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.




Mental Health Awareness Week 10th-16th May

Nature & Humanity Seqens Custom Specialties recognises Mental Health Awareness Week 2021. This year’s theme was ‘Nature and the Environment’, with the objective to…

Fully overbased calcium sulfonate customisable grease for optimum performances

OVERBASED CALCIUM SULFONATE GREASES A grease consists of three components: a thickener, a base oil and additives. They are classified in two main…

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…

Seqens global presence

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Industrial units worlwide


End markets


Employees within the network


Customers in more than 80 countries


R&D centers