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:
May. 15, 1979
Filed:
Mar. 06, 1978
Ryoji Ukita, Hitachi, JP;
Asao Isobe, Hitachi, JP;
Takao Hirayama, Hitachi, JP;
Shigeyoshi Tanaka, Hitachi, JP;
Abstract
A water-dispersible epoxy modified alkyd resin produced by reacting (A) 0-50 parts by weight of oil or oil fatty acid, (B) 10-50 parts by weight of polyhydric alcohol, (C) 0-25 parts by weight of monobasic acid having 6 to 18 carbon atoms, (D) 15-70 parts by weight of polybasic acid having 4 to 10 carbon atoms or its anhydride, (E) 5-25 parts by weight of polyoxyalkylene glycol having a molecular weight of 600 to 20,000, and (F) an epoxy compound, wherein the ratio of the hydroxyl groups to the carboxyl groups in the components (A) through (E) is 0.625-1.8 and the amount of the component (F) is 3-50 parts by weight per 100 parts by weight of the total weight of the components (A) through (E), can provide water-dispersible coatings having improved drying characteristics and water resistance as well as corrosion resistance.