Abstract
A study has been made of the press moulding of a polyphenylene prepolymer based on 4,4′-diacetyldiphenyl oxide. It was found that two main processes take place during formation of the phenylene type polymer structure. The reaction taking place at 250–300° results in transformation of ketal and acetyl endgroups into dypnone fragments leading to formation of polymer with a partially crosslinked structure. Further transformations of acetyl and dypnone groups take place during high temperature moulding (450°) through cyclopolycondensation, as well as dehydration and diphenylation processes resulting in the formation of polyphenylene type three-dimensional structures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
