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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.
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- Manufacturer: Eastman
- Product Line: Eastman AQ™ Polyesters
- Product: AQ™ Polymers
- Industries: Adhesives | Care Chemicals | Coatings | Inks
- Authorized Countries: Canada | United States
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Canada
United States
Overview
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
Related Applications
Adhesives
Care Chemicals
Coatings
Inks
Related Chemistries
Related Functions
Adhesives
Coatings
Inks
Related Technologies
Adhesives
Coatings
Inks
Eastman AQ™ Polyesters Articles
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