Explanatory notes
… at the time of use by heating (e.g., by melting) or by addition of a liquid (e.g., water). The products of this … resins, shellac, rubber, resin esters, etc., are often added to increase the adhesive effect. Mastics in which wax … resins, etc.), intermixed and usually with the addition of other materials (e.g., waxes, oils, bitumens, …
