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Sulfur vulcanization of polyisoprene accelerated by benzothiazole derivatives. II. Reaction of 2-mercaptobenzothiazole and its zinc salt with sulfur and ZnO in polyisoprene

โœ Scribed by M. H. S. Gradwell; W. J. Mcgill


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
665 KB
Volume
58
Category
Article
ISSN
0021-8995

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Sulfur vulcanization of polyisoprene acc
โœ M. H. S. Gradwell; W. J. Mcgill ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 555 KB

Polyisoprene compounds with sulfur and with sulfur and 2-mercaptobenzothiazole (MBT) were vulcanized by heating in a differential scanning calorimeter (DSC) a t a programmed rate. The reaction was stopped a t various temperatures along the thermogram and the product analyzed by determining the cross

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The sulfur vulcanization of polyisoprene accelerated by 2-bisbenzothiazole-2,2'-disulfide (MBTS) was investigated. Rubber compounds were heated in a DSC and removed at various temperatures along the DSC thermal curve. The rubber vulcanizate was analyzed for crosslink density and for residual reactan

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Polyisoprene was vulcanized with N-cyclohexylbenzothiazole sulfenamide (CBS), sulfur, and zinc oxide by heating in a Differential Scanning Calorimeter (DSC) at a programmed rate to given temperatures. The reaction was quenched and the product analyzed. Soluble curatives and reaction intermediates we

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Polyisoprene was vulcanized with binary accelerator systems comprising mixtures of the zinc salts of tetramethylthiuram disulfide (TMTD) and 2-mercaptobenzothiale (MBT). Samples were heated in a DSC at a programmed rate, the reaction was stopped at points along the thermal curve, and the system was

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Polyisoprene was vulcanized with the binary accelerator system tetramethylthiuram disulfide-2-mercaptobenzothiazole (TMTD-MBT) in the absence of ZnO. Samples were heated in a DSC at a programmed rate, the reaction was stopped a t points along the thermal curve, and the system was analyzed. Extractab

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Polyisoprene was vulcanized by 2-bisbenzothiazole-2,2ะˆ-disulfide (MBTS)/ sulfur and tetramethylthiuram disulfide (TMTD)/sulfur in the absence and presence of benzoic and stearic acids. It was found that the crosslink density of MBTS vulcanizates is halved by the addition of carboxylic acids and this