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. 31, 1985
Filed:
Nov. 05, 1982
Applicant:
Inventors:
Yoshio Okada, Iwaki, JP;
Yuriko Igarashi, Iwaki, JP;
Assignee:
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B32B / ;
U.S. Cl.
CPC ...
42840221 ; 264-47 ; 346215 ; 428914 ;
Abstract
Disclosed herein is a microcapsule for pressure-sensitive recording paper, wherein the microcapsule contains a solution of color-former and has a membranous wall of resin formed by the polycondensation of a water-soluble cationic urea resin with either (i) at least two prepolymers selected from the group consisting of melamine-formaldehyde prepolymer, a thiourea-formaldehyde prepolymer and a melamine-thiourea-formaldehyde prepolymer or (ii) a melamine-thiourea-formaldehyde prepolymer.