The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1987
Filed:
Jan. 16, 1985
Charles J Amirsakis, Lake Geneva, WI (US);
Morton Thiokol, Inc., Chicago, IL (US);
Abstract
Electron beam curable polyurethane resin comprising the reaction product of a hydroxyl terminated polyester; a compound having ethylenic unsaturation and at least 2 hydroxyl moieties; optionally, a chain extender which is a lower aliphatic or cycloaliphatic diol; and an approximately stoichiometric proportion of an aliphatic, cycloaliphatic, or aromatic diisocyanate. The ethylenically unsaturated component has an essentially aliphatic backbone, and optionally can include carbamate linkages. Magnetic coatings incorporating these resins are adapted to be applied to a substrate, calendared, then crosslinked by exposure to electron beam radiation. Magnetic media made with such coatings are also disclosed. The present resins, and coatings made from them, have superior properties to other coatings of this type.