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Specialty Compounds RTP Company
HB Fuller KALAR® 5281 Elastomer
Categories: Polymer; Thermoplastic

Material Notes: KALAR® 5281 is a partially cross-linked butyl rubber compound pelletized for easy handling. KALAR® 5281 is modified with ethylene vinyl acetate (EVA) copolymer to improve lower temperature toughness and higher temperature processing. KALAR® products feature all the performance attributes expected of butyl rubber. KALAR® 5281 is light amber to yellow in color and is among the tightest cross-linked butyl rubber of the KALAR® products. It is designed as the starting point for applications that require the maximum resistance to creep and slump.

Features and Benefits: KALAR® 5281 contains no filler and its tenacity is due to the degree of cross-linking; not reinforcing fillers. This feature permits the compounder the widest formulating latitude. Other key performance benefits include:

  • Elimination of butyl rubber pre-mastication
  • Pellets may be metered to facilitate mixing
  • Requires no vulcanization
  • Readily acceptable in a wide range of solvents
  • Extends with high levels of fillers and plasticizers
  • Compatible with a wide choice of compounding ingredients
  • Creep and cold-flow resistance
  • Compounding economy

Information provided by H.B. Fuller Company

Vendors:
Available Properties
  • Specific Gravity, ASTM D71
  • Density, ASTM D71
  • Mooney Viscosity, ASTM D1646
  • Shelf Life
  
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Manufacturer Notes:
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Category Notes
Plastic

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