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:
Apr. 15, 1986
Filed:
Feb. 06, 1985
Dai-Ichi Kogyo Seiyaku Co., Ltd., Kyoto, JP;
Abstract
An anti-corrosive polyurethane coating composition which has excellent metal corrosion inhibiting property, water resistance, adhesion property to metals, impact resistance and other properties required for anti-corrosive paints, and can be coated thick with one coating operation, containing as an essential component a polyurethane resin having a density of crosslinking of 1.10 to 2.00 per 1,000 atomic weight of the resin and produced by reaction of (A) a polyol component having a hydroxyl value of 160 to 350 mgKOH/g and being composed of a castor oil polyol alone or a mixture of a castor oil polyol and a low molecular polyol having a functionality of at least 2, preferably at least 3, and (B) a polyisocyanate component in an NCO/active hydrogen ratio of 0.85-1.151 by equivalent.