Synthesis of new hybrid monomers and oligomers containing cationic and radical polymerizable vinyl groups and their photoinitiated polymerization

✍ Scribed by Hideyuki Itoh; Atsushi Kameyama; Tadatomi Nishikubo

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 611 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19960130)34:2<217::aid-pola8>3.0.co;2-q

✦ Synopsis

New hybrid vinyl monomers with both cationic-and radical-polymerizable vinyl groups were synthesized by the reaction of bis[ l-(chloromethyl)-2-(vinyloxy)ethyl]terephthalate (3) with unsaturated carboxylic acids using 1,8-diazabicyclo[5.4.0] -undecene-7 (DBU) as a base. The reaction of 3 with methacrylic acid 4a was carried out using DBU in DMSO at 70°C for 24 h to give an 86% yield of the hybrid vinyl monomer (5a). Polycondensation of 3 with unsaturated dicarboxylic acids was also performed using DBU to give hybrid vinyl oligomers with radical polymerizable C =C groups (V,) in the main chain and cationic polymerizable vinyl ether moieties (V,) on the side chain. The photopolymerization of these hybrid vinyl compounds proceeded smoothly in bulk using either a cationic photoinitiator such as a sulfonium salt or a radical photoinitiator such as acyl phosphine oxide under UV irradiation. 0 1996 John Wiley & Sons, Inc.