LOCTITE 4307

Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg

LOCTITE 4307 LOCTITE 4307 LOCTITE 4307

Main features

  • Rapid UV Surface Cure
  • Humidity Secondary Cure
  • Fluorescent Application Inspection

Product Description

LOCTITE 4307 is a one-part ethyl cyanoacrylate adhesive with UV and visible-light cure plus secondary humidity cure for plastics, rubbers, and metals. The fluorescent liquid supports application inspection, while exposed fillets and surfaces can reach a tack-free state in seconds under the specified light conditions. Humidity cure supports bonded interfaces outside direct light. A viscosity of 600 to 1,200 mPa s supports controlled placement, and non-UV fixture times range from 5 to 20 seconds on several tested substrates. It is suited to rapid assembly where fast fixturing and controlled exposed-surface cure are required.

Key features

  • Rapid light-cured surfaces: Exposed fillets and surfaces reach tack-free cure in 5 seconds or less with documented UV light sources.
  • Secondary humidity cure: Atmospheric moisture supports cure in bonded areas that do not receive direct light.
  • Fluorescent application inspection: Positive UV fluorescence helps operators identify applied adhesive during assembly.

Applications / Suitable for

  • Rapid bonding of plastics, rubbers, and metals
  • UV or visible-light curing of exposed fillets and surfaces
  • Disposable medical-device assembly within documented evaluation scope
Product Family

LOCTITE 4307

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Chemistry Type
Ethyl cyanoacrylate with photoinitiator
Color
The color
Transparent, light yellow-green to dark blue-green liquid
Component System
Describes the number of components that must be supplied, mixed, or activated before application or cure.
One component
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.06
Thermal Properties
Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding. The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
114 °C
Physical Properties
Tack-Free Time
≤5 seconds minutes
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
600 to 1,200 mPa.s
Chemical Properties
Water Absorption
2.6 %
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
2.2 %
Physical Properties
Depth of Cure
4 mm
Curing Conditions
Fixture Time
5 to 10 seconds

Additional Information

Technical properties

As-supplied / before-processing properties

Typical values for the product before cure, application, or assembly.

PropertyValueUnitMethod / condition
AppearanceLight yellow-green to dark blue-green liquid-As supplied
FluorescencePositive under UV light-As supplied
Chemical typeEthyl cyanoacrylate with photoinitiator-As supplied
ComponentsOne part-No mixing required
Specific gravity1.06-25 deg C
Viscosity600 to 1,200mPa sCone and plate, 25 deg C, shear rate 100 s^-1
Cure mechanismsUV / visible light; secondary humidity-Primary exposed-surface cure plus atmospheric-moisture cure
Technical properties

After-processing / final-state properties

Typical values for the cured or installed product under the listed conditions.

PropertyValueUnitMethod / condition
Tack-free time<=5sZeta 7400, 30 mW/cm^2 measured at 365 nm
Fixture time, ABS5 to 10sNon-UV cure, 22 deg C, 50% RH
Fixture time, grit-blasted steel10 to 20sNon-UV cure, 22 deg C, 50% RH
Glass transition temperature114deg CASTM E 228; cured 100 mW/cm^2 at 365 nm for 30 s per side
Shore hardness82Shore DISO 868; cured 100 mW/cm^2 at 365 nm for 30 s per side
Tensile strength33.4N/mm^2ISO 527-3; cured 100 mW/cm^2 at 365 nm for 30 s per side
Block shear, polycarbonate>=9.0N/mm^2ISO 13445; cured 30 mW/cm^2 at 365 nm for 10 s

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