The Universal Selection Source: Adhesives Ingredients

Formulation

Polyvinyl Butyral Hot Melt Adhesive for Bonding Waxed Paper by Eastman

Applicable Type
Applicable Industrial Sectors

Typical Formulation Ingredients

Phase
Ingredient
Parts by weight
Polyvinyl butyral resin (Butvar B-76, Eastman Chemical) 
   
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    Plasticizer (Santicizer B-160, Eastman Chemical Company) 
       
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    Wax (Castowax additive, NL Industries Inc.) 
       
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    Armid HT amide (AkzoNobel) 
       
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    Synthetic wax (Acrawax C synthetic wax, Lonza) 
       
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    Tackifier (Poly-Pale Ester 1 thermoplastic rosin resin, Eastman Chemical) 
       
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    Tackifier (Staybelite Ester 10 rosin resin, Eastman Chemical) 
       
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    Typical Properties

    Properties
    Brookfield viscosity @ 150°C, cps 
       
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    Appearance 
       
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    Low tack 
       
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    Improved oil and grease resistance 
       
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    Quick setting 
       
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    Overall lower cost 
       
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  • Applicable Base Polymer Properties

    Polyvinyl acetal adhesives generally are formulated from either polyvinyl butyral or polyvinyl formal resins. The polyvinyl butyral is much more soluble and has a lower melt viscosity. It is a more flexible polymer and provides better peel strength. Polyvinyl butyral adhesives are supplied as hot melt adhesives or as solvent solutions of high viscosity and low solids content. These adhesives are water white and transparent, light stable, and have excellent adhesion to glass. Polyvinyl butyral is commonly used in laminating safety glass.

    Resulting Properties

    Polyvinyl butyral provides an excellent base polymer for hot melt adhesives. Adhesion is good to all substrates including low energy plastics.

    (Source: Eastman Chemical Company)

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