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Polyols for Polyurethanes and Silane Modified Polyethers

 

Polyether polyols are key components used in the production of polyurethanes. AGC produces polyether polyol (PREMINOL™) from Propylene Oxide. Subsequently, AGC uses PREMINOL to produce silane modified polyether (EXCESTAR™) as a moisture-curable polymer. These polymers, available in the Americas, have high molecular weights exceeding 10,000. AGC employs an advanced catalyst process which results in polyols with ultra-low monol content, and a narrow molecular weight distribution.

PREMINOL™ and EXCESTAR™ Properties

PREMINOL has ultra-low monol content, high molecular weight ranging from 3,000-18,000, and a narrow molecular weight distribution. This provides good mechanical properties, high flexibility, good durability and good workability for coatings, adhesives, sealants, and elastomer applications.

EXCESTAR is a liquid polymer for silane modified polyether sealants and adhesives. Its unique properties such as high flexibility, heat resistance, weatherability, and stain resistance, enable EXCESTAR to be applied in various markets including construction, industrial, and electronics. EXCESTAR products are toxic free, easy to use and the perfect choice where safety issues are a concern.

PREMINOL™

(High Molecular Weight for Coatings, Adhesives, Sealants and Elastomers)

  • Ultra-low monol content
    • Good mechanical properties
    • Fast curing
  • High molecular weight
    • High flexibility
    • Good durability
  • Narrow molecular weight distribution
    • Good workability

EXCESTAR™

(Silane modified polyether for sealants and adhesives)

  • Moisture curing with terminally reactive silicon groups
    • Environmentally friendly
    • Good Adhesion
  • High molecular weight
    • High flexibility
  •  Does not have urethane bond
    • Good Heat Resistance
    • Good weatherability

PREMINOL™

(High Molecular Weight for Coatings, Adhesives, Sealants and Elastomers)

  • Good mechanical properties
    • High flexibility and high cohesive force are suitable for elastic adhesive
  • Good durability
    • High mechanical strength and high elongation enable to provide high durability sealants
  • Good workability
    • Low viscosity of formulation enables to seal easily even at low temperatures
  • Fast curing
    • Fast cure enables to shorten the total process time
  •  Environmentally friendly (Plasticizer free, Solvent free)
    • High flexibility and low viscosity polymer enable to reduce the amount of plasticizer and solvent in the formulation

EXCESTAR™

(Silane modified polyether for sealants and adhesives)

  • Environmentally friendly/safe
    • Solvent free, toxic free (amine, isocyanate), and low VOC material
    • Good for interior adhesion such as automotive and construction
  • Elasticity
    • Suitable for an application which requires expansion and contraction, high vibration resistance
    • Keeping elasticity for a long time.
  • Good Adhesion
    • Excellent adhesion for metal, plastics, and coating materials
  • Non-staining
    • Pollutant free
  • Good weatherability
    • Suitable for outdoor use
  • Good paint ability
    • Paintable with various kinds of paints

PREMINOL™

Can be applied to a wide variety of curable polymers by modifying the hydroxyl groups:

  • Home/Building/Construction
    • Siding sealant (cement, composite board, sash)
    • Reinforced concrete wall joint sealant
    • Floor (wood, concrete) adhesive
    • Decorative panel/Composite panel adhesive
    • Roofing sealant
    • Plasticizer for SMP formulations
  • Industrial (Automotive/Transportation)
    • Automotive interior and exterior adhesives
    • Shipping container sealants
    • Elevator assembly adhesive
  • Electronics
    • Electric component adhesive
    • Optical Clear Resin/Optical Clear Adhesive

EXCESTAR™

Has multiple advantages compared with silane terminated polyurethane:

  • Home/Building/Construction
    • Metal roof sealant
    • Exterior/Interior sealant
    • Interior adhesive (flooring, wall, celling)
  • Industrial (Automotive/Transportation/Other)
    • Interior materials adhesive
    • Windshield adhesive
    • Joint sealing (panel, glass)
  • Electronics
    • Electric component adhesive

  • Acid value
  • Density
  • Unsaturation
  • Viscosity
  • Water content
AGC Chemicals