Deuteron® MM 684 is a matting agent formulated by combining organic duromeric PMU powder (polymethyl urea) with inorganic materials. It's specifically designed for use as a matting agent in coil coating systems and pigmented systems. Notably, it's wax-free and suitable for application in both aqueous and solvent-based DIY lacquers.

Chemical Family: Polymethyl Urea

Functions: Flattener

End Uses: Lacquers, Solventborne Coating, Waterborne Coating

Labeling Claims: Biodegradable, Wax-free

Features: Blocking Resistance, Chemical Resistance, Excellent Scratch Resistance, Improved Mechanical Resistance, Matting, Polishing Resistance

Technical Data Sheet

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Identification & Functionality

Chemical Family
CASE Ingredients Functions

Features & Benefits

Labeling Claims

Applications & Uses

Use Level
1 - 8 %
Application and Dosage Information

Deuteron® MM matting agents can be used in almost all coating applications ranging from water borne and solvent borne to 100% systems. They can be used as stand-alone additives or in combination with other ma- terials to further improve their properties.

Deuteron®® MM 684 especially improves the following properties:

  • Good matting effect due to the synergy effects
  • Very low influence on viscosity even at high application rates
  • High mechanical and chemical resistance
  • High scratch resistance and resistance to polishing
  • Temperature resistant up to over 200°C, short- time up to over 300°C
  • Pleasant touch felling
  • Improved blocking resistance
  • Insoluble in solvents commonly used in paints
  • Polymer content biodegradable


  • Typical addition range: 1%–8%
  • The required dosage level highly depends on the system (e.g. binder type, additives, solvent content) and ap- plication parameters such as layer thickness and film shrinkage. Thus, it is highly recommended to determine the needed addition level by a practical ladder study.


  • The PMU chemistry in general is highly compatible in a wide range of systems. Due to that Deuteron® MM matting agents can be incorporated easily by a high-speed stirrer without the need for specific wetting agents or dispersing aids. They are shear stable in high shear pro- cesses but should not be ground in a bead mill.


Physical Form
Fine white powder
Typical Properties
ValueUnitsTest Method / Conditions
Densityapprox. 1.8g/cm³-
Particle Size (dv 50)approx. 6.0μm-
Particle Size (dv 90)approx. 13.3μm-
ValueUnitsTest Method / Conditions
Oil Absorption (Palatinol N)approx. 206g/100gDIN ISO 787/5

Packaging & Availability

Packaging Type
Regional Availability
  • Canada
  • Mexico
  • USA
Packaging Information
  • Paper bag (10 kg net)

Storage & Handling

Shelf Life
24 months
Storage and Shelf Life Conditions
  • 24 months at room temperature and dry conditions.
  • Storage temperature should not exceed 35°C.