Thickener DP-225 is a synthetic thickener containing 2-Acrylamido-2-methyl-propane sulfonic acid sodium salt (AMPS) copolymers dispersed in a paraffin solvent and is developed for water based polymer products and polar organic solvents such as ethylene glycol, propylene glycol and glycerol. This product provides remarkable thickening power between pH 2 and pH 12, very good mechanical stability and electrolyte resistance. It is especially suitable for product systems which poly-acrylic acid thickeners are not capable for the application requirements. The product can be used directly and does not require the addition of ammonia or other alkali to the system.

Thickener DP-225 has the following benefits:

1. Extremely easy to use and highly efficient
2. High electrolyte resistance
3. Good thickener for polar solvents
4. Excellent workability
5. Effective over a wide pH range

Typical Physical Properties

1. Appearance: Creamy liquid
2. Solids: 46.0 ± 1.0%
3. pH: 8.0 ± 1.0
4. Specific gravity: 1.22
5. Viscosity: 30,000 ± 10,000 (Brookfield, RVT, #6, 5 rpm)

Method of Use and Example
Water or solvent is added to the pre-weighed DP-225 with gentle agitation to prepare a thickener stock. The results of two examples are shown in the following table:

Solvent	D.I. Water	Propylene Glycol
DP-225 (w/w %)	3.0	3.0
Solvent (w/w %)	97.0	97.0
Viscosity (Brookfield, RVT,#6,5rpm)	60,000 cps	80,000 cps

*This example is for reference. The formulation should be adjusted to the product requirement.