Lubricating insolubilizer for paper coating composition
AssigneeSequa Chemicals, Inc.
InventorLouis R. Dragner
Life of this patent
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Abstract
Paper coating compositions contain at least one pigment, at least one binder, and as an insolubilizer for the binder, the product of reacting glyoxal with a polyhydroxyl substituted ester, then with a polyol.
Claims14
A lubricating insolubilizer for binders for paper coating compositions which comprises the reaction product of glyoxal with a polyhydroxyl substituted ester selected from the group consisting of sorbitan monolaurate, sorbitan mon-oleate, sorbitan monostearate, sorbitan monopalmitate, glycerol monostearate, glycerol monopalminate, glycerol monomyristate, trimethylol ethane monostearate, trimethylol ethane monopalminate, trimethylol ethane monomyristate, trimethylol propane monostearate, trimethylol propane monopalminate, trimethylol propane monomyristate, pentaerythritol monostearate, pentaerythritol monopalminate and pentaerythritol monomyristate and their mixtures, and then with a polyol containing two or more hydroxyl groups selected from the group consisting of ethylene glycol, glycerin, propylene glycol, trimethylol propane, sorbitol and their mixtures.
The reaction product of glyoxal with a polyhydroxl substituted ester selected from the group consisting of sorbitan monolaurate, sorbitan mono-oleate, sorbitan monostearate, sorbitan monopalmitate, glycerol monostearate, glycerol monopalminate, glycerol monomyristate, trimethylol ethane monostearate, trimethylol ethane monopalminate, trimethylol ethane monomyristate, trimethylol propane monostearate, trimethylol propane monopalminate, trimethylol propane monomyristate, pentaerythritol monostearate, pentaerythritol monopalminate and pentaerythritol monomyristate and their mixtures, and then with a polyol containing two or more hydroxyl groups selected from the group consisting of ethylene glycol, glycerin, propylene glycol, trimethylol propane, sorbitol and their mixtures.
A paper coating composition comprising a pigment, a binder, and as an insolubilizer for the binder the reaction product of glyoxal with a polyhydroxyl substituted ester selected from the group consisting of sorbitan monolaurate, sorbitan mono-oleate, sorbitan monostearate, sorbitan monopalmitate, glycerol monostearate, glycerol monopalminate, glycerol monomyristate, trimethylol ethane monostearate, trimethylol ethane monopalminate, trimethylol ethane monomyristate, trimethylol propane monostearate, trimethylol propane monopalminate, trimethylol propane monomyristate, pentaerythritol monostearate, pentaerythritol monopalminate and pentaerythritol monomyristate and their mixtures, and then with a polyol containing two or more hydroxyl groups selected from the group consisting of ethylene glycol, glycerin, propylene glycol, trimethylol propane, sorbitol and their mixtures.
The composition of claim 11 wherein the polyhydroxyl substituted ester is present in an amount of about 30 to 70% by weight of the insolubilizer, the glyoxal is present in an amount of about 20 to 60% by weight of the insolubilizer and the polyol is present in an amount of about 5 to 25% by weight of the insolubilizer.
Dependencies are inferred from the claim text.