Molecular formula : C13H13N3
MW : 211.27
CAS No. :102-06-7
nature : white crystals. The temperature of 150 ° C and relative density of 1.13. Soluble alcohol, chloroform, benzene and thermal hot toluene and water-soluble. Was strongly alkaline aqueous solution. Bitterpungent.
Preparation : My diphenyl guanidine production process are condensation of aniline and carbon disulfide prepared diphenylthiourea then diphenylthiourea, lead oxide, ammonium hydroxide and ammonium sulfate at 40-70 ° C under the conditions made diphenyl guanidine sulfate, extraction, filtration, and the half finished. Then drying, screening is finished in D accelerator. The production technology point of difference mainly concentrated in diphenylthiourea Synthesis diphenyl guanidine this step, the early use of lead oxide domestic law, as poor product quality, operators of dust pollution (lead dust), Liquid waste disposal, and low yield, this method in the 20th century, the late 1990s and basic have to stop using. This Act, lead oxide for desulfurizer using amine for ammonia agent, using ammonium sulfate as diphenyl guanidine extraction agent, the raw material consumption, environmental protection there is a problem. Switch zinc oxide could improve the existing production process. Mid-1990s, the domestic law of zinc oxide and iron oxide law, but for various reasons did not popular, have been eliminated. Now all domestic diphenyl guanidine production enterprises have adopted oxygen production, diphenylthiourea with oxygen, ammonia reaction 8h after that diphenyl guanidine. The consumption of raw materials fixed : diphenylthiourea 1250kg / t, homogeneous oxygen, copper acetate (catalyst) YesDVD / t, ammonia 1000 / t, water 252kg / t.
purposes : mainly used for natural rubber syntheic the medium-speed accelerator. Used in thiazoles, Autumn Lamb, and the second category of iodine acid catalyst for the active agent, and agent for DM, TMTD used, can be used for continuous vulcanization. With thiazole type of promotion for the second accelerator, the vulcanizate old resistance performance has declined, with appropriate antioxidant. The neoprene, the goods are plasticizers and the plastic solution for the role. The goods unfit white or light-colored food products and contact with the rubber. Mainly used in the manufacture of tires, plastic sheet, soles and industrial products, rigid and thick plastic products. As for the second dosage of 1-2 copies for thiazole catalyst for the promotion of the second general agents in the amount of 0.1-0.5. The diphenyl guanidine derivatives chromium diphenyl guanidine casein is a highly effective anti-rust agent. Also diphenyl guanidine for plastic crosslinker, photochromic material, ore floating selected additives, paint additives, polishing material additives, metal analysis, construction materials and reagents used additives.
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