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Product description:
LOCTITE SF 770 is used to make polyolefin and other low energy surfaces suitable for bonding with Loctite cyanoacrylateadhesives. On such treated surfaces the cured performance of LOCTITE cyanoacrylate adhesives is generally similar to thatdescribed in the TDS for the relevant adhesive. It is only recommended for difficult to bond substrates which includepolyethylene, polypropylene, polytetrafluoroethylene (PTFE) and thermoplastic rubber materials. LOCTITE SF 770 Polyolefin Primer is not recommended in assemblies where high peel strength is required. Further information on the product can be obtained from the local technical department:

Directions for use:
Primer may be applied by spraying, brushing or dipping at ambient temperature. Excess primer should be avoided. Presence of primer may be detected by means of a UV inspection lamp (365 nm). If polyolefin and more active or easier to bond materials are involved, apply the primer to the polyolefin only.

Store product in the unopened container in a dry location. Storage information may be indicated on the product container labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during use. Do not return product to the original container.
Henkel Corporation cannot assume responsibility for product which has been contaminated or stored under conditions other than those previously indicated.

  • Chemical type: solution of an aliphatic amine in a solvent
  • Appearance : colorless
  • Specific gravity at 25°C : 0.68
  • Viscosity at 20°C, mPa*s : 1.25
  • Flash point (COC), °C : -1
  • Solvent : heptane
  • Dry time at 20°C, sec : 30
  • Shelf time, hours: 8
  • Fluorescent under UV light (Low 365 nm): yes

Full technical information can be found in the technical data sheet