logo

For the Inventor, By the Inventor

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.:

US 4849495 B1

PDFFull Text
Date of Patent:
Jul. 18, 1989

Filed:

May. 31, 1988

Polyester resin from tri- or higher polycarboxylic acid for toner and

Applicant:
Inventors:

Ryo Funato, Nagoya, JP;

Shinji Kubo, Nagoya, JP;

Noriyuki Tajiri, Toyohashi, JP;

Hirokazu Ito, Toyohashi, JP;

Hitoshi Iwasaki, Toyohashi, JP;

Assignee:

Mitsubishi Rayon Company Limited, Tokyo, JP;

Attorney:

Cushman, Darby & Cushman

Primary Examiner:

Harold D Anderson

Assistant Examiner:

T Mason

Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528194 ; 528176 ; 528180 ; 528181 ;
Abstract

A polyester resin for toner, which consists essentially of (a) from 5 to 60 equivalent %, based on the entire carboxylic acid components, of at least one member selected from the group consisting of tribasic and higher polybasic carboxylic acids, anhydrides thereof and lower alkyl esters thereof, (b) at least one member selected from the group consisting of dicarboxylic acids and lower alkyl esters thereof, (c) at least one aromatic diol and (d) at least one aliphatic diol, and which has a softening temeprature of from 100.degree. to 170.degree. C., a glass transition temperature (Tg) of from 50.degree. to 70.degree. C., an acid value of from 0.5 to 10 mgKOH/g and a gel content of from 3 to 40%.

Find Patent Forward Citations

Funato, Ryo. (1989). Polyester resin from tri- or higher polycarboxylic acid for toner and (U.S. Patent No. 4849495). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4849495

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…