SYNTHESIS OF LOW TEMPERATURE OIL RESISTANT URETHANE ELASTOMERS.
Abstract
Elastomers were from very high moleculer weight polyether triols, dichlorobenzidine (DCB), and tolune disocyanate (TDI), and their properties evaluated. Moisture absorption of these elastomers was improved over that of previous elastomers prepared from similar high molecular weight triols. Low temperature torsional moduli of these elastomers were excellent, but this was accomplished at the expense of lower physical properties and higher oil absorption. High molecular weight polyols were prepared by coupling polyethers with sebacyl chloride. Elastomers prepared from the polyols had poor mechanical properties and high torsional moduli at low temperatures. An elastomer prepared from a 6000 molecular weight polypropylene oxide triol-TDI prepolymer chain extended with 2-methylpiperazine had excellent low temperature properties and very low hardness, but poor oil resistance. Elastomers were prepared from a 5600 molecular weight triol, DCB, and three isomer ratios of TDI. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1963
- Accession Number
- AD0423013