Liners and Bladders

Butyl

Flexible, robust material with excellent wear, damage resistance and durability.  A brand of synthetic rubber prepared by polymerization of butylene containing little butadiene, particularly useful for inner tubes of automobile tires because of its leakproof qualities.

Product Description

Butyl – mainly used for potable water storage.  Flexible, robust material with excellent wear, damage resistance and durability. 100% UV protection. Quick and easy installation, easy to repair.  Material retains its properties -30°C to +40°C.

  • Certified product, can be in contact with potable water
  • Lifetime 15+ years

Butyl rubber is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as “PIB” or polyisobutene, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, having two methyl groups substituted on every other carbon atom. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor.

It can be made from the monomer isobutylene or CH2=C(CH3)2 only via cationic addition polymerization.  A synthetic rubber, or elastomer, butyl rubber is impermeable to air and used in many applications requiring an airtight rubber. Polyisobutylene and butyl rubber are used in the manufacture of adhesives, agricultural chemicals, fiber optic compounds, ball bladders, caulks and sealants, cling film, electrical fluids, lubricants (2 stroke engine oil), paper and pulp, personal care products, pigment concentrates, for rubber and polymer modification, for protecting and sealing certain equipment for use in areas where chemical weapons are present, as a gasoline/diesel fuel additive, and chewing gum. The first major application of butyl rubber was tire inner tubes. This remains an important segment of its market even today.

Specifications

Please contact us directly for further details and specifications.

Butyl rubber has excellent impermeability, and the long polyisobutylene segments of its polymer chains give it good flex properties.

The formula for PIB is: –(–CH2–C(CH3)2–)n

The formula for IIR is: Butyl rubber formula.png