TMTM

MET, mercaptobenzothiazole TMTM, tetramethylthiuram mono sulfide TMTD, tetramethylthiuram disulfide and CBTS, Al-cyclohexyl-2-benzothiazole... 

Although these curative systems may also be used with the polyepichlorohydrin elastomers containing AGE, the polymers were developed to be cured with conventional mbber curatives, sulfur, and peroxides. These polymers containing the pendent aHyl group are readily cured with a typical sulfur cure system such as zinc oxide, and sulfur along with the activators, tetramethylthiuram mono sulfide [97-74-5] (TMTM) and... 

There are no known practical peroxide cure systems for the PO—AGE polymers. Apparentiy the peroxide attacks the polymer backbone at a rate that is unfavorably competitive with the cross-linking rate. A typical sulfur cure system consists of zinc oxide [1314-13-2] tetramethylthiuram mono sulfide (TMTM), 2-2-mercaptobenzothiazole [149-30-4] (MBT), and sulfur. A sulfur donor cure system is zinc oxide, di-o-tolylguanidine [97-39-2] (DOTG) and tetramethylthiuram hexasulftde. 

Although ultra accelerators or sulfur donors can be used together with primary accelerator (such as sulfenamide, TBBS) to improve cure rate as well as the heat resistance [16-18], their use is restricted because of the associated nitrosamine issue [19]. Accelerators derived from secondary amines, for example, MBS, TMTD, TETD, TMTM, and OTOS fall into this category. The combination of sulfenamide, such as CBS or TBBS, and a thiuram, such as TMTD or TETD, shows high-cure rates but suffers from the adverse effects on scorch resistance and vulcanizate dynamic property [20]. Additionally as previously mentioned, the use of TMTD or Tetraethylthiuram disulhde (TETD) or A-oxidiethylene dithiocarbamyl-A -oxidiethylene sulfenamide (OTOS) or 4,4 -Dithiodimorpholine (DTDM) is undesirable [21] due to concerns over carcinogenic nature of the A-nitrosamines formed from the parent amines. The solution to this originated by introduction of nitrosamine safe ultra accelerator such as TBzTD [22,23]. 

Tbiurams tetra-n-aUcyltbiuram mono-, di-, and obgosulfides (TMTD, TMTM, TETD, etc.)... 

VNES8URE REOULATORS PR-1 Suit ptu-cokimn tmtm gnt input PR-2 SM iiM-poM eaitnr gm prMaura... 

Fig. 13. Relationship of nitrile rubber cure systems where DCP is dicumyl peroxide MBTS, benzothiazyl disulfide ZnDMD, zinc dirnethyldithiocarbamate MBT, mercaptobenzothiazole TMTM, tetramethylthiuram mono sulfide TMTD, tetramethylthiuram disulfide and CBTS, iV-cyclobexyl-2-benzothiazole...

A study in Japan looked at the migration of dimethylamine (DMA) into water and hydrochloric acid from 25 rubber articles (including stoppers, chopping boards, spatulas and teats). After one hour of refluxing, the water extracts contained 3 to 1280 mg of DMA per kg of rubber. The study also showed that the thiuram accelerators that were present (TMTD and TMTM) were almost totally decomposed to DMA (a nitrosatable substance). However, in the case of dimethyl dithiocarbamate salts (sodium, zinc, copper and lead examples were included), the decomposition to DMA depended on the solvent used and the salt compound. 

SYNS ACETO TMTM BIS(DIMETHYLTHIO-CARBAMYL) MONOSULFIDE D CARBAMIC ACID, DIMETHYLDITHIO-, ANHYDROSULFIDE MONEX ... 

MONO-THIURAD MONOTHIURAM PENNAC MS TETRAMETHYLTHIURAMMONIUM SULHDE TETRAMETHYLTHIURAMMONOSULHDE TETRAMETHYLTHIURAM SULFIDE TETRAMETHYD TRITHIO CARBAMIC ANHYDRIDE l,l -THIOBIS(N3 -DIMETHYLTHIO)FORMAMIDE THIONEX THIONEX RUBBER ACCELERATOR TMTM TMTMS LTSIADS USAF B-32 USAF EK-P-6255 VULKACIT THIURAM MS/C... 

In the investigation of the mode of action of dialkyl dithiocarbamates, tetramethylthiuram monosulfide (TMTM) revealed a systemic action (Pluijgers and Kerk, 1961 Kaslander, 1966). It is thought that the dimethylthiocarbamoyl part of TMTM is the carrier of the protective effect of the molecule. On this basis, several derivatives with systemic action have been synthesised (Carter et ai, 1963 Banki et al., 1966 Matolcsy and Josepovits, 1967), an example of which is N,N-(dimethylthiocarbamoyl)thioacetic acid (12). 

TMTM. [Akrochem] Tetramethyl thiuram immosulfide accelerator. 

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