MultiTech DiFunctional D

Identification

Chemical Family

Polyisoprenes

Polymer Name

Polyisoprene (IR)

Blend

false

Single Ingredient

true

Categories

Markets → Electrical & Electronics → Applications → Packaging & Assembly → Adhesives & Sealants

Markets → Consumer Goods → Applications → Appliances & Electronics

Markets → Adhesives & Sealants → Applications → Industrial & Assembly Adhesives → Electronics Adhesives

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Fluids & Lubricants

Technologies → Elastomers → Product Families → Thermoset Elastomers → Isoprene Rubbers (IR)

Technologies → CASE → Product Families → Resins & Binders → Other Resins & Binders

Technologies → Fluids & Lubricants → Product Families → Additives → Performance Additives

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Tooling & Moldmaking

Applications

Compatible Substrates & Surfaces

Elastomers & Rubbers

Applications & Uses

Applications

MultiTech DiFunctional D is ideal for pressure sensitive adhesive (PSA) formulations based on block copolymers.
Typical applications include the following:

• Rubber and polymer processing aid.
• Reactive vehicle for powdered additives.
• Rheology modifier for lubricants.
• Polymer base for molding and tooling systems.
• Polymer base for electrical encapsulants.
• Production of pressure sensitive adhesives.

H.B. Fuller offers a Compounding Guide with starting point formulas for these and other applications.

End Uses

Adhesive & Sealant End Applications

Pressure Sensitive Adhesive

Plastics & Elastomers End Uses

Encapsulant

Features

CASE Ingredients Features

Low Bleed Through,

Good Tack

Materials Features

High Viscosity,

Low Molecular Weight,

Translucent

Features & Benefits

Features and Benefits

MultiTech DiFunctional D provides many performance properties in adhesive formulations and other compounds.

• Softens the resin
• Improves low-temperature tack
• Improves the resistance to bleed through
• Acts as an efficient vehicle for powdered additives and curatives into a rubber compound
• MultiTech DiFunctional D liquid synthetic rubber cures by the same mechanism as polyisoprene rubber.
• It can replace rubber 1:1. A slight increase in curative levels may provide optimum performance when using levels above 15-20 phr of MultiTech DiFunctional D.

Functions

CASE Ingredients Functions

Binder & Resin

Fluids & Lubricants Functions

Rheology Modifier

Function

Binder, Rheology Modifier

Packaging & Availability

Packaging Type

Drums

Packaging Information

MultiTech DiFunctional D is available in the following standard packages:

330 Lb. steel drum

Properties

Color (Properties)

Amber,

Translucent

Physical Form

Liquid

Regulatory & Compliance

Chemical Inventories

DSL (Canada),

TSCA (USA)

Storage & Handling

Handling and Storage Conditions

• MultiTech DiFunctional D are viscous polymers. Heating the drums lowers the viscosity for easier handling. Vent the drums before heating to avoid pressure build up
• Avoid exposing MultiTech DiFunctional D to temperatures above 121°C (250°F). The polymer may form a skin and it may darken.
• MultiTech DiFunctional D 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.
• 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 (150°F).
• The shelf life is a minimum of two years if stored properly in an unopened container.

Technical Details & Test Data

Viscosity

MultiTech DiFunctional D 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/77°F	1,000,000
38°C/100°F	380,000
52°C/125°F	170,000
66°C/150°F	110,000
80°C/175°F	50,000
93°C/200°F	23,000
121°C/250°F	13,000
149°C/300°F	8,000