单词 | polyaddition |
释义 | polyadditionn. Chemistry. An addition reaction between two compounds which yields a polymeric product. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymerization > [noun] > addition polyaddition1948 the world > matter > chemistry > organic chemistry > chemical processes or reactions > [noun] > addition > polyaddition polyaddition1948 1948 Chem. Abstr. 42 6160 (heading) The diisocyanate polyaddition process. 1970 E. L. McCaffery Lab. Prep. for Macromolecular Chem. 58 Condensation polymerization..may take place either by a polycondensation reaction, whereby low molecular-weight by-product is formed along with the polymer,..or by a polyaddition reaction in which the total reactants are incorporated in the polymer chain, as is typified by polyurethane formation. 1998 Textile Horizons May 20/4 The polyester resins used as polyols in the manufacture of polyurethanes..are synthesised at room temperature using an enzymatic process which mimics a polyaddition type of reaction. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1948 |
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