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2. J. D. Gabbert andR. M. Hedrick, in ?Properties of RIM nylon 6 block copolymers? (AIChE symposium, Detroit, MI, Aug. 1981).
3. R. M. Hedrick andJ. D. Gabbert, in ?Reaction injection moulding of nylon 6 block copolymer? (Second World Congress of Chemical Engineers, Montreal, Oct. 1981).
4. J. D. Gabbert, A. Y. Garner andR. M. Hedrick,Polym. Comp.4 (1983) 196.
5. H. Mooij, in ?Properties and processing of the European produced NYRIM prepolymer? (UTECH 90 Conference Papers, the Hague, April 1990) p. 118.