METHOD TO PRODUCE SULFURIC BINDING AGENTS AND SULFURIC BINDING AGENT Russian patent published in 2003 - IPC

FIELD: production of sulfuric binding agents. SUBSTANCE: the invention presents a method to produce sulfuric binding agents and sulfuric binding agent , which are used mainly in the capacity of a component of sulfuric concretes. The method provides for production of the sulfuric binding agent by melting-down of sulfur in medium of the carbon dioxide, Produced melt is heated up to the temperature of not above 135^oC The melt is in succession added with styrene and olefinic hydrocarbons by the way dimers and trimers of the cycling compounds at a ratio of sulfur and the indicated hydrocarbons in a mixture with styrene accordingly (in weight. % ) of 93-98 % and 2 - 7 %, the mixture is heated up to the indicated temperature, keep the received eutectic mixture at this temperature at continuous homogenization by intermixing within no less than 2.5 hours for physico-chemical modification of sulfur. In the indicated method after physico-chemical modification of sulfur crystallization is executed at the cooling rate of the melt of no higher than 16^oC/min up to the ambient temperature. In the indicated method an eutectic mixture is kept congruently without disintegration in the smelting process and is crystallized before obtaining anisotropic crystals of α-rhomboid form, not exposed to polymorphic changes, and at that the contents of an impurity of β-monocline sulphurs do not exceed 0.1 % of weights. Sulfuric binding agent, including sulphur and a mixture of olefinic hydrocarbons, is an eutectic mixture formed by the substituting solid solution of sulfur in quantity of 93-98 % of weight and dissolved in the mixture olefinic hydrocarbons, in which the total contents of olefinic hydrocarbons does not exceed 7 % of weight. EFFECT: produced sulfuric binding agent has uniform and anisotropic properties, high stability to aggressive chemical reagents and temperatures, big strength to mechanic and thermal impacts. 4 cl, 4 dwg, 4 ex, 1 tbl