SYNTHESIS OF POLYETHER-MODIFIED POLYCARBONATE ELASTOMERS.
ARMY WEAPONS COMMAND ROCK ISLAND ILL SCIENCE AND TECHNOLOGY LAB
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Block copolymers based on polyether polyols and compounds related to the bisphenol structure were synthesized by copolycondensation with phosgene. Elastomers were obtained from the copolycondensation of hydroxy terminated polyethers with phenolphthalein, diphenolic acid or derivatives of diphenolic acid. These elastomers were crosslinked with sulfur and peroxide curing systems, and exhibited tensile strengths up to 2250 p.s.i., 13 percent volume swell after immersion in ASTM No. 3 Oil for 70 hours at 212F, and flexibility at temperatures below-67F. Author
- Polymer Chemistry
- Elastomers and Rubber