Enzymes turning waste into value

Rheiazymes Pioneer Molecular Recycling -
Closing the Recycling Gap

Today, for 47% of everything that goes to waste. In some industries,
like textiles it's even up to 95%.

This is mostly due to the challenges that mixed and compound materials pose on traditional recycling options.

With molecular recycling, products that today are seen as non-recyclable or hard-to-recycle (such as textiles, electronics and compound packaging) become recyclable. Molecular recycling retrieves valuable raw materials in the process, thus allowing entire value chains to shift to a circular economy model.


Of the 102 million tonnes of textile fibres produced every year, less than 1% of the material used is recycled into new clothing. (Source: Ellen McArthur Foundation)


With over 50 million tonnes of electronic waste (growing by approx. 5% a year) molecular recycling offers an efficient and economical option to retrieve rare earths from (printed) circuit boards. (Source: Springer Nature, UK)


The trend to use less plastic packaging has led many manufacturers to use more paper packaging. However, using plastic admixtures for functionality (compounds), making recycling of packagings even more challenging. (Source: BVSE, Germany)


“As process architects for molecular bio recycling Rheiazymes delivers solutions to pivot entire industries to circular value chains."

Rheiazymes molecular recycling aims to decarbonize industries such as fashion
- the world's 4th most polluting industy - while turning waste into value
(global yearly value of yarn lost in waste $ 500 billions).


Closing recyling gaps and enabling circularity and therewith saving land, water, fossile and other primary ressources.


Reduce up to 45% of the industrial GHG emissions (=~5% of the global GHG emissions). Reduce emissions caused by consumer waste as well as in production with a zero emissions recycling process.


No toxic by-products (as in chemical recycling).



Rheiazymes' Technology for
Textiles getting circular

YARN-TO-YARN® is our commitment to closing the recycling gap for synthetic yarn blends and functional textiles through our Molecular Bio-Recycling technology. Using natural enzymes, we recover raw materials on a molecular level - in a purely biological process inspired by nature.

Our flagship project is developing the technology for polyamide-elastane (PA/EA) blends and establishing a circular YARN-TO-YARN® ecosystem.

To bring this game changing technology to market, we partner with forward-thinking textile companies and the Migros Pioneer Fund who share our passion for sustainability and innovation and who are unafraid to challenge the status quo. Together, we are creating a new industry standard - one that values the environment and the future of our planet as much as financial results.

Made possible by
Migros Pioneer Fund
Part of the social commitment of the Migros Group: migros-engagement.ch

The Migros Pioneer Fund looks for and supports ideas with social potential. It enables pioneering projects that break new ground and seek out forward-looking solutions. Its impact-oriented funding approach combines financial support with coaching services. The Migros Pioneer Fund is part of the Migros Group's social commitment and is enabled by the Migros Group with around CHF 15 million annually.

Find out more at www.migros-pionierfonds.ch

YARN-TO-YARN® is Rheiazymes lighthouse project for the textile industry. Backed by the Migros Pioneer Fund, the project is now entering the practical phase, the aim being to establish a pilot facility for enzyme production, test the process with partners from the fashion industry and bring the technology to industrial maturity.

Find out more at www.yarn-to-yarn.org

and https://engagement.migros.ch/en/news-projects/climate-resources/yarn-to-yarn


About us

Experienced, interdisciplinary & diverse team.
Savvy in Biotech, Engineering, Patent Development and Entrepreneurship

Sandra Grimmer

CEO & Co-Founder

Business Dev. Strategic Partnerships, Fundraising

MBA in Intl. Mgmt. & Affairs, Stakeholder Management in global Biotech company, 20 years Entrepreneurship of which 5 in textiles and fashion

Roland Grimmer

CTO & Co-Founder

Research & Development, Operations

Dipl. El. Engineer, eMBA, Experienced in leading a global support organization, ensuring know-how transfer


Chantal Schmelz


Finance, Compliance, Public Affairs

M.A. in Economics, CAS in Media Relations
Experienced head corporate communications and investor relations.

Prof. Dr. Margarita Ramírez-Carmona

Scientific Advisor

Plant Architecture

PhD in Biochemical, Processes Head of CIBIOT Center of Studies and Research in Biotechnology at the UPB University, Medellin. Patent co-developer MEDELLIN, COLOMBIA

Prof. Dr. Carlos Ocampo-López

Scientific Advisor

Scientific Research & Development

PhD in Engineering, 15 years in Biotechnology, Certified by WIPO in patent writing. Advisor to the UNEP United Nations Environment Program for Green Chemistry

Prof. Dr. Leidy Rendón-Castrillon

Scientific Advisor

Enzyme Design

PhD in Engineering, M.Sc. in Biotechnology, R&D for projects in the area of environ-mental biotechnology, fermentation, organic extraction, process control and development of high value-added raw materials.

“We strive to change how we think recycling as an industry and as a society. Leveraging the potential of waste to make a triple impact - environmentally, socially and financially.

Innovation Partners

Network Partners

Incubators & Awards

Funding Considerations
Impact Investing with Rheiazymes

Rheiazymes is currently running its Seed Round interested in partnering with a close group of Early-Stage investors to accelerate its pilot plant phase. Rheiazymes is targeting closing the Seed funding until March 2024.

Interested parties may get in contact with the CEO, Sandra Grimmer to discuss the options for their impact investment into Rheiazymes.

Your Impact Investment in Rheiazymes with the benefit of 3x returns:
1) environmental return: reduce GHG emissions
2) social return: zero pollution, increase of quality of life
3) financial return: unlock untapped market potential

Get in contact, make an impact!

For further information, intro calls or any kind of impact you would like to make on how recycling is being seen in the future, please get in contact with us.

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Rheiazymes AG

Oberdorfstrasse 5

8934 Knonau



+41 79 739 24 04


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