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Contact adhesives are not tacky by themselves, but develop a strong and instant bond when two surfaces coated with the same adhesive are brought into contact with each other. They are almost universally based on polychloroprene rubber. Since the base rubber is available in either 100% solid or latex form, contact adhesives can be formulated either as solventborne or waterborne systems.
The tackifiers used in contact adhesives must be compatible with polychloroprene rubber which limits the selection to aromatic hydrocarbon and rosin resins. Tacolyn 1100 and 5003 resin dispersions are most commonly chosen when formulating waterborne contact adhesives.
To learn more about compatibility between elastomers and tackifiers visit Eastman’s Tackifier Center to understand which classes of tackifiers should be considered.
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Physical properties comparison |
| Product Group |
Product Brands |
Benefits |
Compare |
| Hydrocarbon Resin |
Picco |
Recommended when excellent acid and moisture resistance combined with outstanding pigment wetting is vital |
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| Hydrogenated Hydrocarbon Resin |
Eastotac |
Suggested for applications where excellent color stability and low odor are critical |
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| Pure Monomer Resin |
Kristalex |
Made from pure monomers so they are water-white in color and extremely stable against thermal and oxidative degradation |
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| Piccotex |
Suitable for adhesive applications where color and stability are critical when a highly colored aromatic tackifier will not suffice |
| Plastolyn |
Used as flow modifiers for plastics, especially polyvinylchloride (PVC) and acrylonitrile-butadiene-styrene (ABS) |
| Rosin Resin |
Foral-E |
Based on highly stabilized rosin developed for the adhesives and coatings industry. They are available with a softening point range from 80° to 110°C. |
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| Foralyn |
Impart superior adhesion and excellent cohesion to adhesives based on styrenic block copolymers and acrylic polymers, especially at higher temperatures |
| Pentalyn |
Excellent choice when a broad range of compatibility is vital |
| Permalyn |
Excellent choice when gloss is important in hot melt applications |
| Staybelite-E |
Recommended when a combination of oxidation resistance, tack retention and good color stability is required |
| Resin Dispersion |
Tacolyn |
Recommended for environmentally friendly applications, especially when seeking improved adhesion to polyolefin-based substrates |
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