Effects of various types of additives on properties of polyurea greases

Nikishina, Z. M.; Mitel'man, B. Yu.; Strashenko, M. Ya.; Shilova, Z. A.

doi:10.1007/bf00725784

Cited by 1 publication

(1 citation statement)

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“…Additives and modifiers commonly used in lubricating greases are oxidation inhibitors, pour point depressants, extreme pressure anti‐wear agents, and dyes or pigments. Most of these materials have much the same function as similar materials added to lubricating oils (Nikishina et al , 1987).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of amide polymers as antioxidants for mixed soap greases

El-Adly

Youssef

El-Sayed

et al. 2004

Pigment &Amp; Resin Technology

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This paper reports on the preparation of six formulations (G1‐G6) containing mixed soap greases based on cotton soap stock, aromatic extract, heavy alkylate and lube base oil. The physicochemical properties of these ingredients were characterised. The consistency, dropping point and mechanical stability of the formulated greases were assessed and tested in accordance with the National Laboratory for Grease Institute standards, and compared with the Egyptian Standards. The properties of the formulated grease G4 proved to be the best. The work reported also includes preparation of itaconyl‐o‐tolidine‐, itaconyl bisaniline‐ and itaconyl m‐phenylene‐ amide polymers. The structure of these polymers was investigated using infrared spectroscopy, micro analysis and gel permeation chromatography. The polymers prepared were evaluated as antioxidants for the optimum formulated grease G4. The study revealed that the itaconyl m‐phenylene amide polymer was a weak antioxidant, while itaconyl bisaniline‐ and itaconyl‐o‐tolidine amide polymers showed good anti‐oxidation property.

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Section: Introductionmentioning

confidence: 99%