Co-reactive

Germany - Aachen

• 30/01/2026
• Seed
• $7,754,157

If the cement industry were a country, it would rank as the third-largest emitter of greenhouse gases, accounting for 8% of global emissions, following China and the USA. The cement production process releases substantial CO2 from limestone, highlighting the urgent need for solutions to harness and utilize these vast quantities of CO2. This is where Co-reactive steps in – a spin-off from RWTH Aachen University. We're developing an innovative process for CO2 mineralization, binding CO2 in solid form. This groundbreaking technology converts CO2 into solid carbonate that can be used as a sustainable resource. By incorporating our product into construction industry, we not only dramatically reduce the carbon footprint but also enhance the properties of construction material.

Related People

Andreas BremenCo Founder

Germany - Hamburg, Hamburg

I am a chemical engineer with a passion for solving technical challenges and driving decarbonization. Scientist by heart, I focus on developing solutions that can scale and transform entire industries.

As co-founder and CEO of Co-reactive, I am building a startup that develops and scales technology to turn CO₂ emissions into carbon-negative building materials—helping to transform the construction industry for good.

Motivated by impact and innovation, I believe that combining deep tech with execution is the key to real change.

Let’s connect and explore ideas for accelerating the transition to a sustainable future!

LinkedIn https://www.linkedin.com/in/andreasbremen/?originalSubdomain=de