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Novel photo-crosslinkable flame retardant polyvanillylidene arylphosphate esters

Kannan, P and Gangadhara, * and Kishore, K (1997) Novel photo-crosslinkable flame retardant polyvanillylidene arylphosphate esters. In: Polymer, 38 (17). pp. 4349-4355.

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Official URL: http://dx.doi.org/10.1016/S0032-3861(96)00907-X

Abstract

A new class of photo-crosslinkable flame retardant arylphosphate ester polymers based on diarylidenecycloalkanone groups has been synthesized by polymerizing 2,5-divanillylidene cyclopentanone and 2,6-divanillylidenecyclohexanone with various arylphosphorodichloridates by interfacial polycondensation using a phase transfer catalyst. The resulting polymers were characterized by inherent viscosity, g.p.c., i.r., H-1, C-13, P-31 n.m.r. spectroscopy. These polymers were studied for their photochemical and flame retardant properties. The divanillylidene cycloalkanone group in the chain function as photoactive centres while arylphosphate ester groups impart flame retardancy. The photo-crosslinking proceeds via 2 pi + 2 pi cycloaddition reaction of the divanillylidene cycloalkanone moieties. The crosslinking rate, thermal stability and flammability characteristics of the polymers increase with decrease in the size of the cycloalkanone ring. (C) 1997 Elsevier Science Ltd.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: polyarylphosphate esters;photo-crosslinkable;flame retardant
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 03 Aug 2011 09:58
Last Modified: 03 Aug 2011 09:58
URI: http://eprints.iisc.ernet.in/id/eprint/38328

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