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Adhesives Ingredients
The material selection platform
Adhesives Ingredients

Hot Melt Butyl / SEBS Adhesives (B) by Eastman

Adhesives Formulation

Applicable Type
Applicable Base Polymer
Applicable Industrial Sectors

Applicable Base Polymer Properties

Butyl rubber is an elastomeric polymer that is used in a wide variety of construction sealants. Because of its unique properties it also is used in the automotive and food processing industries among others. Butyl sealants can be applied in a number of different forms. It is used widely as a hot melt, solvent solution, preformed tape or gasket, and as a gun-dispensable sealant. Butyl rubber can be used as a primary base resin or as an additive for tack and other desired properties. The Kalar butyl is a partially cross-linked butyl rubber compound.

Typical Formulation Ingredients

Phase
Ingredient
Parts by weight
SEBS (Kraton G1652, Kraton) 
xx 
Butyl rubber (Kalar 5214, Royal Adhesives & Sealants) 
xx 
Tackifier (Eastotac H-130E resin, Eastman) 
xx 
Calcium carbonate (Omyacarb 3, Omya) 
xxxx 
Titanium dioxide (Tri-Pure R10, DuPont) 
x 
Zinc oxide 
x 
Polybutene (Indopol H-300, Lipo Chemicals) 
xx 
Antioxidant (Irganox 1010, Ciba-Geigy) 
xxx 

Typical Properties

Properties
Needle penetration, dm/m 
xx 
180┬░ Peel strength, pli 
xx 
Failure mode in peel when bonded to aluminum 
xxxxxxxx 

Processing

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Resulting Properties

A typical butyl rubber sealing compound has the composition as shown above. Butyl sealants are known for excellent adhesion to most substrates. However, they can stain adjacent surfaces and have relatively poor recovery from extension. The polymeric compositions along with the other additives will affect both the application and the ultimate performance properties of the joint. Typically butyl sealants with this formulation have the following characteristics:

  • Conformance to Federal Specification TT-S-001657
  • Good tack free time
  • Excellent adhesion to many common substrates
  • Excellent weathering
  • Low permeability to moisture and gases

The source of Hot Melt Butyl / SEBS Adhesives (B) is Eastman.

Tips and Tricks

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