Polyester resin and toner binder employed the same
AssigneeSanyo Chemical Industries, Ltd.
InventorsMasao Fukuda, Takemi Nitta
Life of this patent
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Abstract
Polyester resin for a toner binder obtained by a reaction employing a polycarboxylic acid or its derivative, and a polyol comprising a phenolic resin possessing an oxyalkylene unit. This polyester resin applied for a toner binder for electrophotography which is excellent for fixing at low temperature and resistance to offset at elevated temperature.
Claims19
A polyester resin having a hydroxyl value ranging from 10 to 100, obtained from a reaction employing a polycarboxylic acid or its derivative, and a polyol comprising a phenolic resin possessing an oxyalkylene unit, wherein said phenolic resin has a nuclide number of 3 to 20.
A toner binder resin for electrophotography comprising a polyester resin having a hydroxyl value ranging from 10 to 100, wherein the resin is obtained from a polycarboxylic acid or its derivative, and a polyol comprising a phenolic resin possessing an oxyalkylene unit, wherein said phenolic resin has a nuclide number of 3 to 20 and a colorant.
Dependencies are inferred from the claim text.