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BENZOTHIAZOLYL DISULFIDE

The influence of ZnCFO concentration (3,0 5,0 7,0 phr) on formation of properties complex of the unfilled rubber mixes and their vulcanizates on the basis of isoprene rubber of the following recipe, phr isoprene rubber - 100,0 sulfur - 1,0 di - (2-benzothiazolyl) -disulfide - 0,6 N, N -diphenylguanidine - 3,0 stearic acid - 1,0, was carried out in comparison with the known activator - zinc oxide (5,0 phr). The analysis of Rheometer data of sulfur vulcanization process of elastomeric compositions at 155°C (fig. 5) shows, that on crosslink density and cure rate, about what the constants of speed in the main period (k2) testify, they surpass the control composition with 5,0 phr of zinc oxide. Improvement of the complex of elastic - strong parameters of rubbers with ZnCFO as at normal test conditions, and after thermal air aging (tab. 1), probably, is caused by influence of the new activator on vulcanization network character. So, the percent part of polysulfide bonds (C-Sx-C) and amount of sulfur atoms appropriating to one crosslink (S atoms/crosslink) in vulcanizates with ZnCFO are decreased, the percent part of disulfide bonds (C-S2-C) is increased (fig. 62). [Pg.194]

The best evidence for the photolytic decomposition of mercaptans and disulfides into free radicals involves photoinitiation of polymerization of olefins. Thus, photolysis of disulfides initiates the copolymerization of butadiene and styrene,154 as well as the polymerization of styrene207 and of acrylonitrile.19 Thiophenol and other thiols promote polymerization upon ultraviolet irradiation.19 Furthermore, the exchange of RS-groups between disulfides and thiols is greatly accelerated by light. Representative examples are benzothiazolyl disulfide and 2-mercapto-thiazole,90 tolyl disulfide and p-thiocresol, and benzyl disulfide and benzylmercaptan.91 The reaction probably has a free radical mechanism. Similar exchange reactions have been observed of RS-groups of pairs of disulfides have been observed.19... [Pg.81]

SYNS ALTAX BENZOTHIAZOLYL DISULFIDE 2-BENZOTHIAZOLYL DISULFIDE BIS(BENZOTHIAZ-OLYL)DISULFIDE BIS(2-BENZOTHIAZYL)... [Pg.146]

BENZOTHIAZOLE-2-THIONE see BDFOOO 2(3H)-BENZOTHIAZOLETHIONE see BDFOOO BENZOTHIAZOLYL DISULFIDE see BDE750 2-BENZOTHIAZOLYL DISULFIDE see BDE750 2-BENZOTHIAZOLYL MERCAPTAN see BDFOOO 2-BENZOTHIAZOLYL-N-MORPHOLINOSULFIDEsee BDGOOO... [Pg.1534]

Several disulfides (III) when electrolyzed at Pt electrodes in MeCN containing chlor-oacetic acid and Me4NBr, under controlled current conditions, yield bis(2-benzothiazolyl) disulfide and compound IV (X = Br), which is transformed into V during isolation [50]. An intermediate episulfonium cation is suggested for this reaction. The electrochemical conversion of III was thoroughly examined under different experimental conditions and was reviewed [51]. [Pg.628]

Benzothiazolyl disulfide 2-Benzothiazolyl disulfide. See Benzothiazyl disulfide... [Pg.456]

Benzothiazyl-2-diisopropyl sulfenamide. See Diisopropyl benzothiazole sulfenamide Benzothiazyl disulfide CAS 120-78-5 EINECS/ELINCS 204-424-9 Synonyms Benzothiazole disulfide Benzothiazolyl disulfide 2-Benzothiazolyl disulfide Bis(benzothiazolyl) disulfide Di-2-benzothiazolyldisulfide Dibenzothiazyl disulfide 2,2 -Dibenzothiazyl disulfide 2,2 -Dithiobisbenzothiazole MBTS 2-Mercaptobenzothiazole disulfide 2-Mercaptobenzothiazyldisulfide Mercaptobenzthiazyl ether Empirical C14H8N2S4 Formula (C6H4SCN)2S2... [Pg.456]

Synonyms 2-Benzothiazolyl morpholinodisulfide MBSS Morpholino-2-benzothiazolyl disulfide 2-(Morpholinodithio) benzothiazole 4-Morpholinyl-2-benzothiazole disulfide... [Pg.457]

N-Morpholinyl-2-benzothiazolyl disulfide 4-Morpholinyl-2-benzothiazyl disulfide 2-(4-Morpholinyldithio) benzothiazole... [Pg.457]

Torii S, Tanaka H, Ukida M (1978) Electrosynthesis of hetero-hetero atom bonds 2. An efficient preparation of (2-benzothiazolyl)- and thiocarbamoyl-sulfenamides by electrolytic cross-coupling reaction of 2-mercaptobenzothiazole, bis(2-benzothiazolyl) disulfide, and/or bis(dialkylthiocarbamoyl) disulfides with various amines. J Org Chem 43 3223-3227... [Pg.807]

Startg. disulfide dissolved in aq. NaHCOg bis(azetidin-2-on-4-yl) disulfide deriv. and bis-(2-benzothiazolyl) disulfide. Y almost 100%. T. Kamiya et al., Tetrah. Let. 1973, 3001. [Pg.442]

With EPDM/PP, the rubber is EPDM and the thermoplastic resin is polypropylene. Even though early patents show the vulcanizing agent to be sulfur with an accelerator such as 2-bis(benzothiazolyl)disulfide (MBTS) or tetramethyl thiuram disulfide (TMTD), these sulfur-based curatives are not used today for TPVs. Likely a methylol-terminated phenol-formaldehyde resin curative with a tin chloride activator is used. For a lighter color, sometimes a peroxide crosslinker is used instead. Also, paraffinic... [Pg.163]

See other pages where BENZOTHIAZOLYL DISULFIDE is mentioned: [Pg.598]    [Pg.557]    [Pg.417]    [Pg.220]    [Pg.110]    [Pg.110]    [Pg.598]    [Pg.432]    [Pg.178]    [Pg.306]    [Pg.138]    [Pg.421]    [Pg.424]    [Pg.1060]    [Pg.500]    [Pg.2743]    [Pg.331]    [Pg.231]    [Pg.1793]    [Pg.497]    [Pg.1207]    [Pg.571]    [Pg.31]    [Pg.213]   


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