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LRBG Chemicals USA MF 829

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Supplier:  LRBG Chemicals
Polymer Name: Melamine Formaldehyde (MF)
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TypeDocument Name
Technical Data Sheet
LRBG Chemicals USA MF 829 Technical Data Sheet
LRBG Chemicals USA MF 829 Technical Data Sheet
Technical Data Sheet
Safety Data Sheet
LRBG Chemicals USA MF 829 Safety Data Sheet
LRBG Chemicals USA MF 829 Safety Data Sheet
Safety Data Sheet

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Identification & Functionality

LRBG Chemicals USA MF 829 Features & Benefits

Materials Features

Applications & Uses

Processing Information

MF829 is specifically designed for industrial applications such as NEMA G-9 grade glass fabric laminates. Typical laminate properties are listed on the next page. MF829 has been developed to provide a melamine laminating resin with excellent solution stability at high concentrations of resin solids. This lends itself to treating applications requiring solutions solids of over 60% in order to obtain resin pick-up in the range of 40% in one pass. Based upon field experience with fabrics having an sI516 and 616 finishes, the following recommendations are offered as a guide.

  • Treating solution: Optimum resin pick-up and wetting of glass fabric may be obtained with a 66% solids solution by weight of 829 in a solvent system of about 93/7 water/butanol. MF829 is readily solvated in a mixture of tepid water and butanol with 20 - 30 minutes vigorous agitation. Equipment clean up is facilitated by using a solution of approximately one gallon butanol to ten gallons tepid water. Following a wash down with this mixture, a tepid water flush should complete the clean-up.
  • Treating specifications: A resin content in the range of 39 - 42% with a volatile content of 1.3 - 1.8% (ten minutes at 160°C) is recommended. Flow values obtained on 8 ply of 4” X 4” squares pressed at 300°F and 1,000psi for 5 minutes should fall in the range of 8 - 12%.
  • Cure conditions: The cure cycle will be governed by the laminate thickness. For laminates of 1/16” and 1/8” thickness, a cure time of 15 - 18 minutes at 320°F and 1,000-2,0000 psi is recommended. For laminates of ½” thickness, a cure of 18-20 minutes at 310°-315°F and 1,000-2,0000 psi is recommended. Temperatures recommended are laminated temperatures.


Physical Form
White free flowing powder
Typical Properties
ValueUnitsTest Method / Conditions
Particle Size (Retained on 40 Mesh)Trace%BTM-610B
Water Titer5 - 11mlTM-633
Dilutability24 - 33%TM-633
pH9.0 - 9.9-TM-600
Laminate properties
ValueUnitsTest Method / Conditions
Flexural (Cond. A, MD)75000.0psi-
Flexural (Cond. A, CD)59000.0psi-
Impact (MD)19.0ft. lbs./ in.-
Impact (CD)15.0ft. lbs./ in.-
Bond Strength (1/2”)2000.0lbs.-
Water Absorption0.22%-
Dielectric Breakdown65.0KVD336/50
Dielectric Constant6.3-D48/50
Powder Factor0.018--
Volume Resistivity5 x 10⁶MΩ.cmC96/35/90
Surface Resistance1 x 10⁶MegohmsC96/35/90
Arc Resistance (D48/50)184.0sec-

Regulatory & Compliance

Quality Standards

Packaging & Availability

Packaging Type
Standard Packaging

The standard package for MF829 is a multi-wall paper bag having a net content of 50 lbs. or packaged in a large tote bags at 500 lbs.

Storage & Handling

Storage Conditions

MF829 is a stable material which is not inclined to change provided it is stored in closed containers in a cool, dry area. Avoid direct contact with concrete floors and walls. Optimum storage conditions are below 75°F and 60% relative humidity.

LRBG Chemicals USA MF 829
LRBG Chemicals