Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-02-21
2006-02-21
Sergent, Rabon (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C522S090000, C522S116000, C525S293000, C525S331500, C525S454000, C525S455000, C525S457000
Reexamination Certificate
active
07001955
ABSTRACT:
An electron beam curing resin for a magnetic recording medium is provided, wherein a known thermosetting vinyl chloride resin or polyurethane resin is modified to become sensitive to an electron beam, and the resulting resin has a high cross-linking property. A method for readily manufacturing the above-described electron beam curing resin from a known thermosetting resin is provided. Furthermore, a high-performance magnetic recording medium including the above-described electron beam curing resin is provided. The electron beam curing resin is produced through a reaction between active hydrogen groups of a vinyl chloride resin or polyurethane resin having the active hydrogen groups in a molecule and a compound having an isocyanate group and a radical-polymerizing unsaturated double bond in a molecule, wherein the amount of water in the reaction system is controlled at 0.05 to 0.5 percent by mass relative to the resin when the reaction is effected.
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Kurose Shigeo
Sasaki Hideki
Tanaka Hiroyuki
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sergent Rabon
TDK Corporation
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