AMP-95 Aminomethyl Propanol pH Adjuster

Aminomethyl Propanol, AMP-95 Aminomethyl Propanol, Dow Aminomethyl Propanol, pH Adjuster, Coating Additive

Angus AMP-95 Aminomethyl Propanol pH Adjuster Multifunctional AdditiveCoating Additive

Product Information

Name: Aminomethyl Propanol AMP-95

Brand: Angus ANGUS (formerly Dow Chemical USA)

Origin: USA

Appearance: Colorless transparent liquid

Content: 95%

Specification: 190.51 kg/drum

Characteristics: pH adjustment for metalworking fluids, latex paint, and coating additives.

Chemical Structure and Basic Properties

AMP-95™ is an aqueous solution containing 95% aminomethyl propanol (2-amino-2-methyl-1-propanol). It is an organic base with the chemical formula C4H11NO.

Appearance is a colorless transparent liquid with an ammonia odor. Molecular weight 89.14. Relative density 0.942. Freezing point -2°C. Viscosity (25°C) 147 mPa·s, flash point (closed cup) 83°C. pH (0.9% AMP-95 aqueous solution) 11.3. Active ingredient 95%. Flammable. Non-toxic. It is miscible with water in any proportion and also soluble in many organic solvents such as ethanol.

Applications in Coatings

pH Adjuster: In water-based coatings, AMP-95™ is a highly effective pH adjuster. It can maintain the pH of the coating within a relatively stable alkaline range (typically between 7.5 - 10). This is crucial for the stability of the coating, as an appropriate pH can prevent phenomena such as coagulation and flocculation of polymer emulsions in the coating, thereby extending the storage life of the coating. For example, in acrylic emulsion coatings, adding AMP-95™ can stabilize the surface charge of emulsion particles, preventing them from aggregating due to charge neutralization.

Pigment Dispersant: AMP-95™ can improve the dispersion of pigments in coatings. It adsorbs onto the surface of pigments, causing pigment particles to repel each other through electrostatic repulsion and steric hindrance, resulting in a more uniform dispersion within the coating system. This helps enhance the color uniformity, hiding power, and gloss of the coating. For instance, in coating formulations containing pigments like TiO₂, AMP-95™ can aid in better dispersion of TiO₂, improving the whiteness and hiding power of the coating.

Enhancing Coating Adhesion: In some coating systems, AMP-95™ can promote adhesion between the coating and the substrate. It can undergo chemical reactions with certain functional groups on the substrate surface or improve the wettability of the coating on the substrate, allowing the coating to adhere better to the coated object. For example, when applying coatings to metal substrates, AMP-95™ can interact chemically with oxides on the metal surface, enhancing the bond between the coating and the metal.

Applications in Other Fields

Personal Care Products: In certain personal care products such as skincare items and shampoos, AMP-95™ can serve as a pH adjuster. It can adjust the product's pH to match the physiological pH range of skin and hair, reducing irritation. For example, in some gentle facial cleansers, AMP-95™ can adjust the pH to near that of the skin (around 5.5), allowing the product to clean without disrupting the skin's acid mantle.

Water Treatment: In water treatment processes, AMP-95™ can act as an alkalinity adjuster to regulate the pH and alkalinity of water. It can also form complexes with metal ions in water, reducing their concentration and preventing scaling in pipes and equipment. For instance, in industrial recirculating cooling water systems, AMP-95™ can help control water pH and hardness, extending equipment service life.