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Adhesives Ingredients
The material selection platform
Adhesives Ingredients

Dry Rope Butyl / EVA Sealant

Adhesives Formulation

Applicable Type
Sealants
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 adhesives and 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 
xxxx 
?-Pinene terpine resin (115° mp) 
xxxx 
Ethylene vinyl acetate 
xxxx 
Low molecular weight polyethylene 
xxxx 
Antioxidant 
xxx 

Processing

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Resulting Properties

Butyl rubber sealants can be formulated as well as rope caulks and extruded tapes. These preformed butyl sealants are 100% solids so that there is no shrinkage on cure. Noncuring butyl sealants with no solvent have long life if used between building panels and in sound deadening applications. They do not harden or oxidize and are not affected by weather. Preformed butyl tapes are used extensively in the glazing industry between glass and aluminum. These tapes have 20-30% compression and a 10-year service life. They are permanently tacky and have a “self-healing” characteristic. A typical dry rope caulk formulation is shown above.

Tips and Tricks

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