Polyester resin for toner and process for its production

Details Polyester resin for toner and process for its production Polyester resin for toner and process for its production

1988-05-04

1989-09-12

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528274, 528308, 5283081, C08G 6302

Patent

active

048661589

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%.

REFERENCES:
patent: 4314049 (1982-02-01), Yasuda
patent: 4387211 (1983-06-01), Yasuda et al.
patent: 4533617 (1985-08-01), Inoue et al.
patent: 4588668 (1986-05-01), Yasuda et al.

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