{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T19:26:09Z","timestamp":1790709969513,"version":"4.1.0"},"reference-count":43,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,9,24]],"date-time":"2024-09-24T00:00:00Z","timestamp":1727136000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100016238","name":"Ministerie van Economische Zaken en Klimaat","doi-asserted-by":"publisher","award":["CHEMIE.PGT.2020.022"],"award-info":[{"award-number":["CHEMIE.PGT.2020.022"]}],"id":[{"id":"10.13039\/501100016238","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemSusChem"],"published-print":{"date-parts":[[2025,1,14]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Polyurethanes (PUs) are highly versatile polymers widely utilized across industries. However, chemical recycling of PU poses significant challenges due to the harsh conditions required and the formation of complex mixtures of oligomers upon depolymerization. Addressing this inherent lack of recyclability, we developed closed\u2010loop recyclable PU materials by integrating cleavable acetal groups. We present a sustainable and scalable synthesis method for acetal\u2010containing polyols (APs) through aldehyde\u2010diol polycondensation, utilizing reusable heterogeneous catalysts. Three APs with different hydrolytic stabilities depending on the structure of acetal groups were synthesized from formaldehyde, acetaldehyde, and propionaldehyde with 1,6\u2010hexanediol (H16). These APs were employed alongside 4,4\u2032\u2010methylene diisocyanate (MDI) for preparation of PU materials. The resulting PUs exhibited mechanical properties comparable to or surpassing those of conventional PUs, while demonstrating excellent recyclability under acidic conditions. Notably, hydrolysis of PU materials based on acetaldehyde\u2010derived APs yielded remarkable monomer recovery rates, with 89\u2009% for H16 and 84\u2009% for 4,4\u2032\u2010methylenedianiline, a precursor to MDI. Furthermore, we successfully demonstrated closed\u2010loop recycling by synthesizing APs from recovered H16, resulting in PU materials with identical properties to the original PU. This achievement highlights the potential for establishing a closed\u2010loop recycling system for acetal\u2010containing PUs, contributing to the advancement of a sustainable and circular economy.<\/jats:p>","DOI":"10.1002\/cssc.202401595","type":"journal-article","created":{"date-parts":[[2024,8,14]],"date-time":"2024-08-14T15:27:45Z","timestamp":1723649265000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Sustainable and Scalable Synthesis of Acetal\u2010Containing Polyols as a Platform for Circular Polyurethanes"],"prefix":"10.1002","volume":"18","author":[{"given":"Patrick","family":"Schara","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering and Chemistry Eindhoven University of Technology  5600 MB Eindhoven The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Cristadoro","sequence":"additional","affiliation":[{"name":"BASF Polyurethanes GmbH  Elastogranstra\u00dfe 60 49448 Lemf\u00f6rde Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rint P.","family":"Sijbesma","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Chemistry Eindhoven University of Technology  5600 MB Eindhoven The Netherlands"},{"name":"Institute for Complex Molecular Systems, Eindhoven University of Technology  5600 MB Eindhoven Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7944-5728","authenticated-orcid":false,"given":"\u017deljko","family":"Tomovi\u0107","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Chemistry Eindhoven University of Technology  5600 MB Eindhoven The Netherlands"},{"name":"Institute for Complex Molecular Systems, Eindhoven University of Technology  5600 MB Eindhoven Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,9,24]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201302766"},{"key":"e_1_2_7_2_1","volume-title":"The Polyurethanes Book","author":"Randall D.","year":"2003"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/macp.202000114"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wasman.2018.03.041"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/app.45087"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.reactfunctpolym.2019.03.012"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.3c01927"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10965-020-02383-z"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/cssc.202000949"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2GC03663K"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsomega.2c06297"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/pola.28576"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202216220"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.3390\/polym14224869"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.1c07911"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.2c07260"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-323-51133-9.00007-3"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.2c05647"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/app.26194"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.3c02311"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.1700782"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssuschemeng.2c07422"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8PY01219A"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/macp.201600071"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3gc42592d"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/pola.10490"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1039\/C9TA04073K"},{"key":"e_1_2_7_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10924-009-0129-8"},{"key":"e_1_2_7_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/app.44088"},{"key":"e_1_2_7_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.macromol.3c01645"},{"key":"e_1_2_7_31_1","unstructured":"T. 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