the allergenic effect of rubber accelerators tetramethyl
[The allergenic effect of rubber accelerators tetramethyl
[The allergenic effect of rubber accelerators tetramethyl thiuram disulfide (TMTD) and mercaptobenzothiazole (MBT)]. The results indicate a wider use, a higher percentage of positive epicutaneous tests and also a higher sensitizing potency in the animal test of the TMTD as compared with MBT. MBT was removed from our standard series.
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Allergy to rubber accelerators | DermNet NZ
What are rubber accelerators? Rubber accelerators are chemicals used to speed up the manufacturing process of rubber (vulcanisation). This process makes untreated natural rubber latex suitable for use in the manufacture of many rubber products.
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ULTRA/SECONDARY ACCELERATORS: accelerators and ZDMC ZDBCX
selection of ultra/secondary accelerators in combination with a delayed action accelerator (e.g. sulfenamide) will allow sufficient scorch delay before the onset of vulcanization and high torque after the start of vulcanization. One must select ultra/secondary accelerators that work in a synergistic manner with other ingredients in a compound.
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Human Metabolome Database: Showing metabocard for 2(3H
Showing metabocard for 2(3H)-Benzothiazolethione (HMDB0030524) Jump To Section: Identification Taxonomy Ontology Physical properties Spectra Biological properties Concentrations Links References XML
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T3DB: 2(3H)-Benzothiazolethione
Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons. Involved in cell-cycle regulation. Likely to play an important role in the development and maturation of many tissues.
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Common Vulcanization Accelerators
Common Accelerators for Sulfur Vulcanization. Secondary accelerators have a synergistic effect on cure, that is, they boost cure and increase the cross-link density. They are usually used at much lower concentration. The three most important classes of secondary accelerators are guanidines, thiurams, and dithiocarbamates.
Send InquiryNick Gardner, SHIELD Scientific Accelerator Free Fact or
With the current media interest in Natural Rubber Latex Allergy (also known as Immediate Type Hypersensitivity, Protein Allergy or Type I), it was possibly only a question of time before the focus moved also to Allergic Contact Dermatitis (also known as Type IV, Delayed Hypersensitivity or Chemical Allergy).
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Mechanism for cross-linking polychloroprene with ethylene
rubber contains polychloroprene gumstock, zinc oxide/magnesium oxide, a curing accelerator (typically ETU), stearic acid (as a processing aid) and additives to control properties such as photo-degradation, thermal stability and colour.
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Understanding BLOOM - caosu.org
such as paraffin waxes or sulphur. Limited solubility in a given elastomer and a dosage level above the. solubility limit are the main causes for a substance to develop bloom. Most chemicals are more soluble in hot rubber than cold rubber. Also, they are more soluble in unvulcanized rubber than vulcanized rubber.
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The Effect of the Vulcanizing System on Cure
The Effect of the Vulcanizing System on Curing and Mechanical Properties of NBR/EPDM Blends again. The swollen and de-swollen weights were used to calculate the volume fraction of rubber in the network when swollen to equilibrium, V r, according to the following expression: where: D = de-swollen weight, S = swollen weight, ρr
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[The allergenic effect of rubber accelerators tetramethyl
[The allergenic effect of rubber accelerators tetramethyl thiuram disulfide (TMTD) and mercaptobenzothiazole (MBT)]. The results indicate a wider use, a higher percentage of positive epicutaneous tests and also a higher sensitizing potency in the animal test of the TMTD as compared with MBT. MBT was removed from our standard series.
Send Inquiry
Allergy to rubber accelerators | DermNet NZ
What are rubber accelerators? Rubber accelerators are chemicals used to speed up the manufacturing process of rubber (vulcanisation). This process makes untreated natural rubber latex suitable for use in the manufacture of many rubber products.
Send Inquiry
ULTRA/SECONDARY ACCELERATORS: accelerators and ZDMC ZDBCX
selection of ultra/secondary accelerators in combination with a delayed action accelerator (e.g. sulfenamide) will allow sufficient scorch delay before the onset of vulcanization and high torque after the start of vulcanization. One must select ultra/secondary accelerators that work in a synergistic manner with other ingredients in a compound.
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TETRAMETHYLTHIURAM DISULFIDE (THIRAM)
Accelerator, in the rubber industry, is added with a curing agent to speed the vulcanization. Accelerators contain sulfur and nitrogen like derivatives of benzothiazole and thiocarbanilides. The popular accelerators are sulfenamides (as a delayed-action accelerators), thiazoles, thiuram sulfides, dithocarbamates and guanidines.
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Human Metabolome Database: Showing metabocard for 2(3H
Showing metabocard for 2(3H)-Benzothiazolethione (HMDB0030524) Jump To Section: Identification Taxonomy Ontology Physical properties Spectra Biological properties Concentrations Links References XML
Send Inquiry
T3DB: 2(3H)-Benzothiazolethione
Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons. Involved in cell-cycle regulation. Likely to play an important role in the development and maturation of many tissues.
Send InquiryVulcanization of Nitrile Rubber. Part I. Effect of Some
Compounding mixtures were prepared based on acrylonitrile-butadiene rubber (Krynac 803) to which increasing parts per hundred rubber (pphr) of the following accelerates were added: tetramethyl thiuram disulfur (TMTD in series A 1), tetramethyl thiuram monosulfur (TMTM in series A 2), 2-mercaptobenzothiazole (MBT in series A 3), and 2,2′-dithiobisbenzothiazole (MBTS in series A 4). Effects of the quantity and type of accelerator on the vulcanization characteristics were studied.
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Common Vulcanization Accelerators
Common Accelerators for Sulfur Vulcanization. Secondary accelerators have a synergistic effect on cure, that is, they boost cure and increase the cross-link density. They are usually used at much lower concentration. The three most important classes of secondary accelerators are guanidines, thiurams, and dithiocarbamates.
Send Inquiry