LANXESS at World Adhesives and Sealants 2022 to showcase innovative solutions

Specialty chemicals company LANXESS will present its broad product line for designing reactive hot melt systems and share innovative innovations at the World Adhesives and Sealants Congress in Chicago, IL, USA, April 25-27, 2022.
New insights into low free (LF) monomer technology
.
Existing and new customers can find out what solutions LANXESS' low free (LF) monomer technology offers for developing adhesive and sealant products that meet specific requirements
.
The company will also present new insights into its innovative low free (LF) monomer technology
.
The World Adhesives and Sealants Congress is established as the leading international event for stakeholders of the global adhesives and sealants industry
.
It is held every four years, alternating between the United States, Europe and Asia
.

Ronald Emanuel Jr.
, Global Head of R&D for Adhesives at LANXESS Polyurethanes Portfolio Business Unit, will present "Further progress in the design of low-free isocyanate monomer prepolymers for reactive adhesive portfolios"
.
The latest research results in the field of low free isocyanate monomer prepolymers for reactive adhesive material combinations will be revealed here
.

Benefits to the environment, health and occupational safety

LANXESS has developed unique prepolymers with free MDI (methylene diphenyl diisocyanate) and other isocyanate content below 0.
1 wt.
% for hot melt adhesives in the automotive, construction, electronics and bookbinding industries, among others
.
This low free (LF) monomer technology offers outstanding technical performance, excellent processability and productivity, as well as environmental, health and safety advantages
.
These prepolymers are particularly suited to meet increasingly stringent regulatory requirements and provide a lower hazard classification for the final product
.

Removing the diisocyanate monomer presents challenges to the final adhesive formulation, such as different reactivities, required prepolymer amounts, and overall different adhesive properties
.

However, LANXESS' low free (LF) monomer prepolymer toolbox can overcome these challenges and enable the adjustment of prepolymer reactivity, viscosity and polyol to suit the needs of the formulator
.
By controlling the chemical structure, these prepolymers have a highly structured morphology, providing more stable processing
.

Adiprene Green LF - Bio-based prepolymer with excellent properties

Like many other industries, the adhesives industry is facing the challenge of developing a sustainable material portfolio that also has low health and safety risks
.
Under the brand name Adiprene Green LF, LANXESS offers a range of high-performance, bio-based, low-free diisocyanate monomer products for polyurethane adhesive applications
.
Bio-based LF MDI prepolymers focus on well-defined chemical building blocks to match the most challenging adhesive properties
.
By exploring additional chemistries and optimizing molecular weight and structure, bio-based LF prepolymers can be tailored to the specific needs of many different applications
.
Advances have been made in the development of bio-based LF MDI prepolymers with a wide range of NCO contents (free reactive isocyanate groups) that can generate viscosity in reactive hot melt and two-component adhesive formulations Lower system with higher crystallinity, better wettability and faster green strength
.
The biobased content of these LF MDI prepolymers can reach nearly 30%, resulting in hot melt adhesive formulations with a biobased content of 75%
.

LANXESS' bio-based prepolymers enable the company to reduce emissions while helping advance climate neutrality goals
.
This new bio-based technology offers superior performance, processing and productivity, and can reduce CO2 emissions by 20% to 30% compared to petroleum-based prepolymers
.