KVIS 150 is the trade name of Kothari’s polyisobutylene with molecular weight ranging from 2100 to 2300. KVIS 150 is widely used as a viscosity index improver in engine oil additives and grease, and in high molecular weight PIBSA manufacturing.

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Technical Specifications

ParametersTest MethodSpecifications
Molecular Weight -Number AverageGPC2200 ±100
Viscosity @ 100 °C, cStASTM D-4452400 ± 250
Flash Point ( COC ), °C, min.ASTM D-92240
Colour - APHA (Max)ASTM D-120950

Product Information


KVIS Polyisobutylenes are used in manufacture of PIBSA, a widely used dispersant in lubricant industry.
PIBSA is used as ashless dispersant in the lubricant formulations to control deposits, sludge formation and to prevent oil thickening.
PIBSA based dispersant can help in improving the fuel economy.They also offer environmental benefits by decreasing the frequency of oil drains.
  • Miscellaneous
  • Stretch / Cling film
  • Greases for High Temperature applications.