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7. Polychloroprene contact adhesives
These are usually solvent-based adhesives based on polychloroprene rubber, the best-known of which is Neoprene from Du Pont.
Their formulation includes :
a suitably selected neoprene rubber;
a resin that provides tack, adhesion on difficult-to-bond substrates and heat resistance (which varies from 70 to 120°C depending on the formula);
ZnO and MgO (which react with rubber and resin);
all dissolved in a solvent mixture generally based on esters (ethyl acetate), ketones and aliphatic hydrocarbons.
Polychloroprene (or neoprene) adhesives are known as "contact adhesives" because of the way they are used: the adhesive is applied to the two materials to be bonded, at between 100 and 150...
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Polychloroprene contact adhesives