PETROLEUM IMPREGNATING COMPOSITION (VARIANTS) Russian patent published in 1996 - IPC

FIELD: impregnating materials. SUBSTANCE: petroleum impregnating material of sort "НПМ-I has broad fraction 220-450 C of thermic cracking (thermogas oil) and middle distillate hydrocarbon fraction of catalytic cracking 180-340 C (diluting agent) at the following ratio of components, wt. -%: broad fraction of thermic cracking 220-450 C 80-85; hydrocarbon fraction of catalytic cracking 180-340 C - the rest. Petroleum impregnating material of sort "НПМ-IТ" has broad fraction 220-450 C of thermic cracking and fraction 200-340 C of thermic cracking as diluting agent at the following ratio of components, wt. -%: broad fraction of thermic cracking 220-450 C 80-85, and fraction of thermic cracking 200-340 C - the rest. Petroleum impregnating material of sort "НПМ-2" has broad fraction 220-450 C of thermic cracking, middle-distillate hydrocarbon fraction of catalytic cracking 180-340 C as diluting agent and distillate cracking-residue as depressing addition agent at the following ratio of components, wt.-%: broad fraction of thermic cracking 220-450 C 80-85; hydrocarbon fraction of catalytic cracking 180-340 C 14.5-15, and distillate cracking-residue - the rest. Petroleum impregnating material of sort "НПМ-2Т" has broad fraction 220-450 C of thermic cracking, fraction 200-340 C of thermic cracking as diluting agent and distillate cracking-residue and distillate cracking-residue as depressing addition agent at the following ratio of components, wt.-%: broad fraction of thermic cracking 2220-450 C 80-85; fraction of thermic cracking 200-340 C 14.5-15, and distillate cracking-residue - the rest. Petroleum impregnating material of sort "НПМ-ТМ" has fraction of thermic cracking of lightened composition 190(195)-440 C and distillate cracking-residue as depressing additive agent at the following ratio of components, wt.-%: fraction of thermic cracking of lightened composition 95-99.5, and distillate cracking-residue - the rest. Compositions were used for wood impregnation. EFFECT: improved exploitation properties, broaden raw sources, decreased toxicity, improved ecology. 6 cl, 2 tbl