Ashless DispersantsNova Additives

DS-1305

Polyisobutenyl succinimide (PIB 1300), very high TBN

TBN minimum 130 and nitrogen up to 4.5 % — the most concentrated dispersant in the catalogue. Used where acid neutralisation reserve and soot capacity both have to come from one component.

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Typical propertiesLiquid

Backbone: PIB 1300
Nitrogen: 3.9 – 4.5%
Boron: —
TBN: Min. 130mg KOH/g

Typical values, not a specification. The binding specification is the one on the certificate of analysis issued against each batch.

Chemical identity

CAS number: 84605-20-9

Cross-reference

Grades a formulator would benchmark DS-1305 against. Naming them is not a claim of equivalence — it is where to start the comparison.

Lubrizol 6404Infineum C9250Afton HiTEC 644

The chemistry

Ashless Dispersants

Soot and sludge suspension in engine oils

Typical treat rate2.0 – 8.0 %

Polyisobutenyl succinimides — a polar head that binds contaminant, an oil-soluble PIB tail that keeps it suspended. This is the largest additive class by volume in any crankcase formulation. Borated grades add antiwear and improve seal and thermal performance; higher-TBN grades carry more acid-neutralising reserve.

Used in

Passenger-car & heavy-duty engine oilsMarine cylinder oilsTwo-stroke oilsTransmission fluidsFuel additive packages

Where DS-1305 is specified

Engine Oils

Passenger-car, heavy-duty and gas engine crankcase formulations, including low-SAPS.

Driveline & Transmission

Automatic and manual transmission fluids, axle oils, EV reduction-gear fluids.

Other grades in Dispersant

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Documentation

A full technical data sheet, safety data sheet in the language of the receiving country, REACH status statement and SVHC declaration are issued with every enquiry for DS-1305. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.

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