Energy savings plus mechanical reinforcement and rheology control

Solvent Borne High Quality Polybutene / Butyl / Phenolic Caulking Compound

Adhesives Formulation

Applicable Type

Solvent borne Adhesives

Applicable Base Polymer

Polyisobutylenes (PIB)

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

Phase

Ingredient

Parts by weight

Butyl rubber 50% in mineral spirits (Butyl Rubber 065, Exxon Mobile)

xxx

Isobutene polymer (Vistanex LM-MS, Exxon Mobile)

Isostearic acid

Talc

xxx

Atomic calcium carbonate

xxx

Titanium dioxide (Rutile)

Tackifier, terpene phenolic resin (SP-553, SI Group)

Isobutene polymer (Indopol H-300, Lipo Chemicals)

xxx

Oil (Brown Soybean Oil 680 Medium, Cargil)

Cobalt naphthenate (6% cobalt)

xxx

Fumed silica (Cab-O-Sil, Cabot Corporation)

Mineral spirits

Typical Properties

Properties

Excellent aging and adhesive properties

High grade formula

Permanently flexible

Tacky

Soft, gunnable, easily workable

Very low moisture vapor transmission properties

Processing

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Resulting Properties

A typical butyl rubber sealing compound has the composition 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. The source of 'Solvent Borne High Quality Polybutene / Butyl / Phenolic Caulking Compound' formulation' is Adhesives Formulary Handbook, NIIR Board, Asia Pacific Business Press, Inc., 2010, p. 62.

Tips and Tricks

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