Flexibility of Phenol Formaldehyde Resins is increased by incorporating 20 to 50% Technical Protein Colloids. Toughness of phenolic film is greatly increased, i.e., its resistance to shock and shatter that would cause a normal phenolic resin to craze. Specific adhesion. Technical Protein Colloids have excellent specific adhesion to a wide variety of surfaces, among these being cellulose, glass, and other similar type materials. When phenolic resins start into their cure, they go through an extremely fluid stage. If the phenolic resin is not held in the position required, it tends to drain to one side or the other. If Technical Protein Colloids are used along with the phenolic
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