Description
DMPA is a molecule that has both hydroxyl and carboxyl groups, unique and multi-functional resistance.
The free acid group can actively improve the water solubility or water dispersion properties of the resin after neutralizing the alkali. Introducing polar base
To improve the adhesion of coatings and the dyeing properties of synthetic fibers; Increase the alkali solubility of the coating. Can be applied to the water
The DMPA is a tasteless, free-flowing, white crystalline solid.
Type
Sodium salt of an amino functional sulfonic acid
Key features
-Broad pH stability
-Special chain extender
-Sodium salt of an amino functional sulfonic acid
-Widely used in water based polyurethane (WPU) dispersions
Typical properties
Hydroxyl content, wt %： >24
Neutralizing equivalence, g/eq： <141
Ashes of Na2O, wt %： <0.03
Impurities, wt %： <0.5
Water insolubles, PPM： <50
Chroma： <250
Typical properties table
|
character
|
value
|
|
Molecular weight
|
134.13
|
|
Acid value, mg KOH/g
|
410 -415
|
|
Melting point, ° C.
|
170-180
|
|
Flash point
|
220 ° C
|
|
Decomposition temperature
|
230 ° C
|
|
Solvent solubility, g / 100 g 25 ° C
|
|
|
Water
|
11
|
|
Acetone
|
2.3
|
|
Ethanol
|
Insoluble
|
Application
Soluble polyurethane system, water-soluble alkyd resin and polyester resin, epoxy ester coating, polyurethane elastomer, and Powder coating
Storage and handling
-Available in 200kg/drum or 25 kg/drum
-Store products in tightly closed original containers at 5-40℃
-Shelf life: 12 months from delivery date
-According to non-dangerous goods transport
