✦ LIBER ✦

The reactions of 2-(4-morpholinothio)- and 2-(4-morpholinodithio) benzothiazole in the absence of polyisoprene

✍ Scribed by M. H. S. Gradwell; K. G. Hendrikse; W. J. McGill

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 113 KB
Volume: 72
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19990606)72:10<1235::aid-app1>3.0.co;2-o

No coin nor oath required. For personal study only.

✦ Synopsis

2-(4-morpholinothio)benzothiazole (MOR) and 2-(4-morpholinodithio) benzothiazole (MDB) were heated with sulfur and ZnO in a DSC. The products formed at various temperatures were identified and analyzed by HPLC. At temperatures below 200ЊC, decomposition of the accelerator in the absence of other curatives was slow, degradation products being mainly 2-bisbenzothiazole-2,2 -disulfide (MBTS) and 2mercaptobenzothiazole (MBT). A rapid exothermic decomposition above 200ЊC resulted in the formation of MBT (or its amine salt) and 2-(4-morpholino)benzothiazole (MB). MOR and MDB reacted with sulfur to form higher polysulfides. MDB was shown to react more readily with sulfur than MOR and the delayed action of MOR in rubber can therefore not be ascribed to a stable polysulfide as suggested by other authors. Neither MOR nor MDB was found to react with ZnO. A limited reaction between MBT and ZnO was observed.

📜 SIMILAR VOLUMES

Reactions of 2-(4-morpholinothio)- and 2

Reactions of 2-(4-morpholinothio)- and 2-(4-morpholinodithio)benzothiazole in the presence of polyisoprene

✍ M. H. S. Gradwell; K. G. Hendrikse; W. J. McGill 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB 👁 1 views

2-(4-Morpholinothio)benzothiazole (MOR) and 2-(4-morpholinodithio)benzothiazole (MDB) were reacted, in combination with sulfur and ZnO, in the presence of polyisoprene (IR). Samples were heated in a DSC at 2.5ЊC/min and characterized by swelling experiments. The products formed at various temperatur

A differential scanning calorimetric stu

A differential scanning calorimetric study of the interaction of zinc benzothiazole-2-thiolate, sulfur, stearic acid, and zinc stearate in the absence and presence of polyisoprene

✍ Adriaan S. Luyt 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 410 KB 👁 1 views

Synthesis and Some Novel Reactions of 8-

Synthesis and Some Novel Reactions of 8-Chloro-2H-[1,2,4]triazino[3,4-b][1,3]benzothiazole-3,4-dione and 6-Chloro-2-hydrazino-1,3-benzothiazole.

✍ Sharad V. Kuberkar; Vijay N. Bhosale; Sambhaji P. Vartale; Santosh G. Badne 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 19 KB 👁 1 views

ChemInform Abstract: Synthesis, Structur

ChemInform Abstract: Synthesis, Structure, and Properties of Compounds in the NaHSO4—CsHSO4 System. Part 2. The Absence of Superprotonic Transitions in Cs2Na(HSO4)3 and CsNa2(HSO4)3.

✍ Calum R. I. Chisholm; Lisa A. Cowan; Sossina M. Haile 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Study of curative interactions in cis-1,

Study of curative interactions in cis-1,4-polyisoprene. XI. Network maturing reactions in the cis-1,4-polyisoprene–sulfur–zinc dimethyldithiocarbamate and cis-1,4-polyisoprene–sulfur–zinc dimethyldithiocarbamate–ZnO systems

✍ F. W. H. Kruger; W. J. McGill 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 435 KB 👁 1 views

Effect of carboxylic acids on 2-bisbenzo

Effect of carboxylic acids on 2-bisbenzothiazole-2,2′-disulfide- and tetramethylthiuram disulfide-accelerated sulfur vulcanization. II. Vulcanization of polyisoprene in the absence of ZnO

✍ W. J. McGill; S. R. Shelver 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 180 KB 👁 2 views

Polyisoprene was vulcanized by 2-bisbenzothiazole-2,2Ј-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