Process for making curable amide gellant compounds

Details Process for making curable amide gellant compounds Process for making curable amide gellant compounds

2007-09-18

2007-09-18

Richter, Johann (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C554S037000, C564S153000

Reexamination Certificate

active

11289882

ABSTRACT:
Disclosed is a process for preparing a compound of the formulawherein R1is an alkyl group having at least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, or an alkylaryl group having at least one ethylenic unsaturation, R2and R3each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups, R4and R5each, independently of the other, is a hydrogen atom or an alkyl group, and n is an integer representing the number of repeat amide units and is at least 1, said process comprising: (a) reacting a diacid of the formulain-line-formulae description="In-line Formulae" end="lead"?HOOC—R2—COOHin-line-formulae description="In-line Formulae" end="tail"?with a diamine of the formulain the presence of a catalyst, a solvent, and a coupling agent to form an oligoamide intermediate;and (b) reacting the oligoamide intermediate with an alcohol of the formulain-line-formulae description="In-line Formulae" end="lead"?R1—OHin-line-formulae description="In-line Formulae" end="tail"?to form the product.

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English abstract for German Patent Publication DE 4205636AL.
English abstract for German Patent Publication DE 4205713AL.

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