Cure system for sulfur vulcanizable rubber
US4861842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/19
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a cure system for a sulfur vulcanizable rubber. The cure system comprises: PA1 (a) from about 0.50 to about 2.0 phr of a sulfenamide accelerator selected from the group consisting of N-oxydiethylene benzothiazole-2 sulfenamide, N-cyclohexyl-2-benzothiazole sulfenamide, N-t-butyl-2-benzothiazole sulfenamide and N-oxydiethylene-thiocarbamyl-N'-oxydiethylene sulfenamide; PA1 (b) from about 0.10 to about 1.0 phr of a guanidine accelerator selected from the group consisting of diphenyl guanidine and di-ortho-tolylguanidine; PA1 (c) from about 0.10 to about 1.0 phr of a thiuram accelerator selected from the group consisting of tetraethyl thiuramdisulfide, tetramethyl thiuram monosulfide, tetramethyl thiuramdisulfide; PA1 (d) from about 0.05 to about 1.0 phr of mercapto benzothiazyl disulfide; PA1 (e) from about 0.75 to about 3.0 phr of a sulfur vulcanizing agent; PA1 (f) from about 0.05 to about 0.50 phr of N-cyclohexylthio-phthalimide; PA1 (g) from about 1.0 to about 5.0 phr of a zinc compound selected from the group consisting of zinc oxide and zinc stearate and; PA1 (h) from about 0.05 to about 1.0 phr of an activator of the formula: ##STR1## wherein R…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.