Energy savings plus mechanical reinforcement and rheology control

Butyl Tape for Insulating Windows

Adhesives Formulation

Applicable Type

Sealants

Applicable Industrial Sectors

Buildings & constructions , Tapes

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

Phase

Ingredient

Parts by weight

Crosslinked butyl rubber (Kalene 5215, Royal Adhesives)

xxx

Carbon black (ASTM N539)

EVA copolymer (Ultrathene EVA, Equistar Chemicals)

Calcium carbonate (Camel Carb, H.M. Royal)

Polyisobutylene (Vistanex LMMS, Exxon)

Antioxidant (Irganox 1010, Ciba)

xxx

Typical Properties

Properties

Compression, psi

• At 20°C

xxx

• At 121°C

xxx

Elongation, %

xxx

Yield strength, psi, (applied to substrate @270°F)

Processing

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Resulting Properties

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.