Abstract

The effect of ultrasound and kind of petroleum resins on the composition of the dispersion medium (raffinates) recovered from a 6 wt % solution of petroleum wax in decane as a result of precipitate formation was studied. Irrespective of the kind of petroleum resins (benzene-soluble or (alcohol + benzene)-soluble) or of their combined action with ultrasound, the content of n-alkanes in the paraffin fraction of the raffinates decreases and that of isoalkanes increases relative to the initial sample; the major components of the paraffin fraction are n-alkanes up to С₂₉Н₆₀. Benzene-soluble and (alcohol + benzene)-soluble resins of lower molecular mass remain in the raffinate obtained after the precipitate separation from a solution of the petroleum wax in decane. The content of naphthene and aromatic rings in the benzene-soluble and (alcohol + benzene)-soluble resins isolated from the raffinates considerably decreases. The benzene-soluble resins isolated from the raffinates are characterized by higher content of paraffinic carbon and higher total content of heteroatoms compared to the initial resins. The (alcohol + benzene)-soluble resins remaining in the raffinate, on the contrary, have considerably lower content of paraffinic carbon atoms, and the total content of the heteroatoms does not noticeably change relative to the initial resins. The combined treatment does not noticeably affect the structural-group parameters of the resins remaining in the raffinate. Hypothetical structural formulas of benzene-soluble and (benzene + alcohol)-soluble resins were suggested on the basis of the structural-group analysis data.

中文翻译：

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石油树脂的组成在石油蜡的癸烷中的超声波处理溶液中抑制沉淀物的形成

摘要

研究了超声波和石油树脂的种类对从 6 wt% 石油蜡的癸烷溶液中回收的分散介质（萃余液）组成的影响，因为沉淀物的形成。无论石油树脂的种类（苯可溶性或（醇+苯）可溶性）或它们与超声的联合作用如何，相对于提余液的石蜡馏分，正构烷烃的含量会降低，而异烷烃的含量会增加。初始样本；石蜡馏分的主要成分是最高 С ₂₉ Н _60的正构烷烃. 在从石油蜡的癸烷溶液中沉淀分离后获得的萃余液中保留有较低分子量的苯可溶性和（醇+苯）可溶性树脂。从萃余液中分离的苯可溶性和（醇+苯）可溶性树脂中环烷烃和芳环的含量显着降低。与初始树脂相比，从萃余液中分离出的苯可溶性树脂具有更高的链烷烃碳含量和更高的杂原子总含量的特点。相反，残留在萃余液中的（醇+苯）可溶性树脂具有相当低的链烷烃碳原子含量，并且杂原子的总含量相对于初始树脂没有明显变化。联合处理不会显着影响残留在萃余液中的树脂的结构组参数。在结构基团分析数据的基础上，提出了苯可溶性和（苯+醇）可溶性树脂的假设结构式。