Phosphate-containing binders for nonwoven goods
AssigneeWacker Chemical Corporation
InventorsChristian Leonard Daniels, Ronald Joseph Pangrazi, Richard Henry Bott
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Abstract
A method of improving the wet tensile strength of a cellulose-containing web includes applying to the web an aqueous binder emulsion and subsequently drying and curing the binder emulsion. The aqueous binder emulsion is prepared by emulsion-polymerizing a monomer mixture comprising vinyl acetate, ethylene, and an olefinically unsaturated crosslinking monomer in the presence of a phosphate ester surfactant wherein the at least one crosslinking monomer comprises a (meth)acrylamide moiety and a cellulose-reactive moiety. The binder emulsion may be applied to a cellulose-containing web to increase wet strength, aid in creping, or both.
Claims13
A method of improving the wet tensile strength of a cellulose-containing web, comprising applying to the web a pigment-free aqueous binder emulsion and subsequently drying and curing the binder emulsion;
- wherein the aqueous binder emulsion is prepared by emulsion polymerizing a monomer mixture comprising vinyl acetate, ethylene, and at least one crosslinking monomer, the polymerization being performed in the presence of at least one phosphate ester surfactant;
- and
- wherein the at least one crosslinking monomer comprises a (meth)acrylamide moiety and a cellulose-reactive moiety.
Dependencies are inferred from the claim text.