Preparation of polyalkenylsuccinic acid derivatives and their us

Details Preparation of polyalkenylsuccinic acid derivatives and their us Preparation of polyalkenylsuccinic acid derivatives and their us

1996-05-22

1999-03-16

Wilson, Donald R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525301, 525303, 525309, C08F25510, C08F25500

Patent

active

058831967

ABSTRACT:
Polyalkenylsuccinic acid derivatives are prepared by reacting oligo- or polyolefins having a number average molecular weight (M.sub.N) of from 500 to 10,000 with maleic acid derivatives I ##STR1## where R and R', independently of one another, are each hydroxyl, lower alkyl or halogen or together are oxygen, at elevated temperatures by a process in which effective amounts of free radical acceptors, such as oxygen, are present in the gas phase and in the liquid phase of the reacting system during the reaction. These polyalkenylsuccinic acid derivatives are suitable, after additional imidation, amidation or esterification, as fuel and lubricant additives.

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Gabara et al., Journal of Polymer Science: Part A-1, vol. 5, Grafting in Reaction of Polyethelene and Poly(maleic Anhydride), pp. 1539-1545 (1967).

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