Maleic anhydride/olefin polymer stain-resists
AssigneeE. I. Du Pont de Nemours and Company
InventorEngelbert Pechhold
Life of this patent
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Abstract
A polyamide fibrous substrate having deposited on it an amount of a composition effective to impart stain-resistance comprising a water-soluble or water-dispersible alpha-olefin/maleic anhydride polymer or a mixture of said polymers, and processes for preparing the substrates. The maleic anhydride polymer is used either in hydrolyzed form or in the form resulting from reacting it with a lower alkyl alcohol so as to form an alpha-olefin/maleic acid monalkyl ester polymer.
Claims11
A polyamide nylon or polyamide wool substrate having deposited on it an amount of a composition comprising a water-soluble or water-dispersible 1 -alkene/maleic anhydride polymer or a mixture of said polymers, wherein said polymer comprises polymer units derived from maleic anhydride and polymer units derived from one or more 1-alkenes at a molar ratio of between about 0.4 and 1.3 polymer units derived from one or more 1-alkene monomers per polymer unit derived from maleic anhydride, the 1 -alkene content of said polymer consisting essentially of between (a) 100 and 80 mol percent of at least one 1 -alkene containing 4 to 12 carbon atoms and (b) 0 to 20 mol percent of at least one 1 -alkene containing 3 or 14 to 24 carbon atoms, said composition being effective to impart resistance to staining of said substrate by an acid dye.
Dependencies are inferred from the claim text.