Electron-beam curable polyurethane compositions; and method

Details Electron-beam curable polyurethane compositions; and method Electron-beam curable polyurethane compositions; and method

1988-04-22

1991-07-02

Nielsen, Earl

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

522162, C08G 1867

Patent

active

050286838

ABSTRACT:
A method and agent for improving polyurethane binder compositions are provided. The method comprises introducing into the polyurethane backbone a diol residue including a double bond therein. Preferably the double bond is positioned in a moiety pendant from the polyurethane backbone. In preferred compounds, the double bond-containing residue is introduced in sufficient quantities to provide at least one double bond every 2,000-3,000 molecular weight units of polymer. Preferred agents include acrylate-, methacrylate-, acrylamide-, norbornenyl-, and cyclohexenyl-groups. Preferred compositions, both cured and uncured, are provided. Also, use of such a composition in magnetic recording media is described.

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Rand, William M., Jr., "Electron Curing of Magnetic Coatings", Radiation Curing, Feb., 1983, pp. 26-28 and 30-31.

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