Term: condensative chain polymerization https://doi.org/10.1351/goldbook.09009 Definition: Chain polymerization in which the individual propagation steps are condensation reactions. Note: Condensative chain polymerization appears under a variety of names, which include: chain-growth condensation polymerization, chain-growth polycondensation, catalyst-transfer polymerization, catalyst-transfer condensation polymerization, catalyst-transfer polycondensation. The use of terms that indicate CCP to be a form of polycondensation is deprecated as being inconsistent with the IUPAC definition of that term. Example: The polymerization of potassium 5-cyano-4-methyl-2-propylphenolate initiated by (4-fluorophenyl)(4-(trifluoromethyl)phenyl)methanone to make an aromatic polyether, in which <span title="substance">\(\ce{KF}\)</span> is the condensate. Example: Array Related Term: catalyst-transfer polymerization (http://doi.org/10.1351/goldbook.09010). Source: PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1140 (https://doi.org/10.1515/pac-2020-1211) Citation: 'condensative chain polymerization' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09009 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.