LANXESS: Low free prepolymers target EU diisocyanate restriction

Low Free (LF) technology can be used to produce polyurethane (PU) prepolymers with a free isocyanate monomer content of less than 1% by weig.

In May 2018, the European Chemicals Agency (ECHA) submitted a submission on a plan for the diisocyanate restriction procedu.

complex authentication

The above-mentioned restriction procedures stipulate binding and verifiable technical measures aimed at improving safety and occupational heal.

The new limit will not affect all PU technologi.

Find alternative materials

The aforementioned restrictions are not expected to be implemented until after a transition period of four to six years, so that the PU industry, led by the likes of ISOPA (European Association of Diisocyanate and Polyol Producers) and ALIPA (European Association of Aliphatic Isocyanate Producers), can develop solutions that meet the requiremen.

Purification step reduces free diisocyanate content in prepolymer

Adiprene low-free prepolymers from LANXESS are a very suitable alternative material that minimizes exposure to free isocyanates and thus avoids the impact of the new restriction regulatio.

Adjusting Phase Separation and Viscosity

Adiprene low free prepolymers offer advantages in health, environmental protection, industrial hygiene and safe.

In addition to this, the low viscosity of the Adiprene low free prepolymer makes it possible to add chemical functionality to its polymer backbo.

Broad portfolio of low free prepolymers

The LANXESS Polyurethane Systems business unit is in the process of customizing PU systems and specific applicatio.

Over 60 years of experience in the development and customization of PU syste.

CAS applications particularly benefit

With Adiprene low free prepolymers there is an opportunity to be unaffected by the new restrictions, which can significantly relieve the pressure on producers and users in the coatings, adhesives and sealants industry (CA.

Next Generation Low Emission LFMDI Prepolymers

The LANXESS Polyurethane Systems business unit positions itself as a solutions provider combining technological and regulatory trends with the development of customized PU systems and related raw materia.

Diisocyanate Use Certification Training Requirements

Photo credit: LANXESS Chemicals

Compared to comparable conventional prepolymers, polyurethane products produced with low free prepolymers have more complete phase separation between hard and soft segments, a narrower molecular weight distribution, and a higher degree of crosslinking, resulting in The final product has better properti.

The pilot plant in Latina, Italy, is part of LANXESS' global Adiprene® LF-MDIPU system production netwo.

Photo credit: LANXESS Chemicals