prepolymerizationn.
/priːˌpɒlᵻmərʌɪˈzeɪʃn/, U.S. /ˌpripəˌlɪmərəˈzeɪʃ(ə)n/, /ˌpripəˌlɪməraɪˈzeɪʃ(ə)n/, /priˌpɑləmərəˈzeɪʃ(ə)n/, /priˌpɑləməˌraɪˈzeɪʃ(ə)n/ The conversion of a monomer into a partially polymerized form or prepolymer, as an initial stage in polymerization.
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prepolymerization1936
1936 Industr. & Engin. Chem. (Industr. ed.) 28 1164/2 Prepolymerization of the resin-forming mix before treatment decreases the antishrink efficiency.
1949 B. L. Davies Technol. Plastics ix. 151 If the prepolymerization of the resin is carried too far, the flow in the mould is restricted so that only a limited range of mouldings can be produced.
1994 Proc. National Acad. Sci. U.S.A. 91 12979/1 Because similar monomers attract each other in the prepolymerization mixture, they have a high probability of becoming neighbors along the chain.
2002 Progress Org. Coatings 44 227/2 The reactions were carried [out] at 100°C in butyl acetate..and the end of the prepolymerisation was controlled by chemical titration.
This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).
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n.1936