POLYTHIOETHER URETHANE-UREA ELASTOMERS RESISTANT TO FUELS AND SERVICEABLE AT LOW TEMPERATURES,

Abstract

Urethane-urea millable gums were prepared from polythioether diols or blends thereof with a tetrahydrofuran, ethylene oxide, allyl glycidyl ether terpolymer or a polyether containing epichlorohydrin. The presence of pendant unsaturation introduced by allyl glycidyl ether during diol preparation or glycerol allyl ether during gum preparation permitted these gums to be sulfur or peroxide cured. Although some vulcanizates of these elastomers exhibited good stress-strain properties, excellent oil and fuel resistance and fair low-temperature flexibility no one vulcanizate was able to meet all of these goals simultaneously. Zinc oxide markedly improved physical properties in sulfur-cured thioether vulcanizates. Hydroxy-polybutadiene resins were effective for introducing unsaturation into certain urethane-urea millable gums. (Author-PL)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0702242

Entities

People

  • W. M. Veroeven

Tags

DTIC Thesaurus Topics

  • Alkenes
  • Elastomers
  • Ethers
  • Ethylene Oxide
  • Ethylenes
  • Glycidyl Ether
  • Low Temperature
  • Oxides
  • Physical Properties
  • Polybutadiene
  • Resilience
  • Synthetic Rubber
  • Urethanes
  • Vulcanizates

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.