Editing Polypropylene (section)

==History==
[[Phillips Petroleum]] chemists [[J. Paul Hogan]] and [[Robert Banks (chemist)|Robert Banks]] first demonstrated the polymerization of propylene in 1951.<ref>{{cite journal |doi=10.1021/cen-v065n010.p030 |title=Discoverers of Polypropylene Share Prize |journal=Chemical & Engineering News |volume=65 |issue=10 |pages=30 |year=1987 |last1=Stinson |first1=Stephen }}</ref> The stereoselective polymerization to the isotactic was discovered by [[Giulio Natta]] and Karl Rehn in March 1954.<ref>{{cite book|url=https://books.google.com/books?id=GjtJfmxvSWgC&pg=PA76|page=76|title=Polymer Pioneers: A Popular History of the Science and Technology of Large Molecules|author=Morris, Peter J. T. |publisher=Chemical Heritage Foundation|year=2005|isbn=978-0-941901-03-1}}</ref> This pioneering discovery led to large-scale commercial production of isotactic polypropylene by the Italian firm [[Montecatini (company)|Montecatini]] from 1957 onwards.<ref>{{cite magazine |url=https://www.newscientist.com/article/mg19426014.900-this-week-50-years-ago.html |title=This week 50 years ago |magazine=[[New Scientist]] |date=28 April 2007 |page=15}}</ref> Syndiotactic polypropylene was also first synthesized by Natta.  Interest in polypropylene development is ongoing to the present.  For example, making polypropylene from bio-based resources is a topic of interest in the 21st century.<ref>{{Cite journal |last1=Wang |first1=Suxi |last2=Muiruri |first2=Joseph Kinyanjui |last3=Soo |first3=Xiang Yun Debbie |last4=Liu |first4=Songlin |last5=Thitsartarn |first5=Warintorn |last6=Tan |first6=Beng Hoon |last7=Suwardi |first7=Ady |last8=Li |first8=Zibiao |last9=Zhu |first9=Qiang |last10=Loh |first10=Xian Jun |date=2023-01-17 |title=Bio-Polypropylene and Polypropylene-based Biocomposites: Solutions for a Sustainable Future |url=https://onlinelibrary.wiley.com/doi/10.1002/asia.202200972 |journal=Chemistry: An Asian Journal |language=en |volume=18 |issue=2 |pages=e202200972 |doi=10.1002/asia.202200972 |pmid=36461701 |s2cid=253825228 |issn=1861-4728|url-access=subscription }}</ref>