POLYVEST®

LIQUID POLYBUTADIENES

With POLYVEST® we offer a range of stereospecific, low viscous and unsaponifiable liquid polybutadienes with different chemical compositions.

Based on their characteristic microstructure, all POLYVEST® grades exhibit excellent reactivity and can be used for a broad variety of applications, e.g. in the automotive, construction and electronics industry.

The unsaturated polymer backbone of our liquid polybutadienes offers the opportunity for various crosslinking options, like sulfur curing and oxidative drying. Our functionalized POLYVEST® grades provide further options for crosslinking and additional benefits.

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Product portfolio liquid polybutadienes

Our POLYVEST^®product portfolio consists of the following grades

Product	Description
POLYVEST® 110 POLYVEST® 130	non-functionalized liquid polybutadienes apolar, hydrophobic manufactured via Ziegler-Natta polymerization high amount of 1,4-cis double bonds grades differ in viscosity and molecular weight
POLYVEST® EP MV	non-functionalized liquid polybutadiene apolar, hydrophobic manufactured via Ziegler-Natta polymerization high amount of 1,2-vinyl double bonds
POLYVEST® MA 75 POLYVEST® EP MA 100	maleic anhydride functionalized liquid polybutadiene anhydride groups make originally apolar polybutadiene more polar grades differ in maleic anhydride content and viscosity
POLYVEST® HT	hydroxyl terminated liquid polybutadiene manufactured by radical polymerization primary hydroxyl groups are accessible for precise chemical modification
POLYVEST® ST-E 60 POLYVEST® ST-E 100	silane terminated liquid polybutadiene manufactured by radical polymerization and further functionalization advantages of liquid rubbers and functional silanes are combined silane functionalities allow surface modification of hydrophilic silica fillers grades differ in degree of functionalization
POLYVEST® EP MAT	methacrylate terminated liquid polybutadiene manufactured by radical polymerization and further functionalization beneficial for broad range of applications, incl. UV curing technologies

Key benefits of POLYVEST® liquid polybutadiene grades

Low viscosity
Excellent chemical resistance to acids and bases
High water resistance
Excellent electrical insulation properties
Low temperature flexibility
Low moisture and oxygen permeability

Markets and Applications for POLYVEST® Liquid Polybutadienes

Automotive

POLYVEST® is used in adhesives and sealants for head lamps, sound damper and body & paint shop applications. Additionally, our liquid polybutadiene is added to green tire formulations as reactive plasticizer and substitute for TDAE oil.

Construction

POLYVEST® grades are used in secondary sealants for window glazing, in binder of dusty and dry quartz sand as well as in binder for soil stabilization. Moreover, POLYVEST® can be added as modifier to silicone sealants.

Electronics

POLYVEST® can be used as binder in PU formulations regarding electrical insulation and potting compounds. POLYVEST® MA can substitute isocyanates and act as isocyanate-free hardener.

Printing and Inks

POLYVEST® is employed as reactive plasticizer for flexo printing plates and as pigment wetting agent for offset printing inks.

Rubber

POLYVEST® is used as a binder for recycled rubber compounds, modifier in carbon black filled EPDM compounds and as plasticizer in rubber compounds.

Plastics

In the plastics industry, POLYVEST® acts as additive for PU foams, either as cell opener or as release agents.

Aerospace

POLYVEST® HT-A is used as a binder in solid rocket propellants. The liquid polybutadiene reacts with isocyanates to form the necessary urethane network.

Sustainability & POLYVEST® liquid polybutadienes

We have a strong focus on sustainability – both regarding our products (Footprint) but also the applications they are used in (Handprint).

Footprint

The following POLYVEST® grades are available as POLYVEST® eCO:

POLYVEST® eCO 110 Bio
POLYVEST® eCO 130 Bio
POLYVEST® eCO 130 S Bio
POLYVEST® eCO MA 75 Bio
POLYVEST® eCO HT Bio
POLYVEST® eCO ST-E 60 Bio

For improving the footprint, we use raw materials from alternative sources and offer a drop-in solution with a lower carbon footprint.

More about our sustainable POLYVEST® eCO for adhesive and sealant applications.

Handprint

The handprint describes the positive sustainable effect on specific applications. See our two examples:

POLYVEST® HT in window glazing in Sustainability Report 2022
POLYVEST® ST-E for green tire formulations as featured in the Evonik Next Generation brochure (page 34).

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