The Germany-based firm’s 1-butene capacity in Marl Chemical Park will be expanded by 75,000 tons.
1-butene is principally used as a co-monomer in the production of high-value plastics such as polyethylene.
"With this investment we are expanding our technology leadership and our premier market position in C4 chemistry on a long-term basis,” said Dr. Dahai Yu, Evonik executive board member.
“At the same time, we are supporting the growth plans of our customers in Europe and overseas."
Evonik is also investing in other C4-based products and said the total cost will be hundreds of millions of euros with the expansions scheduled to go on stream in 2015.