Allessa GmbH

Allessa is one of the most experienced and innovative European fine chemical manufacturers. Our offering spans from proprietary products to custom manufacturing with leading positions in pigments, ligands, cosmetic ingredients, polymers and stabilizers.

From first synthesis idea to the largest commercial volumes, we develop and produce either your or our own proprietary chemistry. Operational excellence enables an attractive lifecycle management for continuous commercial success.

Important markets:

Ligands and Catalysts
Pigments and Dyes
Cosmetic ingredients

Agrochemical compounds
Functional polymers
Stabilizer

We have a broad variety of technologies and complex synthetic capabilities, paired with more than 150 years of experience in organic chemistry and a strong heritage in fine and unique performance chemicals.

History

1870	Birth of Frankfurter Anilinfabrik von Gans und Leonhardt in Fechenheim
1879	The Fechenheim site growth to the world´s largest Azo dye production
1925	Establishment of Cassella Farbwerke Mainkur AG
1952	The Fechenheim site growth to the world´s largest Azo dye production
1996	Acquisition by Hoechst AG
1997	Acquisition of fine chemical business by Clariant AG
2001	Spin off AllessaChemie GmbH
2012	Integration of Allessa Syntec GmbH (former central pilot plants of Hoechst AG) into AllessaChemie
2013	Acquired by ICIG, integration into WeylChem Group of Companies and name change to Allessa GmbH

Industrial park

Our industrial park with a focus on chemicals hosts more than 15 companies with a wide range of activities from chemical production to life science tools, pharmaceutical research and sustainable power generation. We offer a fully integrated site operating 24/7 with its own energy generation and distribution, wastewater treatment plant, own professional fire brigade, as well as electrical and mechanical workshops.

Capabilities

1 multi-purpose pilot plant for smaller scale (50 kg to 1 ton per year), reactors up to 1 m3 volume.

4 large-scale multipurpose plants for commercial volumes from 10 to 10.000 tons per year and product; reactor sizes up to 30 m3 volume

More than 200 batch reactors from 0,5 to 30 m3 volume summing up to over 2.000 ³ total reactor volume in a large variety of available materials as glass lined, ceramics, carbon steel, stainless steel of different grades, alloys, etc.

Expertise

Products

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CAS-No: 92-84-2

Phenothiazine Prills

CAS-No: 68957-94-8

Allessan® CAP

CAS-No: 345260-48-2

Velvetol®

Services

Research & Development

We offer chemistry research programs, process optimization, compound & custom synthesis plus excellent scale up capacities and a fully equipped kilolab.

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Custom Manufacturing

From lab samples to commercial volumes, our services and technologies are intelligently combined ensuring you benefit from efficient processes and custom manufactured products of the highest quality.

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Certificates

ISO 9001

ISO 14001

ISO 50001

Ecovadis Gold Medal

Fully committed to follow Voluntary Guidelines of EFCG / CEFIC

Location

Allessa GmbH

Alt-Fechenheim 34 60386 Frankfurt

+49 69 4109-01

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