SU298206A1 - METHOD OF OBTAINING MULTIFUNCTIONAL FITTINGS - Google Patents

Description

The invention relates to methods for producing additives for oils, in particular succinamide additives.

A known method for producing an additive to oils by reacting a polymer, such as a polyolefin (mol. Weight 300-3000), with maleic anhydride in the presence of benzoyl peroxide followed by reacting the resulting succinic anhydride with a polyamine. However, the additive obtained in this way is not sufficiently effective.

C-b-CH7-CH4-f H N- -CHsCHoNH-bHI XY 1d-p

CH-CH,

with,

In order to increase the effectiveness of the additive, it is proposed to use a polymer with mol. weighing 6000-200000.

The reaction, depending on the viscosity of the medium "used initiator, is carried out in a solvent or without a solvent at temperatures from 50 to 250 ° C (mainly in the range of 100-200 ° C).

The reaction of obtaining succinimides proceeds according to the scheme:

RR

-ffCHo-C-b-tCH.-CH L -

CH-CH7

T 4CH7-CH-2NH- H

Example 1. A three-liter flask with a volume of 0.5 l equipped with a stirrer, a reflux condenser and a thermometer was charged with 100 g of atactic polypropylene (mol. Weight), 10 g of type anhydride, 200 ml of xylene and 3 g of benzoyl peroxide. The mixture is heated to boiling with stirring (140 ° C). Then, with stirring, the cues are t for 5 hours. After that, xylene is distilled off at atmospheric pressure to a vapor temperature of 150 ° C. Then, a vacuum is gradually created (up to 15 mmHg) and the unreacted maleium anhydride is prepared. After that, stand iri 150 ° C and 15 mm Hg. Art. for 0.5 hours, the infrared spectrum of the product obtained proves that IB contains succinic hydride ripynnH. Their content, calculated on the basis of the elementary analysis and the saponification number, is 8.8 wt. % EXAMPLE 2 A three liter flask with a volume of 2 liters, equipped with a stirrer, a reflux condenser and a droplet tube, was charged with 750 g of melted atactic polyyroylene (mol. Weight 10,000), 500 ml of xylene and 40 g of maleic anhydride. A solution of 7.5 g of bepzoyl peroxide in 100 ml of xylene is poured into the dropping funnel. The mixture, while stirring, heated to boiling and a solution of bepsoyl peroxide was added dropwise for 2 hours. Then, at atmospheric pressure, xylene is heated to a vapor temperature of 150 ° C, and the pressure is reduced to 100 mm Hg. Art., distilled from xylene residues and unreacted maleic anhydride. Then the pressure shine up to 10-15 mm Hg. Art. and raise the temperature to 200 ° C. Under these conditions, the offal is maintained for 1 hour. Content suiccinium hydride in the resulting polymer is 4.1 wt. % PRI me R 3. The reaction was carried out in a 2 l three-flask flask equipped with a reflux condenser with a Dean-Stark trap, a stirrer and an addition funnel. Bring the mixture to a kiyena and serve, with stirring, polyelelectrolipes at such a rate that there is no excessive melting. Then cues t another 1 hour. During this time, about 3 ml of water is released (theoretical amount is 3.5 ml). After that, xylene is distilled at atmospheric pressure to a temperature in the vapors of 150 ° C. Then gradually reduce pressure to 200 mm Hg. Art. and adjusted to 200 ° C. Under these conditions, it is kept for 0.5 hour. Then the residual pressure is adjusted to 15 mm Hg. Art. and incubated for another 0.5 hour, and then cooled in vacuum to 150 ° C, and another 510 g of spun “AU” oil was added under stirring. The nitrogen content in the additive is 1.8%. The resulting additive is a 50% solution of iothiropylenesuccinimide in oil. The data presented in the table show the effectiveness of the obtained iris.