Electron beam curable urethane resin for magnetic recording...

Details Electron beam curable urethane resin for magnetic recording... Electron beam curable urethane resin for magnetic recording...

2006-04-11

2006-04-11

Sergent, Rabon (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C360S131000, C428S423100, C428S900000, C522S096000, C522S174000, C525S455000, C525S457000, C528S073000

Reexamination Certificate

active

07026371

ABSTRACT:
An electron-beam curable polyurethane resin for magnetic recording media is produced by modifying a polyurethane resin having active hydrogen in the molecule thereof with a compound having at least two acrylic double bonds, wherein the modification is performed on the active hydrogen so that the polyurethane resin becomes electron-beam curable. By subjecting a known thermosetting polyurethane resin to electron-beam sensitive modification, the resulting resin is highly crosslinked and is thus capable of being suitably used for magnetic recording media. Also, an electron-beam curable polyurethane resin having excellent crosslinking characteristics can easily be produced from the known thermosetting polyurethane resin. Furthermore, by using the electron-beam curable polyurethane resin, a high-performance magnetic recording medium can be provided.

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