Selecting Tackifiers for Adhesives and Sealants
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.
Dibenzoate Plasticizers in Waterborne Acrylic PSAs
A balance of the tackifier and plasticizer can achieve the performance required. The plasticizer will allow use of less tackifier if so desired and may also moderate the resin’s effects. Diminish the holding power of the adhesive.
Sylvatac RE | IMCD US
SYLVATAC RE 40 is a low softening point rosin ester with good stability and mild odor. Its polymer compatibility allows it to be used as a tackifier/plasticizer in many adhesive systems, particularly where better wetting or low temperature tack is required.
Selecting Tackifiers and Plasticizers for PSA Formulations
Best combine plasticizers & tackifiers for optimal pressure sensitive adhesives performance. Ed Petrie will map current chemistries and share a systematic testing procedure to choose plasticizer and tackifiers for your PSA as well as solutions to maximize performance by balancing the plasticizer / tackifier couple. Read the full Course Outline.
5 Most Important Additives for Waterborne Adhesives
Tackifiers get their name from the fact that they are used to increase the tack or “stickiness” of the adhesive. In practice, formulators use tackifiers to make the correct balance between adhesion and cohesion which is dependent on the end-use application.
- What is tackifier & plasticizer?
- Due to the molecular property of the resin the tackifier quicky travels to the substrate on the compound providing the much needed building tack. Plasticizer: These resins contribute as plasticizers during the compound of the rubber compound.
- 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.
- What is the best tackifier resin?
- With more than 35 years of experience, and 30+ grades in AP Series we offer resins to a wide spectrum of Industries. POLYTONE® AP 121 and AP 121 H are our best offering as tackifier resin, these are Octyl Phenol based Novolak Resins which provide superior green tack along with added benefits of low colour and plasticizer properties.
- What are Tackifiers & plasticizers in PSAs?
- Source: Extance, A., “Using Tackifiers and Plasticizers in PSAs”, SpecialChem, February 9, 2009. Plasticizers are organic liquids or solids that are incorporated by melt processing or diffusion into a compatible polymer to reduce interaction between molecules and improve molecular mobility.
- 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 happens if a polymer is compatible with a tackifier?
- IF a polymer and the tackifier are compatible a single Tg is observed but shifted to a higher temperature due to the higher Tg tackifier resin. In case of incompatibility, there will be two different Tgs, one polymeric phase and one resin phase.
