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Hot melt butyl
Product overview
Thermoplastic hot melt sealant suitable for sealing joints or fixation that do not bear mechanical forces. - Permanent plastic and permanent tacky - Good adhesion on almost all substrates - Aging and weather resistant - Good water and vapour resistance - Solvent free (no shrinkage)
Available sizes
Cleaning Remove main portions mechanically („dab off”). Residuals can be cleaned with Bostik Solvent 280 or white spirit.
Recommended Use Butyl 1143 is applied by using common drum unloaders (temperature and pressure). The exact processing conditions have to be adjust for each equipment individually and depend on the substrates and line speed too (Your equipment manufacturer will assist you). For Butyl 1143 an application temperature range from 120°C to 150°C is recommended. A longer temperature load above 160°C has to be avoided (Risk of carbonization and decomposition). Not recommended for thickness less than 1mm.
Stability From -30°C to 80°C temperature and form stable. Butyl 1143 behaves thermoplastic: At low temperature the hardness increases, at high temperatures the mass becomes softer and tackier. Good aging resistance, especially under warm and humid conditions. Stable against water and saltwater in the range of pH 5 - 9. Not resistant against oil, grease, white spirit and other solvents. Butyl 1143 must be protected against UV radiation.
Storage Store under dry conditions, protect against mechanical deformation. Product is not affected by frost. Shelf life at least 24 months.
Adhesive Technology HM BUTYL SEALANT – profiles
Colors grey
Adhesion Very good adhesion to a variety of different materials. In contact with plastic materials a migration of plasticizer may occur – we recommend to carry out tests before application! Surfaces must be dry and mostly clean, free of dust, oil or grease.
Chemical Base Synthetic rubber (IIR; PIB)
Density 1,40 – 1,50 g/ml Pycnometer; 23°C (similar to DIN EN ISO 2811-1
Melt Index 90 – 120 ml/10 min 140°C;2,16 kg; 2 mm nozzle (similar to DIN EN ISO 1133-1)
Surface Track 4 - high 5 - excellent 4 - high 3 - good 2 - low 1 - minimal
Smart Advantages

- Good processability

- Very good surface tack

- Highly economical


- Suitable for interior and exterior applications

- Sealing of lap joints

- Bonding and fixation of light-weight materials

- Temporary fixation

- Corrosion protection in metal/dissimilar joints