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Uv-Light Treatment of Poly(ethylene Terephthalate) Films

IP.com Disclosure Number: IPCOM000045902D
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Hiraoka, H: AUTHOR [+3]

Abstract

Poly(ethylene terephthalate) films have been used widely as substrates in recording media, like iron-oxide-doped polyurethane layers.

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Uv-Light Treatment of Poly(ethylene Terephthalate) Films

Poly(ethylene terephthalate) films have been used widely as substrates in recording media, like iron-oxide-doped polyurethane layers.

Poly(ethylene terephthalate) films are, however, well known for poor adhesive power to other media, like the polyurethane. A UV-light treatment can increase adhesive power of poly(ethylene terephthalate) films, in particular to polyurethane. Poly(ethylene terephthalate) is known to undergo a photo-Fries reaction, and photo-oxidation to have mono- and dihydroxy terephthalate moiety under UV-exposure in air; these hydroxy groups may provide reactive sites to polyurethane with NH-groups.

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