Product Overview
LOCTITE 4850 is a 1-component cyanoacrylate instant adhesive (ethyl/butyl) designed for bonding paper, leather, and textiles. The product is colorless and has a medium viscosity; the curing process is initiated by atmospheric moisture. LOCTITE 4850 is formulated to provide flexible, pliable bond properties and is particularly suitable for porous or absorbent substrates.What it Does and How to Use It
As a one-component cyanoacrylate, the product bonds quickly upon contact with moisture in the air. It is suitable for joining materials where flexible bonds are required and can be used for both porous substrates and a range of non-porous materials according to the manufacturer's data. The product is recommended for use in thin bond lines for fast curing; larger gaps may delay curing, and the use of an accelerator can increase curing speed but may also affect final strength. Key points for practical use:- Apply to clean, grease-free surfaces for best performance.
- Preferred bond lines are small; the product indicates optimal performance in thin bond lines (e.g., 0.05 mm).
- Excess adhesive can be removed with Loctite cleaning agents, nitromethane, or acetone.
Typical Applications
The manufacturer states that LOCTITE 4850 is specially formulated for bonding porous or absorbent materials such as paper, leather, and textiles. The datasheet also describes its use on a range of other materials, including metals, plastics, and elastomers, where fast-bonding, flexible joint properties are required. Technical documentation: View manufacturer's datasheetSpecifications
- Chemical type: Ethyl / butyl cyanoacrylate
- Appearance (uncured): Clear, colorless liquid
- Components: One part (no mixing required)
- Viscosity (cone & plate, 25 °C): 250–500 mPa·s
- Curing: Moisture-related (atmospheric humidity)
- Fixture time: 3.0–10.0 seconds
- Gap fill (stated): 0.15 mm
- Key substrates: Leather, textile, and paper
- Recommended storage (unopened): 2 °C to 8 °C
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