Selecting Tackifiers for Adhesives and Sealants
Hydrocarbon resin tackifiers are manufactured from petroleum-based feedstock, and therefore, they have the disadvantage of being linked to the price of oil. These resins have a somewhat lower compatibility range with base polymers than tackifiers produced from natural feedstock.
Tackifiers | ExxonMobil Product Solutions
We offer a broad portfolio of polymers and premium tackifiers with a focus on hot-melt adhesives (HMA) for packaging applications. With our world-class technology and industry-leading expertise, we help our customers develop unique solutions through polymer science. Our Escorez tackifiers are amorphous, glassy, low-molecular-weight hydrocarbon
KURARAY LIQUID RUBBER - Elastomer Division | Specialty Chemicals
KURARAY LIQUID RUBBER as a reactive plasticizer Depending on molecular weight (MW), KURARAY LIQUID RUBBER can act as rubber replacement or as a reactive plasticizer. KURARAY LIQUID RUBBER is cross-linkable with base rubber and acts like a process oil, but does not bleed. Content Features and benefits / applications Types of KURARAY LIQUID RUBBER
Sylvatac RE | IMCD US
SYLVATAC RE 25 is recommended as an adhesive tackifier where the good wetting performance is required. Recommended uses include packaging, bookbinding, disposable, pressure sensitive and other adhesive applications as well as sealants, coatings and wax-based products.
Product Catalog | Natrochem, Inc.
is a low-cost, dark, non-staining, thermoplastic oleo-resinous product having a pitch base, with viscosity adjustments made with a process oil. The performance properties are comparable to or superior to pine tar. Tarene 90P finds its widest application as plasticizer, tackifier, and processing aid in rubber compounding.
- Does tackifier increase Tg?
- Therefore, the tackifier addition raises the Tg of the final adhesive. Tackifiers operate opposite to plasticizers which lower the Tg of the adhesive formulation. The tackifying agent must be compatible with the base polymer. With hot-melt adhesives, consideration must also be given to the heat stability of the tackifier in the melt.
- What are Tackifiers used for?
- In adhesive and sealant formulations, tackifiers are used to generate tack and improve specific adhesion (peel strength). They are incorporated into base polymers which mainly lack tackiness and pressure-sensitive properties but provide cohesion.
- Does a tackifier reduce the modulus of a polymer?
- Because tackifiers have lower molecular weight than the base polymer, they dilute the polymeric network and reduce the modulus. A plasticizer by itself could also reduce the modulus, but this is generally an ineffective approach because the Tg of the entire formulation is significantly reduced.
- How do I choose a tackifier for a hot-melt adhesive?
- With hot-melt adhesives, consideration must also be given to the heat stability of the tackifier in the melt. Tackifiers with unsaturation could potentially gel while the adhesive is in the melt phase. They should also have a relatively low surface tension so as to readily wet the substrate.
- What is a hydrocarbon resin tackifier?
- Hydrocarbon resins tackifiers are either aliphatic, aromatic, or mixtures of the two. Hydrocarbon resin tackifiers are polymerized to raise their softening points to a level that is useful in adhesives. They are low molecular weight amorphous synthetic polymers. Table below summarizes the most common types of hydrocarbon resin tackifiers.
- Why do formulators use Tackifiers?
- In practice, formulators use tackifiers to make the correct balance between adhesion and cohesion which is dependent on the end-use application. They do this by lowering the modulus and increasing the glass transition temperature of the final adhesive. Tackifiers must be considered with regard to:
