Lone Star is assembling a global engineered-materials platform by combining two European polyamide producers.

An affiliate of Lone Star Fund XII has completed the acquisition of DOMO Engineered Materials, a division of DOMO Group, and intends to merge it with the High Performance Polymers and Specialty Chemicals businesses of RadiciGroup, which the firm purchased in a separate deal.

DOMO Engineered Materials develops and produces polyamide-based compounds under the TECHNYL brand, serving automotive, electrical and electronics, building and construction, consumer goods, and industrial end markets.

The company, with nearly 70 years of experience, offers specialized material grades for lightweighting, flame resistance, water and food contact, electrical insulation, and extrusion.

Its TECHNYL 4EARTH line incorporates recycled and bio-based content to support customer circular-economy targets.

RadiciGroup is a vertically integrated manufacturer of chemical intermediates, polyamide polymers, and high-performance engineering polymers with overlapping end-market coverage.

The combination creates a platform with a complementary product portfolio, broader geographic reach, and extensive R&D capabilities across the polyamide value chain.

Lone Star Chief Executive Donald Quintin said the combined business will bring broad development, manufacturing, and technological resources to customers in automotive, electronics, and other industrial sectors.