Process for the preparation of multifunctional additive for aqueous lubricants
AssigneeCouncil of Scientific and Industrial Research
InventorsChattterjee Alok KUMAR, Tyagi Mange Ram, Ray Siddharth Sankar, Shekhar Indu, Bansal Ankushi
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Abstract
The present invention deals with a process for the preparation of multifunctional additive for aqueous lubricants. These I multifunctional additive for aqueous lubricant comprises of co-polymer having vinyl group containing polyhydric alcohol along with monomer selected from aqueous soluble acrylate co-monomer in different mole fraction for addition polymerization to facilitate the sequencing of monomer in polymer chain. Thus the polymeric molecule has been designed for improving tribological properties i.e. low wear, low friction and EP property of aqueous lubricants.
Claims10
A process for the preparation of multifunctional additive for aqueous lubricants which comprises:
- iv) copolymerizing glycerolmonomaleate with comonomer selected from the group consisting of acryalamide and vinyl acetate in a molar ratio in the range of 1:1 to 1:3 in a solvent selected from water or dimethyl formamide along with ceric/thiourea redox initiator or benzoylperoxide at a temperature in the range of 50-70° C. under nitrogen flushing and stirring condition for a period of 5-8 hrs to obtain polymer,
- v) optionally polymerizing glycerolmonomaleate with poly acryalamide, in a ratio of 1:5.26 to 1:4.26 wt basis in water at a temperature in the range of 60-90° C. at the pH of the medium 2-3 under nitrogen flushing and stirring condition for a period of 5-8 hrs to obtain polymer,
- vi) precipitating the polymer obtained in step i) and ii) in methanol or isopropyl alcohol to obtain desired product.
Dependencies are inferred from the claim text.