
Story
Cross-linking made simple
The Ultra line from Covestro is a breakthrough collection of advanced, high-performance crosslinkers formulated to maintain a residual monomer content below 0.1%. Building upon proven formulations, this range maintains exceptional quality and durability, while helping to advance industrial hygiene standards.
Story · March 4, 2020
Regulatory compliance
Under REACH restriction Annex XVII, entry 74, it is mandatory for safety training to be completed before first use of polyisocyanate products containing free diisocyanates at concentrations of 0.1% or higher.
While our Ultra line products reduce diisocyanate exposure, appropriate workplace conditions and worker awareness of spray-specific hazards remain essential safety requirements.
Key benefits
Drop-in solution:
Easily replaces established formulations without additional admin or approvals
Enhanced industrial hygiene:
Residual monomer content below 0.1%
Proven performance:
Technical equivalence to established formulations
Future-proof:
Developed to address current EU regulations on diisocyanates as well as the EU‘s new Occupational Exposure Limits (OELs) for diisocyanates coming into effect in 2029.

Webinar: Staying ahead of OEL regulation
Discover insights on OEL developments and how our expanded Ultra portfolio meets that challenge.
Our Ultra line crosslinkers demonstrate that enhanced workplace safety and proven performance aren't mutually exclusive. This innovation allows manufacturers to upgrade their safety profile without compromising on technical excellence.
Dr. Robert Maleika
Head of Technical Product Management Crosslinkers Covestro
Seamless integration
Ultra line products offer full technical equivalence to established formulations while delivering improved safety. Manufacturers can easily implement these improvements without requiring new customer approvals or additional qualification processes.

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