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Home > Production > By product groups > Aqueous dispersions and additives > Specialty dispersions > MKF-50 melamine-urea-formaldehyde resin

MKF-50, MKF-70 melamine-urea-formaldehyde resins

(TU U 24.1-13395997-017:2007)


   MKF-50 resin is a condensation product of melamine and urea with formaldehyde in alkaline medium stabilized with triethanolamine.

   MKF-70 resin is an aqueous solution of melamine-urea-formaldehyde resin esterified with methanol.

   MKF-50 and MKF-70 melamine-urea-formaldehyde resins are used in thermosetting compositions (in combination with self cross-linking dispersions) to impregnate various materials. Introduction of  melamine-urea-formaldehyde resins allows to control thermal resistance and rigidity of the film.


Specifications:

 

Properties

Standard

 

MKF-50

 MKF-70

Appearance

Liquid of light-yellow to greenish color, no solid impurities. Settling (1%max) is acceptable.

Homogeneous liquid colorless to light-yellow, no solid impurities.

Non-volatiles, wt.%

50±2

70±2

Viscosity by VZ-246 viscosimeter  (nozzle dia 4 mm) at (20,0±0,5)°С, s

11-15

 60-100

Hydrogen ion concentration, pH

7,9-9,5

8,0-9,0

Free formaldehyde, wt.%, max

3,5

2,0

Resin compatibility with water, cm3/cm3, min

white flakes and increased clouding should be observed

 Complete

 

Consumption rate of MKF-resins is determined empirically depending on the finished product requirements.


Safety measures:

 

   Packed products should be stored indoors away from heaters and open fire, at 0°С - 25°С for MKF-50 and at 15°С - 25°С for MKF-70.
Guaranteed storage life:
     MKF-50 : 4 months from the date of production;

     MKF-70 : 2 months from the date of production.

 

Packing:


   Products are packed in accordance with GOST 9980.3-86.

As agreed with the customer, packing in PE containers or other type packaging which ensure product quality and safety is allowed.


 
 
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