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Synthesis of end-functionalized low molecular weight poly(butyl acrylate) and its elongation using a diisocyanate

✍ Scribed by Yoshihide Kawaguchi; Hajime Yasuda

Book ID
104425001
Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
145 KB
Volume
46
Category
Article
ISSN
1381-5148

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✦ Synopsis

Bifunctionalized poly(butyl acrylate) and poly(methyl methacrylate) were synthesized by the polymerization of butyl acrylate or methyl methacrylate using an organosamarium complex, [SmMe(C Me ) (CH -CH-CHCH )] , as an initiator 5 5 2 2 2 2 followed by the insertion of aldehydes. The polymerization proceeds quantitatively to afford the hydroxy-end functionalized polymer (M . 4120) with narrow molecular weight distributions (M /M , 1.13). The attempted chain elongation of the n w n resulting polymer with 4,49-methylenebis(phenylisocyanate) has however failed, while the chain extension was realized by the reaction of poly(e-caprolactone-co-butyl acrylate-co-e-caprolactone) (M . 15,200, M /M , 1.23) with a diisocyanate n w n

affording the desired high solid paint with M of 87,600 using a limited amount of THF as a solvent.

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