Selvol Ultiloc 5003
for Enhanced Barrier in Flexible Packaging
SEKISUI Specialty Chemicals is pleased to introduce Selvol Ultiloc 5003. As part of the Ultiloc family, it expands on the proven performance of Selvol polyvinyl alcohol (PVOH/PVA).
Ultiloc 5003 integrates enhanced reactivity, adhesion and film formation into one advanced PVOH copolymer for modern coatings and packaging.
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Key Characteristics
Ultiloc 5003 combines multifunctional chemical traits that boost performance across coatings, films and related formulations.
A Focus on Sustainability in Packaging
Sustainable flexible packaging continues to gain momentum. Ultiloc 5003 supports this shift with a low-VOC, recyclable, water-based formulation.
Ultiloc 5003 works in traditional multilayer structures and improves polypropylene (PP) or polyethylene (PE) monomaterial formats. Its balanced barrier and adhesion characteristics help improve recyclability and simplify production.
Additionally, Ultiloc 5003 advances ongoing paperization initiatives by enabling biodegradable, aqueous barrier coatings for fiber-based packaging structures.
As a coating component, it enhances oxygen barrier performance at low to moderate humidity. It also performs reliably across diverse substrates.
These characteristics can reduce tie-layer requirements and streamline converting. They also enable more efficient film structures with fewer materials.
Ultiloc 5003 is a viable replacement for PVdC or EVOH in many barrier packaging applications. Overall, it offers strong performance with a more sustainable profile.
Ultiloc 5003 demonstrates superior multi-substrate adhesion compared to Selvol 107 and Selvol 508 in 90° peel tests
Typical Properties and Solution Preparation Guidelines
Learning Ultiloc 5003’s core properties helps you prepare stable, consistent solutions for coatings, films and other formulations. Use these guidelines to support predictable viscosity, film quality and coating behavior.
Commercial and Analytical Properties (Solution Basis)
These solution-based properties define Ultiloc 5003’s behavior in solution and during application:
- Viscosity (4% at 20 °C): 5.0–10.0 cPs
- Ash (wt%): ≤ 3.0 (as Na₂O)
- Volatile (wt%): ≤ 5.0
- pH (4%): 9.0–12.0
Recommended Solution Range
Ultiloc 5003 performs well in 10–15% by-weight solutions. This range balances viscosity and supports smooth, uniform film formation.
These concentrations provide predictable handling during mixing and application. They also support stable viscosity profiles across typical coating and drying conditions.
Preparation Steps for Stable Coatings
Follow these steps to prepare Ultiloc 5003 solutions for consistent performance:
- Charge room-temperature water to a vessel with active mixing.
- Begin agitation until the surface moves vigorously.
- Add Ultiloc 5003 gradually, then heat to 85–90 °C.
- Hold at temperature for about 30 minutes to fully dissolve.
- Optional: Add 10–20% IPA or ethanol to aid coating low-energy substrates and reduce foaming.
A biocide is not required for storage over 24 hours. Premade Ultiloc 5003 solutions are available for fast preparation.
Brought to You by SEKISUI Specialty Chemicals
Ultiloc 5003 reflects SEKISUI Specialty Chemicals’ continued investment in eco-friendly, advanced PVOH technologies.
SEKISUI produces Selvol, a line of high-performance polyvinyl alcohol polymers and copolymers used across many industries. We also supply Advancell expandable microspheres and S-LEC B/K polyvinyl acetal resins.
SEKISUI operates as a subsidiary of the Sekisui Chemical Group, a multibillion-dollar global organization. The Group delivers products and technologies that support housing, social infrastructure and chemical solutions worldwide.
