Selecting Plasticizers for Adhesives and Sealants
Plasticizers are used in all types of adhesive and sealant formulations. They are used primarily to the final bond and to provide improved low-temperature properties. However, plasticizers can also supply additional benefits that are important to both the formulator and end-user.
Eastman Plasticizers for Adhesives
Benzoflex 9-88 is a high solvating benzoate ester plasticizer that can be used in a wide variety of polymer systems and applications. Its diverse uses include resilient flooring, adhesives, caulks, and sealants. Product availability by region: Asia Pacific | Europe, Middle East, & Africa | Latin America | North America
Phthalates - Adhesives Ingredients Selection
Palatinol 711P by BASF is phthalate plasticizer used in adhesives for automotive and medical applications. Palatinol 711P offers low volatility, gloss finish, low-temperature flexibility and good... view more Palatinol 911 BASF Palatinol 911 by BASF is a plasticizer.
Improved Plasticizers Help to Fill the Gap in Polysulfide Sealants
Recently, novel monomeric and oligomeric dibenzoate plasticizers have been introduced; these new plasticizer solutions have been specially tailored for polysulfide sealant applications. These plasticizers have been found to be high-performing, low-fogging alternatives to traditional chemistries used in polysulfides.
Selecting Tackifiers for Adhesives and Sealants
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 a plasticizer used for?
- Plasticizers have been used to give polymers a permanent adhesive character (pressure sensitivity), or to regulate their adhesion-cohesion balance to achieve removability. For example, plasticizers can be incorporated into peelable pressure-sensitive adhesive to soften the adhesive, and thus improve peelability and clean removal.
- What types of plasticizers are used in adhesives & sealants?
- Oils (like paraffinic, naphthenic, and aromatic) are used mainly as plasticizers in non-polar adhesives. These are generally used in the hot-melt adhesives and sealants. Base polymers include the mid-blocks of styrene-butadiene copolymers and polyolefin-based adhesives. Polymeric plasticizers are used frequently in adhesives and sealants.
- How do I choose a plasticizer?
- The key evaluation parameters in choosing a plasticizer are: Plasticizers will reduce the melt viscosity of hot-melt adhesives and 100% solids adhesives & sealants. However, the addition of certain plasticizers to a polymeric emulsion will usually result in increased viscosity.
- Do plasticizers reduce the viscosity of adhesives & sealants?
- Plasticizers will reduce the melt viscosity of hot-melt adhesives and 100% solids adhesives & sealants. However, the addition of certain plasticizers to a polymeric emulsion will usually result in increased viscosity. This effect can be used to formulate a waterborne adhesive having greater coating thickness build-up.
- What is plasticizer compatibility?
- Plasticizer compatibility is the key to plasticizer performance in adhesives and sealants. In latex systems, compatibility can be assessed by observing the viscosity increase after the addition of the plasticizer and by observing the clarity of a cast film of the plasticized adhesives.
- Why are plasticizers used as extenders?
- Plasticizers may also be one of the least expensive additives used in adhesives and sealants, and they can be used in relatively large concentrations depending on the application and formulation (up to 100 parts by weight per 100 parts of the base polymer). For these reasons, they are sometimes used as extenders for cost-reducing purposes.
