Paraloid B-72 or B-72 is a thermoplastic resin that was created by Rohm and Haas for use as a surface coating and as a vehicle for flexographic ink.

[5] One of the major advantages of B-72 as a consolidant is that it is stronger and harder than polyvinyl acetate without being extremely brittle.

The major drawbacks to using B-72 are related to its handling properties: as in the case of other acrylic resins it is difficult to apply as an adhesive and to manipulate with precision.

However, solvent mixtures with various proportions of acetone, ethanol, and toluene are frequently used to alter the working time of the resin and to produce slightly different properties (hardness and flexibility, e.g.) in the set resin.

Research shows that the silica better distributes the stress and strain that occurs during evaporation of a solvent and during the setting of the adhesive film.