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:
Oct. 27, 1992
Filed:
Aug. 22, 1991
Applicant:
Inventors:
Shigeru Ura, Nara, JP;
Haruo Tanaka, Osaka, JP;
Hisao Takagishi, Kyoto, JP;
Yoshiya Fukuyama, deceased, late of Osaka, JP;
Hiroko Fukuyama, heir, Osaka, JP;
Takuya Fukuyama, heir, Osaka, JP;
Yuko Fukuyama, heir, Osaka, JP;
Assignee:
Sumitomo Chemical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106499 ; 106400 ; 106401 ; 528245 ; 528246 ; 528247 ; 528250 ; 528252 ; 528263 ; 528337 ; 528341 ; 528342 ;
Abstract
A process for producing a resin is disclosed, comprising reacting (a) a polyalkylenepolyamine, (b) an alicyclic dibasic carboxylic acid and/or a reaction product having a free carboxyl group that is obtained by reacting an alicyclic dibasic carboxylic acid with a glycol, (c) a urea, and (d) an aldehyde and/or an alkylating agent. The resulting resin is useful as a wet strength agent to provide a paper coating composition having improved printability and printing effects.