ISOLENE® 40-S is a low-molecular-weight liquid polymer derived from synthetic polyisoprene rubber. It offers the performance of natural rubber with the added benefit of a lighter color and none of the natural impurities inherent in natural rubber products. ISOLENE® 40-S is a lower viscosity liquid than the other ISOLENE® liquid rubber products. It is a translucent, honey-colored liquid in bulk form and virtually clear in a thin film.

Polymer Name: Polyisoprene (IR)

Chemical Family: Polyisoprenes

Functions: Binder & Resin, Extender, Processing Aid

Labeling Claims: Impurities-free

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Properties

Color (Properties)
Physical Form
Appearance
Light amber liquid
Typical Properties
ValueUnitsTest Method / Conditions
Storage Temperature66°C-
Viscosity (at 121°C)1000cPs-
Viscosity (at 25°C)120000cPs-
Viscosity (at 52°C)15000cPs-
Viscosity (at 93°C)2300cPs-
Viscosity (at 80°C)3300cPs-
Viscosity (at 149°C)500cPs-
Viscosity (at 66°C)7000cPs-
Handling Temperaturemax. 121°C-
BasePolyisoprene--
Technical Data
ValueUnitsTest Method / Conditions
Glass Transition Temperature (visual)-65°CInternal Test Method
Volatile Content0.87Wt(%)ASTM D1416
Specific Gravity0.92-ASTM D1875
Density7.7lb/galASTM D1875
Ash Content0.1Wt(%)ASTM D1416
Solid Content100%-
Flash Point240°C-
Molecular Weight (average molecular weight)32000-Gel Permeation Chromatography
Viscosity (at 38°C)36,000 - 55,000cPs-
Degree of Unsaturation92% (mol)Ozone Analysis
Color Scalemax. 8GardnerGardner Color Scale

Technical Details & Test Data

Viscosity

ISOLENE® 40-S is a low molecular weight grades of synthetic polyisoprene. They are viscous liquids at typical processing temperatures. The following table indicates the viscosity (cp) at typical conditions.

Temperature Viscosity (cP)
25°C 120,000
66°C 7,000
93°C 2,300
80°C 1,000
121°C 3,300
149°C 500
38°C 40,000
149°C 15,000

Packaging & Availability

Packaging Type
Regional Availability
  • Asia Pacific
  • Europe
  • Global
  • India/MiddleEast/Africa (IMEA)
  • Latin America
  • North America
Typical Packaging

Typical Packaging ISOLENE® 40-S is available in the following standard packages:

  • 34 lb. steel pail
  • 350 lb. steel drum

Storage & Handling

Shelf Life
2 years
Handling
  • ISOLENE® products are viscous polymers. Heating the drums lowers the viscosity for easier handling. Vent the drums before heating to avoid pressure build up.
  • Avoid exposing ISOLENE® products to temperatures above 121°C. The polymer may form a skin and it may darken.
  • ISOLENE® polymers can be compounded with virtually any type of rubber processing equipment. Processing requirements vary with the desired finished properties and with the other formulation ingredients.
Storage Condition

Store in a dry environment to prevent damage to the packaging. The liquid rubber products are stable over a wide temperature range. They are not damaged by freezing temperatures or occasional short-term exposure to temperatures of 66°C.