Crosslinked polyester for toner and process for preparation ther

Details Crosslinked polyester for toner and process for preparation ther Crosslinked polyester for toner and process for preparation ther

1989-03-15

1990-12-25

Goodrow, John L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

430109, G03G 6318

Patent

active

049804480

ABSTRACT:
Disclosed is a crosslinked polyester for a toner, which has an acid value of 5 to 20 mgKOH/g, a flow index of 0.1.times.10.sup.-4 to 300.times.10.sup.-4 ml/sec and a softening point lower than 145.degree. C., the polyester being formed by mixing a dicarboxylic acid component, a diol component and at least one crosslinking component selected from a polyfunctional carboxylic acid component having a trivalency or a higher valency and a polyhydric alcohol component having a trivalency or a higher valency at a mixing ratio represented by the following formula (1), reacting the mixture at a reaction ratio represented by the following formula (2) and subjecting the esterification product to polycondensation and crosslinking.

REFERENCES:
patent: 4804622 (1989-02-01), Tanaka et al.
patent: 4849495 (1989-07-01), Funato et al.

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