Sizing composition with cationic and anionic component
AssigneeManufacture de Produits Chimiques Protex
InventorGeorges Veaute
Life of this patent
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Abstract
Paper is coated or sized with a composition which includes in addition to the used paper-treating agents one or more cationic compounds and a dispersion of a polymer soluble in an alkaline medium and consisting of an alkali metal salt or alkaline earth salt of an unsaturated carboxylic acid, or a copolymer obtained by polymerization or an unsaturated carboxylic acid with acrylic or methacrylic acid esters.
Claims2
A composition for coating paper consisting essentially of about 100 parts of Kaolin pigment, about 0.8 parts of a copolymer of ethylacrylate, methacrylic acid, vinyl trimethoxy silane and triallyl phosphate;
- about 0.75 parts of a polyethyleneimine of molecular weight of 4000 to 6000;
- about 4.45 parts of a styrene-butadiene binder;
- about 0.73 parts of aluminum stearate;
- and an effective amount of a sizing compound.
A composition for coating paper consisting essentially of a pigment containing about 70 part Kaolin and about 30 parts calcium carbonate;
- about 7.5 parts of a starch binder;
- about 6.5 parts of a styrene-butadiene binder;
- about 0.45 parts of a thermosetting resin;
- about 0.8 parts of a copolymer of ethylacrylate, methacrylic acid, vinyl trimethoxy silane and trialkyl phosphate;
- about 0.12 parts of polyethyleneimine of molecular weight of 4000 to 6000 and an effective amount of a sizing component.
Dependencies are inferred from the claim text.