein (a) is 2-diethylamino-4,5-bis-(cyclohexyl-sulphenamido)-s-triazine and (b) is N-cyclohexyl-benzothiazole-2-sulphenamide.
Claim 9
Dependent Claim
17 words
The composition of claim 2 wherein (a) is 2-diethylamino-4,5-bis-(cyclohexyl-sulphenamido)-s-triazine, (b) is N-cyclohexyl-benzothiazole-2-sulphenamide and (c) is tetramethylthiuram monosulphide.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |