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Lanxess Develops Green Replacement For Fossil-Based Prepolymers

Aug. 19, 2020
Lanxess launches bio-based prepolymer line Adiprene Green.

Lanxess launches bio-based prepolymer line Adiprene Green.

Specialty chemicals company Lanxess develops a new range of MDI polyether prepolymers containing renewable, bio-based raw materials. Marketed under the brand name Adiprene Green, the products are reportedly suitable as replacement for existing fossil-based polyether prepolymers to manufacture highly durable polyurethane (PU) elastomers.

The objective of Adiprene Green was to create a range of bio-based prepolymers that allow the PU processor to produce components with a reduced CO2 footprint, according to the company. Depending on the system, a CO2 reduction between 20 – 30%  is possible compared with fossil-based prepolymers due to the use of polyether polyols based on starch. The share of bio-based raw materials varies between 30 – 90% dependent on the targeted system hardness. The existing PU processing capabilities remain applicable and the properties of the final polyurethane elastomer are similar to established elastomers based on fossil-based polyether.

Adiprene Green prepolymers are easy to handle; they are processed in an identical manner to conventional prepolymers, according to the company. No modifications to material handling, process temperatures or mixing ratios are necessary. In addition, the reactivity profile and demolding times are similar to fossil-based polyether prepolymers.

When reacted with 1,4 butanediol, a range of PU elastomers with a hardness from 40 Shore A to 60 Shore D are achievable. As the PU system is versatile, Adiprene Green can be hand-mixed or machine mixed. The prepolymers can be processed with Vibracat catalysts from Lanxess. Adiprene Green products are suited for demanding applications such as roll covers, wheels, press sleeves or non-pneumatic tires.

For more information, visit: www.lanxess.com

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