Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Sekisui S-LEC PVB BL-1 Polyvinyl Butyral Resin

Sekisui S-LEC PVB BL-1 is a high-clarity, hydrolysis-resistant polyvinyl butyral resin from Sekisui’s premium S-LEC series, engineered for automotive laminated safety glass interlayers and architectural glazing. It offers superior adhesion, UV stability, and impact resistance with consistent melt flow and low yellowness—ensuring optical quality and long-term durability in demanding applications.
  • sekisui s lec pvb bl 1 polyvinyl butyral resin_9e20b871
  • sekisui s lec pvb bl 1 polyvinyl butyral resin_9e20b871

Features Of Sekisui S-LEC PVB BL-1 Polyvinyl Butyral Resin

  1. Exceptional adhesion to glass and various substrates, ensuring reliable interlayer bonding in laminated safety glass.

  2. High optical clarity and low haze, meeting stringent requirements for automotive and architectural glazing.

  3. Outstanding UV resistance and long-term weatherability, minimizing yellowing and maintaining performance under prolonged sunlight exposure.

  4. Optimized rheology for efficient casting and lamination processes, enabling consistent film formation and minimal defects.

  5. Consistent batch-to-batch quality with tight molecular weight distribution, supporting reproducible manufacturing outcomes.

Typical Applications Of Sekisui S-LEC PVB BL-1 Polyvinyl Butyral Resin

  1. Automotive laminated windshields and side windows.

  2. Architectural safety glass for facades, skylights, and overhead glazing.

  3. Security glazing systems requiring bullet-resistant or blast-mitigating performance.

  4. Solar photovoltaic module encapsulation (frontsheet interlayer).

  5. Acoustic laminated glass for noise reduction in transportation and building envelopes.

Specifications Of Sekisui S-LEC PVB BL-1 Polyvinyl Butyral Resin

Chemical TypePolyvinyl butyral (PVB) resin
Product FormFree-flowing white granules
AppearanceOff-white to light yellow granular solid
Primary ApplicationsLaminated safety glass interlayer
Key FeaturesHigh adhesion, UV stability, optical clarity, processability
BenefitsEnhanced safety, durability, acoustic insulation, and design flexibility
Storage ConditionsStore in cool, dry place; protect from moisture and direct sunlight
ComplianceMeets ISO 12543 and EN 14449 standards for PVB interlayers


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