REXPEARL™ ET

Ethylene copolymer copolymerized with methyl acrylate, which enhances flexibility, and maleic anhydride, which imparts reactivity.
The compatibility and reactivity of the two comonomers improve the performance of various materials.

Adhesive

• It can be bonded to various adherends by various lamination methods such as thermocompression bonding, co-extrusion, and lamination.

Adherend	Thickness of adherend μm	bonding temperature ℃	Peelstrength N/15mm
RigidPVC	160	140	8.8
SoftPVC	100	140	3.1
PA6	15	140	5.8
HIPS	1100	140	5.6
PET	12	140	4.9
Glass	2000	180	7.8

Adhesive strength measurement conditions
Prepared samples for adhesion strength measurement of substrate (12 µm)/Rexpar ET (25 µm)
Bonding method: Thermo-compression bonding Pressure: 0.2 MPa Bonding time: 1 s
Peeling test condition: 180° peeling test Peeling speed: 300mm/sec

For Reactive Processing

REXPEARL™ ET has maleic anhydride in its structure, which can be changed into another functional group during reactive processing. By chemically reacting maleic anhydride with a compound that has a highly reactive functional group, such as an amino group, another functional group can be introduced.

Compatible

• By adding REXPEARL™ ET when blending polyethylene and different materials, you can increase its compatibility. It is more effective if the material is reactive to maleic anhydride.
• Blending dissimilar materials often results in giving negative impacts on transparency and impact resistance, but the use of compatibilizers in combination can reduce these damages.
• Adapting this to material recycling of multi-material items including polyethylene, you can improve the performance of recycled materials.

Dispersible

• By adding REXPEARL™ ET when blending fillers to your polyethylene, you can enhance its dispersion.
• Maleic anhydride prevents filler from falling out of the polyethylene matrix, thereby suppressing the reduction of physical properties such as impact resistance that occurs by the addition of the filler.
• It can be used as a dispersing material for various materials such as organic and inorganic fillers that can interact with maleic anhydride.

Soluble to Solvents

• REXPEARL™ ET can be dissolved various solvents such as toluene and xylene.
• The higher the comonomer content is, the higher the solubility becomes, and depending on the combination with the solvent, it can maintain its soluble state even at room temperature.

Flexible

• Copolymerization of ethylene and methyl acrylate increases flexibility.
• For more flexible grades, a grade which its Durometer A hardness is "52" is now under development.