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UL39

UL39

Detailed description

Borden UL39

UL39 is an all purpose urea formaldehyde adhesive used for paper foil laminating, furniture manufacture, door assembly, veneering, bonding melamine laminates, etc in both hot & cold curing conditions. UL39 has particularly good wash down properties, and is capable of performance in excess of the requirements of BEN301 Type II, BS1203 MR & BS 1204 MR when used with the appropriate hardener,

Hardeners

Urea formaldehyde resins are cured by the addition of hardeners. UL39 is a low viscosity & easily mixed with one of a range of powder hardeners. As well as the conventional powder hardeners, UL39 can be used with various special types of flexible, liquid & separate application hardeners. The type & quantity of hardener should be carefully selected according to pot life & pressing time required. Further advice is available from our Technical Department  on 01992 899 025.

Cold Press Hardeners:

  • UH21 Fast
  • UH191 Variable

Hot Press Hardeners:

  • UH191 Variable
  • UH583
  • UH28
  • UXE77
  • UXE13

Liquid Hardeners:

  • 1298 Flexible
  • UXO104
  • UXO83

 

 

 

Related links

Technical specification

Typical Properties

  • Appearance - translucent white syrup.
  • Solid content - 66.6%
  • Viscosity @ 25C  is 30 Poise
  • pH value of 8
  • dilute with water.
  • storage life @ 20C is around 4 months.
  • Wash down with warm water.

Terms

Pot LIfe - as soon as the hardener is mixed with the resin, it starts to cure. The time elapsing after which the mixture is too cured to be usable is termed it's pot life. This is affected by the mix ratio & ambient temperature.

Spreader Life - if the mixture is applied by mechancial spreader, the life in the spreader is normally some two-thirds to three-quarters shorter than the static pot life. This is due to frictional heat & evaporation of water from the adhesive.

Combined Hardener/Filler - it may be more convenient, and less prone to human error, to use one of the range of
combined filler/hardener grades. Helps minimise mixing errors.

Fillers & Extenders - UL39 used with the a range of hardeners, will tolerate a high level of Extender 99 without impairing the strength of the bond. It is strongly recommended that they are mixed using a mechanical mixer.

Suited for

  • Laminating
  • Veneering
  • Air Press Use