PALLADIUM-CATALYZED ALTERNATING COPOLYMERIZATION OF PROPYLENE AND CARBON-MONOXIDE - FORMATION OF POLY(SPIROKETAL KETONE)

Authors
WONG PK VANDOORN JA DRENT E SUDMEIJER O STIL HA
Citation
Pk. Wong et al., PALLADIUM-CATALYZED ALTERNATING COPOLYMERIZATION OF PROPYLENE AND CARBON-MONOXIDE - FORMATION OF POLY(SPIROKETAL KETONE), Industrial & engineering chemistry research, 32(5), 1993, pp. 986-988
Citations number
11
Categorie Soggetti
Engineering, Chemical
Journal title
Industrial & engineering chemistry research → ACNP
ISSN journal
08885885
Volume
32
Issue
5
Year of publication
1993
Pages
986 - 988
Database
ISI
SICI code
0888-5885(1993)32:5<986:PACOPA>2.0.ZU;2-W
Abstract
High molecular weight alternating copolymers of propylene and carbon m onoxide were prepared using a cationic palladium complex modified with 1,3-bis(di-n-butylphosphino)propane. Solid-state C-13 NMR analysis sh owed the presence of unexpected ketal repeat units in the isolated pol ymers which upon heating or dissolution in hexafluoro-2-propanol were converted into ketones. A mechanism involving intramolecular polymeriz ation of ketone and depolymerization of poly(spiroketal) is proposed t o account for the observations.