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AQ™ 55S Polymer
AQ™ 55S is a water-dispersible sulfopolyester resin in pellet form. It is used as an aqueous film former in coatings and inks.
Eastman AQ™ 55S is a water-dispersible polyester resin that directly creates dispersions in hot water without the aid of surfactants or additives. Compared to the other Eastman AQ™ sulfopolyesters, the AQ™ 55S resin has a relatively high Tg of approximately 55°C, allowing it to form rigid, low-tack films. Aqueous dispersions of Eastman AQ™ 55S can be applied to various substrates and will rapidly dry at room temperature to form clear thermoplastic films. This is due to the relatively small particle sizes that constitute the AQ™ sulfopolyester dispersion. Since AQ™ sulfopolyester resins are plasticized by water, they also exhibit a relatively low minimum film formation temperature and do not require organic coalescing agents to form films.
Films formed by Eastman AQ™ 55S are smooth and have excellent resistance to humidity, making them ideal for inks and coatings. In addition, dispersed sulfopolyesters like AQ™ 55S help to disperse solid pigments, making them useful for pigmented aqueous ink and coating formulations.
AQ™ 55S can also be used as a film-forming polyester resin in water-based heat seal coatings. In this application, dispersions of AQ™ 55S can be easily applied to packaging films to form a clear, thermoplastic coating that can be heat sealed to films and foils.
Specifications
Form: Pellets Color: Pale amber Glass transition temperature (Tg, dry polymer (°C): 51–55 Inherent viscosity (@ 200°C, Poise): 42,000 Acid number (mg KOH/g): Less than 2 Hydroxyl number (mg KOH/g): Less than 10 Bulk density (lb/gal): 6.8
Primary Chemistry: Sulfopolyester
Primary Chemistry: Sulfopolyester
Features & Benefits
High gloss Excellent film formation with or without alcohol Fast drying rates Odor free Low tack Water resistant
Problems Solved
Requirement of plasticizers to induce film formation Low gloss in coating and ink formulations Slow dry times for coating and ink films Poor water dispersibility of polyester resins
Applications
Inks Coatings Heat seal coatings Overprint varnishes
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Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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