Polyester resin for toner and process for its production
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United States of America Patent
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-
Jan 29, 1991
Issued Date -
N/A
app pub date -
Feb 26, 1990
filing date -
May 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polyester resin for toner, which consists essentially of (a) from 0.5 to 50 mol %, based on the entire alcohol components, of at least one trihydric or higher polyhydric alcohol, (b) from 50 to 99.5 mol %, based on the entire alcohol components, of at least one diol and (c) at least one member selected from the group consisting of dicarboxylic acids and lower alkyl esters thereof, and which has a softening temperature of from 90.degree. to 170.degree. C., a glass transition temperature (Tg) of from 30.degree. to 70.degree. C., an acid value of from 0.5 to 15 mgKOH/g and a gel content of from 1.5 to 40%.
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