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Lion Elastomers SBR 1769

SBR 1769 is an environmentally friendly version of SBR 1721 with the highest bound styrene content, and a naphthenic oil extender oil. It was developed for tire applications.

Polymer Name: Emulsion Styrene Butadiene Rubber (ESBR)

Additives Included: Antioxidant

Features: Cold Polymerized, Oil Extended

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Knowde Enhanced TDS

Identification & Functionality

Additives Included
Technologies

Features & Benefits

Unique Features
  • Cold polymerized styrene-butadiene elastomer
  • Highest bound styrene and naphthenic oil extender

Applications & Uses

Applications
  • Passenger & heavy-service treads
  • Retread rubbers and bicycle tires
Usage Guidelines

Antioxidant is added to this polymer to provide protection during manufacture and storage. The end user’s process may require additional antioxidant protection.

Properties

Physical Form
Emulsifying System
Mixed acid
Typical Properties
ValueUnitsTest Method / Conditions
Ash Contentmax. 0.7wt %
Bound Styrene39.0-41.0wt %
Mooney Viscosity45-55MML 1+4 (100˚C)
Oil Content37.5parts – Naphthenic
Organic Acid Content4.1-5.7wt %
Polymer100parts
Soap Content0.5wt %
Specific Gravity0.93g/cc.ASTM D-792
Volatile Matter0.75wt %ZS 1008K
Rheometric Properties
ValueUnitsTest Method / Conditions
MH10.6-14.6lbf-inMDR 2000 Rheometer
MH12.0-16.5dN-mMDR 2000 Rheometer
ML1.2-3.2lbf-inMDR 2000 Rheometer
ML1.4-3.6dN-mMDR 2000 Rheometer
t’ 507.2-11.2minutesMDR 2000 Rheometer
t’ 9013.8-18.8minutesMDR 2000 Rheometer
ts 13.6-5.6minutesMDR 2000 Rheometer
Additional Information
ValueUnitsTest Method / Conditions
CoagulantAcid
StabilizerStaining

Regulatory & Compliance

Packaging & Availability

Packaging Type