Custom chemistry to make you succeed

A leader in custom manufacturing and specialty ingredients

Custom Manufacturing

This is Seqens Advanced Specialties and Seqens Custom Specialties' core activity. We are a specialist in custom chemistry supported by a wide range of technologies, R&D skills and global assets.


Performance Products

We offer an extensive range of products such as low toxicity, environmentally friendly solvents for paints, coatings, industrial and household cleaners. We also offer the realization of complex molecules resulting from an intense research and development process.



Distilled Seqens’ Solvent Recovery activities stem from a continuous collaboration with numerous industry leaders for the recovery of solvents and solvent by-products.


A continuum of technologies

Seqens offers complete and fully integrated R&D services to support your project from initial stage to commercial manufacturing in total compliance with the highest quality, safety and environmental standards.

We strongly believe in the potential of new cutting-edge technology to improve the use and efficiency of existing ingredients.




Better Health at Work – Maintaining Excellence Level Achieved

Congrats to the teams ! In March, it was confirmed that the Seqens Middlesbrough and Billingham sites had achieved Maintaining Excellence Level for their…
New product & technology

How SEQENS is improving ARCOT® calcium sulfonates range?

Our expertise in the lubricants industry In the lubricant industry, SEQENS Advanced Specialties supports its customers for the development and the formulation of…
New product & technology

TEXTENS cross-linking agents for textile fibers, explore SEQENS’s expertise of triazines

About SEQENS Advanced Specialties With more than 50 years of experience in scaling up and custom manufacturing of small molecules and polymers, SEQENS Advanced…

Seqens global presence

Use interactive map

Industrial units worlwide


End markets


Employees within the network


Customers in more than 80 countries


R&D centers