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:
Dec. 15, 1998
Filed:
Apr. 11, 1997
Akira Kawamura, Osaka, JP;
Akira Tanikawa, Osaka, JP;
Toshiyuki Hasegawa, Osaka, JP;
Sonoe Sato, Osaka, JP;
Sumitomo Chemical Company Limited, Osaka, JP;
Abstract
A water soluble resin obtainable by reacting at least two reactants comprising a polyamine and a urea compound, or at least four reactants comprising a polyamine, a urea compound, a dibasic carboxylic acid compound and a lactam; and then reacting the reaction product with at least one compound selected from among epihalohydrins, .alpha.,.gamma.-dihalo-.beta.-hydrins, glycidyl compounds and isocyanates. The resultant the water soluble resin is useful for making a paper coating composition, such as by being mixing that resin with a pigment and an aqueous binder. The paper coating composition does not generate formaldehyde and can be used to manufacture coated papers exhibiting improved properties including excellent water resistance.