Crosslinked polyester resin from trihydric alcohol

Details Crosslinked polyester resin from trihydric alcohol Crosslinked polyester resin from trihydric alcohol

1990-07-17

1991-10-15

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528296, 528298, 528302, 528305, 528307, 528308, C08G 6802

Patent

active

050575961

ABSTRACT:
Disclosed is a crosslinked polyester resin comprised of, based on the total acid units, (a) 1 to 30 mole % of units of a trihydric or higher alcohol or units of a trivalent or higher carboxylic acid, (b) 1 to 60 mole % of units of an alicyclic diol in which at least one alcohol component is a secondary alcohol, (c) 40 to 100 mole % of units of an aromatic dicarboxylic acid and (d) 40 to 99 mole % of units of a non-alicyclic diol, wherein the acid value is 0.5 to 25 mg-KOH/g, the glass transition temperature is 50.degree. to 80.degree. C., the softening temperature is not higher than 145.degree. C., the fixing-possible temperature covers a range of at least 30.degree. C., and the difference between the softening temperature and the glass transition temperature is not larger than 75.degree. C. The crosslinked polyester is used for toner for electrostatic recording.

REFERENCES:
patent: 4849495 (1989-07-01), Funato et al.
patent: 4866158 (1989-09-01), Kubo et al.

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