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Plasticizer and method for making same

A technology of plasticizer and solvent, applied in the field of preparation of oil plasticizer

Active Publication Date: 2007-12-26
ORGKHIM BIOCHEM HLDG MANAGEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The disadvantage of this plasticizer is that it contains a large amount of ecologically harmful PCA

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Feedstock: The residual extract from the selective purification of deasphalting with phenol contained 7.5% polycyclic aromatic hydrocarbons (PCAs) according to IP-346 method.

[0035]The raw material is first diluted with Nefras C2-80 / 120 (composite paraffin-cycloalkane solvent) with a weight ratio of 0.5 to 1 of Nefras to the raw material, and is supplied to the bottom of the extraction column through a heat exchanger with a metering pump. Dimethyl sulfoxide (DMSO) was introduced into the top of the extraction column by a metering pump at a weight ratio of DMSO / feedstock of 3.2 / 1. The temperature at the top of the column was 55°C and the temperature at the bottom was 30°C.

[0036] A raffinate solution comprising raffinate, Nefras and DMSO flowed by gravity from the top of the column. An extract solution comprising DMSO, PCA / resin extract and Nefras was withdrawn by gravity from the bottom of the column through an interface controller.

[0037] The solvent is distill...

Embodiment 2

[0041] Raw materials: a mixture of residual extracts obtained after selective purification of deasphalting with phenol and distillate extracts obtained after selective purification of petroleum fractions with phenol, at a boiling temperature between 300 and 370 ° C, residual extraction The weight ratio of extract to distillate extract is 72 / 28. According to the IP-346 method, the mixture includes 8.7% polycyclic aromatic hydrocarbons (PCAs).

[0042] The raw materials are pre-mixed with Nefras at a weight ratio of Nefras to raw materials of 0.3-1. Then, the mixture was treated with DMSO according to Example 1, with the difference that the weight ratio of DMSO / raw material was 4.5 / 1, the temperature at the top of the column was 60°C, and the temperature at the bottom of the column was 35°C.

[0043] After distillation of the solvent, the resulting raffinate is used as a plasticizer, including extracts of PCA and resins with three or more rings as by-products.

[0044] The pro...

Embodiment 3

[0046] The raw material in Example 2 was treated with DMSO, wherein the weight ratio of DMSO to raw material was 4 / 1.

[0047] The properties of the plasticizers thus obtained are listed in the table.

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Abstract

The present invention relates to the method for preparing the elasticizer which includes purifying the petroleum distillate and separating the extractive by the selective solvent, the extractive is treated by dimethylsulfoxide with weight ratio 1 :( 2.0-4.0) at the temperature ranging from 30 to 120 degree, and the gained raffinate is used as elasticizer. The extractive is the remaining extractive or the mixture of the remaining and the distilled extractive. The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5). The elasticizer includes the following components: the aromatic hydrocarbons with the weight percentage from 60 to 90, wherein the polycyclic aromatic hydrocarbon provided with three or more rings is 1.5 to 2.9 percentages by weight; the rest is alkane-cycloparaffin and resin.

Description

technical field [0001] The invention relates to chemical industry or oil refining industry, and can be used in the preparation of oil plasticizers for synthetic rubber and tires. Background technique [0002] Aromatic petroleum-plasticizers currently prepared from selectively processed extracts of petroleum fractions contain high levels of carcinogens, namely polycyclic aromatic hydrocarbons (PCAs) with three or more rings, especially benzo(a)pyrene ( Benz(a)-pyren). When tires containing said plasticizers are used, significant amounts of carcinogens, mutagens and toxic substances are released into the atmosphere. According to Directive 2005 / 69EU of the European Parliament and EUC of November 16, 2005, since January 1, 2010, according to method IP-346:1998, if the petroleum plasticizer contains more than 3.0% PCA, the Petroleum plasticizers cannot enter the market and be used in the manufacture of tires and their components. [0003] According to IP-346: 1998, selectively...

Claims

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Application Information

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IPC IPC(8): C08K5/03C10G21/22
Inventor 尼古拉·弗拉基米罗维奇·霍多夫安德烈·费奥多罗维奇·库伊莫夫塔拉斯·伊万诺维奇·多林斯基
Owner ORGKHIM BIOCHEM HLDG MANAGEMENT
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