SYNTHESIS OF LOW TEMPERATURE OIL RESISTANT URETHANE ELASTOMERS.
Abstract
Cast elastomers were formulated from high mole cular weight polyether polyols with dichlorobenzidine, toluene diisocyanate, and low molecular weight crosslinking triols, and evaluated for their physical properties, including oil resistance and low temperature flexibility. Samples were prepared which meet the low temperature modulus at -55 C. with tensile strength of 700800 psi. Samples which meet the tensile requirements of 1200 psi hardened at -45 to -50 C. Trimethylol propane used as a crosslinking agent had less effect on low temperature modulus than glycerol. A high molecular weight polyether urethane plasticizer was not as effective as using a higher percent of polyether in one-shot formulations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1963
- Accession Number
- AD0430459