Energy savings plus mechanical reinforcement and rheology control

2K Butyl Insulating Glass Sealant (Curative)

Adhesives Formulation

Applicable Type

Reactive Adhesives

Applicable Base Polymer

Butyl Rubbers (IIR)

Applicable Industrial Sectors

Buildings & constructions

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.

Typical Formulation Ingredients

Ingredient

Parts by weight

Butyl rubber (Kalene 800, Royal Adhesives)

Lead oxide

Filler (Cab-o-sil M5, Cabot Corporation)

Toluene

Typical Properties

Properties

Mix ratio (A:B) by weight

xxxxxx

Cure time at 25°C, hrs

xxxxx

Tensile strength, MPa

xxxx

Elongation, %

xxx

Hardness, Shore A

Processing

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Resulting Properties

A typical butyl rubber insulating glass sealant compound is 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.