4-Ethoxymethylene-2-phenyl-2-oxazolin-5-one (oxazolone), 2,4-dinitrochlorobenzene, acetaminophen, 3-aminophenol, cinnamic aldehyde, isoeugenol, citral, tetramethylthiuram disulfide, 2-methoxy-4-methylphenol, resorcinol, eugenol, geraniol, cinnamic alcohol, benzalkonium chloride, vanillin, lactic acid, A,A-diethyl-3-methylbenzamide and 4-aminoacetanilide were obtained from Sigma Aldrich (Taufkirchen, Germany), whereas N,N'-bis(4-aminophenyl)-2,5-diamino-1,4-quinone-diimine (Bandrowski's base) was purchased from ICN Biomedicals (Aurora, OH, USA).
Only the moderate sensitizer tetramethylthiuram disulfide would be misclassified into subcategory 1A using CD86.
Accelerated tetramethylthiuram disulfide
(TMTD) degradation in soil by inoculation with TMTD-utilizing bacteria.
(TMTD) and zinc oxide are also used as a preservative due to their greater effectiveness as a bactericide.
Benzyl Tuex thiuram accelerator is offered as an alternative to other thiuram-based accelerators such as tetramethylthiuram monosulfide, tetramethylthiuram disulfide
and tetraethylthiuram disulfide.
The main accelerators used were N-cyclohexyl-2-benzothiazylsulfenamide (CBTS), tetramethylthiuram disulfide (TMTD), zinc dimethyldithiocarbamate (ZDMDC) and dibenzothiazyl disulfide (MBTS).
Table 2 - chemical abbreviations and sources IPPD N-isopropyl-N'-phenyl-p-phenylenediamine TMQ Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline CBTS N-cyclohexyl-2-benzothiazylsulfenamides TMTD Tetramethylthiuram disulfide ZDMDC Zinc dimethyldithiocarbamate MBTS Dibenzothiazyl disulfide PVI N-(cyctohexylthio)phthalimide DOTG Di-o-tolylguanidine DCP Dicumyl peroxide 40% active IPPD Flexzone 3C TMQ Flectol H CBTS Santocure pellets TMTD Perkacit TMTD ZDMDC Methyl zimate MBTS Perkacit MBTS PVI Santogard PVI DOTG Akrochem DOTG DCP Dicup 40C Table 3 Natural rubber CV60 100.
The chemistry of vulcanization, of olefinic rubbers by means of tetramethylthiuram disulfide
zinc oxide and related systems," Ph.
CBS N-cyclohexyl-2-benzothiazole sulfenamid DTDM 4,4-dithiodimorpholine MBDS 2-(morpholinothio)benzothiazole disulfide MBS 2-(morpholinothio)benzothiazole MBT 2-mercaptobenzothiazole NR Natural rubber OTOS N-oxydiethylenethiocarbamul-N'-oxydiethylene sulfenamide SRB Styrene butadiene rubber TBBS N-t-butyl-2-benzothiazole-2-sulfenamide TBTD Tetrabutylthiuram disulfide TBZTD Tetrabenzylthiuram disulfide TMTD Tetramethylthiuram disulfide
TMTM Tetramethylthiuram monosulfide
Sulfur containing chemicals such as dimorpholinyl disulfide (DTDM) and tetramethylthiuram disulfide
(TMTD) are not only effective accelerators, but they can also be used as "sulfur donors.
Zinc oxide, stearic acid, tetramethylthiuram disulfide
(TMTD), 4,4'-dithiodimorpholine (DTDM), and tetrabutylthiuram disulfide (TBTD) were used.
The first stock containing 2-(morpholinothio) benzothiazole (MTBT) sulfenamide accelerator gave high scorch time and 'excellent adhesion while the second stock containing the disulfide type MBTS and tetramethylthiuram disulfide
ultra accelerator was scorchy and showed poor adhesion with clean separation between cord and robber.