Compositions for the treatment of paper and/or cardboard surfaces and their use in the paper industry
AssigneeSociete Francaise Hoechst
InventorClaude Trouve
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Abstract
Compositions intended for the treatment of paper and cardboard surfaces characterized in that they have a pH of less than 6 and contain between 30 and 50% by weight of a mixture constituted by glyoxal (G), urea (U), an alkali metal salt of an oxygenated boron acid (A) and calcium hydroxide (D) in the following molar ratios ##EQU1## coating baths containing this composition and treated papers.
Claims6
Composition intended for the treatment of paper and cardboard surfaces characterized in that they have a pH of less than 7 and that it contains between 30 and 50% by weight of a mixture constituted by glyoxal (G), urea (U), an alkali metal salt of an oxygenated boron acid (A) and calcium hydroxide (D) in the following molar ratios:
- ##EQU3##
Dependencies are inferred from the claim text.