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Optimized for high clarity and exceptional optical transparency in laminated safety glass applications.
Superior adhesion to both glass and polycarbonate substrates without requiring primers.
Excellent thermal stability and consistent melt flow behavior during autoclave lamination processing.
Low yellowing tendency under UV exposure, ensuring long-term color stability in architectural and automotive glazing.
Controlled moisture absorption profile, minimizing interlayer haze and delamination risk in humid environments.
Automotive laminated windshields and side windows.
Architectural safety glazing for facades, skylights, and overhead installations.
Security and blast-resistant glazing systems.
Solar photovoltaic (PV) module encapsulation layers.
Acoustic laminated glass for noise-reduction applications in transportation and buildings.
| Chemical Type | Polyvinyl butyral (PVB) resin |
| Product Form | Free-flowing white granules |
| Appearance | Off-white to light yellow, uniform granular solid |
| Primary Applications | Laminated safety glass interlayer |
| Key Features | High adhesion, low haze, UV stability, controlled viscosity |
| Benefits | Enhanced optical performance, reliable lamination yield, improved durability |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
| Compliance | Meets ISO 12543 and EN 356 standards for PVB interlayers |
Q1: What is the primary functional role of S-LEC PVB BX-L in adhesive and coating formulations?
A: S-LEC PVB BX-L functions primarily as a high-performance binder and adhesion promoter, enhancing interfacial bonding between dissimilar substrates—especially in laminated safety glass interlayers and specialty protective coatings—due to its balanced polarity, excellent film-forming capability, and strong affinity for both inorganic and organic surfaces.
Q2: How does BX-L differ from standard PVB resins in terms of processing behavior?
A: BX-L is engineered for improved solubility and lower melt viscosity compared to conventional PVB grades, enabling easier handling in solvent-based systems and facilitating uniform dispersion without excessive shear or extended mixing time—particularly beneficial in high-solids coating and laminating applications.
Q3: Is S-LEC PVB BX-L suitable for use in automotive interior applications requiring low VOC and low fogging performance?
A: Yes—BX-L exhibits inherently low volatility and minimal low-molecular-weight extractables, making it well-suited for automotive interior components where stringent fogging and VOC emission requirements apply; formulation optimization is recommended to fully realize these benefits.
Q4: What types of solvents are commonly used to dissolve S-LEC PVB BX-L?
A: BX-L demonstrates good solubility in typical oxygenated solvents such as ethanol, isopropanol, n-butanol, ethyl acetate, and ketones like methyl ethyl ketone (MEK) and cyclohexanone; mixtures of alcohols and esters are frequently employed to balance evaporation rate and film quality.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
