Rubber: new allergens and preventive measures
Natural rubber latex (NRL) and rubber accelerators are well-known causes of occupational skin diseases. The latest epidemiological data on rubber allergy show that rubber additives are still among the allergens most strongly associated with occupational contact dermatitis, however, a decrease in NRL allergy has been confirmed.
Available in. America, Asia, EMEA, India. Chemical Composition. 1,3-diphenylguanidine (DPG) Appearance / Supply Form. white to light pinkish granules, low dust. Applications. most popular accelerator of the guanidine class, suitable for NR, IR, BR, SBR, NBR and CR and also for polymer latices.
RUBBER TECHNOLOGY: Ingredients, Activators, Fillers
Accelerator Activators. Inorganic compounds mainly metal oxides-zinc oxide, hydrated lime. Organic Acids Normally in combination with metal oxides. Stearic, oleic. Alkaline substances will increase ph of rubber. Usually increases cure rate. Age Resistors (Antidegredants) All rubbers are affected by aging.
A vulcanizable dip-forming rubber latex composition comprising an unsaturated nitrile-conjugated diene copolymer rubber latex, a sulfur-containing vulcanizer, and a vulcanization accelerator comprising at least one compound selected from (i) dithiocarbamic acid compounds of the formula: and (ii) zinc dithiocarbamate compounds of the formula: wherein R 1 and R 2 are
Rubber chemical masterbatch MBTS-75-Konson Chemical
Use Characteristics Konson® MBTS-75 is very popular used for NR, SBR, NBR, CR, and BR, Although it is similar to MBT-80, tendency to cause scorch is weak, and the induction period for curing is longer. It can be used independently or together with basic accelerator in the same way as Konson® MBT-75. It can also be used together with Konson®TMTD-75.
DPTT is an effective primary or secondary accelerator or sulfur donor for use in IIR, CSM, EPDM, NR, IR, SBR and CR. DPTT improves heat resistance and aging properties of vulcanizates. It is particularly suitable for light-colored stocks. MBT Fast, non-staining accelerator for both dry rubber and latex applications.
Glove Manufacturing 1.What is latex compounding?
Typical latex compound formulation is given below for a natural rubber latex compound. NATURAL RUBBER LATEX 100 PARTS BY WEIGHT Potassium hydroxide solution 0.3 0.5 Additional stabilizer (fatty acid soap) 0.05 to 0.2 Sulfur dispersion 0.4 to 1.2 ZDC accelerator dispersion 0.3 to 1.0 Zinc oxide dispersion 0.1 to 1.0
Western Reserve Chemical Corporation is a premier distributor of specialty chemicals and industrial intermediates to compounders and formulators. We provide a broad range of WESTCO brand chemicals including antioxidants, rubber accelerators, tackifiers, retarders, waxes, styrenated phenol and more.
Markets > Rubber > Accelerators and Vulcanization Agents
Accelerators. Vulcanization is the name originally given to the process Charles Goodyear discovered by mixing sulfur with natural rubber and subjecting it to heat to transform a plastic substance into an elastic substance. Years later it was learned that the sulfur actually crosslinks the chains of the rubber molecules.
Improving customer productivity has been the Akrochem goal since we began serving the rubber and plastic industries in 1929. It remains our goal today as we expand into new markets. We provide access to a comprehensive assortment of materials all supported by the best technical expertise and service available.
