Process for thermally reacting highly reactive polymers and enophiles

An enophile and reaction product technology, which is applied in the low-sediment field of thermal reaction between high-activity polymers and enophiles, and can solve problems such as increasing yield

Inactive Publication Date: 2005-03-16
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Note that the use of phenothiazine alone can reduce tar and increase yield to some extent, but this improvement is not as obvious as when phenothiazine and halogenated hydrocarbon are used together
There is no mention of the effect of the sediment, and the patent states that the final product must be filtered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The effect of free radical inhibitors on the amount of deposits generated by the thermal reaction of conventional polyenes with enophiles can be determined by comparing conventional polyisobutylene (“PIB”) with maleic anhydride (“MALA”) at different MALA:PIB ratio, determined by thermal reactions in the presence and absence of phenothiazine. The M of the PIB used in the example below n It is about 950, and the terminal vinylidene content is ≤5%. The result looks like this:

[0056] example

MALA:PIB

(The molar ratio of)

phenothiazine

(ppm)

Reaction temperature / time

(℃ / hour)

SAP

(mgKOH / g)

sediment

(weight%)

Comparative example 1

1.26∶1

0

235 / 5

78

2.2

Comparative example 2

1.26∶1

100

235 / 5

87

3.2

Comparative example 3

1.26∶1

300

235 / 5

65

1.6

Comparative example 4

1.26∶1

500

235 / 5

69

1.2

Comparative exampl...

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PUM

PropertyMeasurementUnit
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Abstract

A process for the preparation of ene reaction products in which an enophile, such as maleic anhydride, is reacted with a reactive polyene having a terminal vinylidene content of at least 30 mole percent at elevated temperature in the presence of a free radical inhibitor. The polyalkenyl acylating agent itself can be used as an additive in lubricating oil, functional fluids and fuels, and can also be used as an intermediate to prepare other products used as additives in lubricating oils, functional fluids and fuels (such as succinyl amine). The presence of free radical inhibitors in high temperature reaction processes can produce reaction products with low or substantially no deposits.

Description

technical field [0001] The present invention relates to a low-sediment thermal reaction process for the preparation of oil-soluble polyalkenyl acylating agents by reacting highly reactive polyenes with enophiles in the presence of free radical inhibitors. More particularly, the present invention relates to the reaction of an enophile, such as maleic anhydride, with a reactive polyene having a terminal vinylidene content of at least 30 mole percent at elevated temperature in the presence of a free radical inhibitor. The polyalkenyl acylating agent itself can be used as an additive in lubricating oil, functional fluids and fuel, and can also be used as an intermediate to prepare other products (such as succinimide) used as an additive in lubricating oil, functional fluid and fuel. ). The presence of free radical inhibitors in high temperature reaction processes can produce reaction products with low or substantially no deposits. technical background [0002] Polyalkenyl acyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/14C08F8/32C08F8/46C10L1/18C10L1/198C10L1/22C10L1/2383C10M129/95C10M133/56
CPCC08F8/46C08F8/14C08F8/32C10L1/198C10L1/2383C10M129/95C10M133/56C10M2207/34C10M2215/28C08F10/10
Inventor M·D·欧文R·W·肖J·R·斯宾塞J·埃默特
Owner INFINEUM INT LTD
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