Patent US5187239A successfully refreshed from Google Patents.
US5187239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur vulcanizable rubber compositions containing a methyl trialkyl ammonium salt
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1990-03-22
•
Granted: 1993-02-16
•
Expires: 2010-03-22
Abstract
Abstract A method is disclosed for increasing the rate of vulcanization of a rubber composition comprising adding to a sulfur vulcanizable rubber a methyl trialkyl ammonium salt of the formula: ##STR1## wherein R 1 , R 2 , and R 3 are independently alkyl radicals having 8 to 10 carbon atoms and M is selected from the group consisting of Cl, Br, CH 3 SO 4 and HSO 4 . Addition of a methyl trialkyl ammonium salt of the above formula significantly increases the rate of vulcanization of the rubber.
Inventors
- 👤 Carl R. Parks
- 👤 Richard M. D'Sidocky
- 👤 Martin P. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:10
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0025; C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A sulfur vulcanizable rubber composition comprising an elastomer containing olefinic unsaturation, a vulcanizing agent, an accelerator and from about 0.05 phr to about 5.0 phr of a methyl trialkyl ammonium salt of the formula: ##STR3## wherein R 1 , R 2 , and R 3 are independently alkyl radicals having 8 to 10 carbon atoms and M is selected from the group consisting of Cl, Br, CH 3 SO 4 and HSO 4 .
Claim 2
Dependent Claim
74 words
A sulfur vulcanizable rubber composition comprising an elastomer containing olefinic unsaturation, a vulcanizing agent, an accelerator and from about 0.05 phr to about 5.0 phr of a methyl trialkyl ammonium salt of the formula: ##STR3## wherein R 1 , R 2 , and R 3 are independently alkyl radicals having 8 to 10 carbon atoms and M is selected from the group consisting of Cl, Br, CH 3 SO 4 and HSO 4 .
Claim 3
Dependent Claim
18 words
The sulfur vulcanizable rubber composition of claim 1 wherein M is Cl or CH 3 SO 4 .
Claim 4
Dependent Claim
44 words
The sulfur vulcanizable rubber composition of claim 1 wherein said elastomer is selected from the group consisting of natural rubber, neoprene, polyisoprene, butyl rubber, polybutadiene, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer, isoprene-styrene copolymer, methyl methacrylate- isoprene copolymer, acrylonitrile-isoprene copolymer, acrylonitrile-butadiene copolymer, EPDM or mixtures thereof.
Claim 5
Dependent Claim
30 words
The sulfur vulcanizable rubber composition of claim 1 wherein the sulfur vulcanizing agent is selected from the group consisting of elemental sulfur, amine disulfide, polymeric polysulfide or sulfur olefin adducts.
Claim 6
Dependent Claim
29 words
The sulfur vulcanizable composition of claim 1 wherein the accelerator is selected from the group consisting of amines, disulfides, guanidines, thioureas, thiazoles, thiurams, sulfenamides, dithiocarbamates, xanthates or mixtures thereof.
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) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |