PVB resin
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Introduction of PVB resin
Chemical Properties of PVB resins
Product Applications
Solubility of PCM-PVB resins
Chemical Properties of PVB resins

Polyvinyl Butyral Resins (Briefly known as PVB resin) is produced from the condensation reaction of PVA (Polyvinyl Acetate) and n­Butyl aldehyde, which is a thermoplastic resin. Due to its unique chemical structure, it contains three major functional groups:

  • Butyral group
  • Hydroxyl groups and
  • Acetyl groups
These three functional groups make PVB resins contain several very distinguishing properties listed as follows:

Functional group & molecular weight Special Properties of Functional groups
Butyral group
  • Good flexibility
  • Good compatibility with base resin
  • Better water resistance
  • Soluble in non- polarized solvent
  • Acetyl group
    (the residual acetate group)
  • Higher Tg value
  • Solution viscosity
  • Hydroxyl group
    (OH group)
  • Better adhesion
  • Higher reactivity with thermosetting resin
  • Degree of Polymerization
  • Increase film toughness
  • Easy control on softening point
  • Control on adhesion
  • Control on solution viscosity
  • Based on above unique properties, PVB can be widely used in a variety of applications as follows:

    Chemicals Properties Applications
    Strong adhesion (to glass, metal, wood, plastics, leather, ceramics) a. Coating on glass, metal, wood, leather, plastics
    b. Adhesion enhancer for above substrates
    PVB is excellent film form with high toughness and flexibility a. Lamination/adhesion for safety glass
    b. Protective coating primer
    Odorless and non­toxic a. Widely used in skin contact products
    b. Food contact products and inks
    Mechanical properties can be modified by degree of polymerization Easy to control to meet the applications need, so can be widely used in various industries
    Can cross­link with many resins like Phenolic, epoxy, urethane, urea and melamine resin, etc. Ease of application in many resin compounding systems
    Can blend with nitrocellulose and ketone resin to increase its hardness Can be used in wood and leather applications
    Good film properties also can be adjust by plasticizers Can be used in various coating and lamination applications
    Compatible to most of the major plasticizers Can be widely used in plastics field

    Above properties enable PVB resins to be used in various applications like automotive, marine, industrial, military, electronics, construction, printing and adhesives industries.

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