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Product key points

The structural, processing and applicative properties of Lotryl® allow a wide range of use.

Structural properties

Two types of comonomer: methyl acrylate (Lotryl® MA resins) and butyl acrylate (Lotryl® BA resins).

Comonomer content: 17% to 35% by weight.

Melt flow index: 0.5 to 320 g/10mn (190°C - 2,16 kg)

 

The main properties of Lotryl® copolymers depends on molecular weight and acrylate content.

Increase acrylate content increases

And reduces
  • Adhesion
  • Solubility
  • Toughness
  • Compatibility with polar products
  • Filler acceptance
  • Flexibility
  • Cristallinity
  • Melting point
  • Softening point
  • Rigidity
  • Hardness

The statistic introduction of acrylic esters into the polyethylene chains modifies the basic characteristics.

 

Crystallinity: The Lotryl® range goes from semi-crystalline products (grades with 17% of comonomer) to completely amorphous elastomers (grades up to 35%). There is no crystallinity difference between EMA and EBA copolymers.

 

Polarity: Increasing with the comonomer content, this characteristic is important when Lotryl® resins are formulated with low molecular weight products such as bitumen or hot melt formulations.

Applicative properties

Lotryl® copolymers main characteristics... ...Make them suitable for:
Easy to process and thermally stable -> Extrusion coated structures, extrusion lamination
Flexibility -> Films (sanitary applications), food packaging
Sealability -> Sealable layer for food packaging
Softness -> Impact modification of engineering plastics
Adhesion -> Hot melt adhesives
Filler acceptance -> Cable compounds, masterbatches
Low temperature properties -> Hot melt adhesives for deep-freeze packaging

Compatibility

Lotryl® is a polar copolymer. The polarity allows a good compatibility with other polymers and a large range of raw materials for hot melt adhesives such as tackifiers, waxes and plasticizers.