Formaldehyde-free binder composition
AssigneeWacker Chemie AG
InventorsHeimo Wölfle, Florian Bauers, Holger Poths
Life of this patent
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Abstract
An aqueous binder composition. The aqueous binder composition is obtainable by radically initiated polymerization of vinyl acetate and ethylene, in the presence of polyvinyl alcohol in an aqueous medium, wherein (a) 50 to 94 wt % of vinyl acetate, (b) 5 to 40 wt % of ethylene, (c) 0.2 to 5 wt % of acrylamide and/or methacrylamide, and (d) 0.2 to 5 wt % of maleic anhydride and/or maleic acid are copolymerized in the presence of a polyvinyl alcohol having a degree of hydrolysis of 80 to 99 mol %. The amounts in wt % are each based on the total weight of the comonomers and add up in each case to 100 wt %.
Claims19
An aqueous binder composition for fiber binding, comprising:
- wherein the aqueous binder composition is obtainable by radically initiated polymerization of comonomers in the presence of polyvinyl alcohol in an aqueous medium;
- wherein the comonomers used within the aqueous binder composition are consisting of
- a) 50 to 94 wt % of vinyl acetate,
- b) 5 to 40 wt % of ethylene,
- c) 0.2 to 5 wt % of acrylamide and/or methacrylamide, and
- d) 0.2 to 5 wt % of maleic anhydride and/or maleic acid;
- wherein the comonomers are copolymerized in the presence of a polyvinyl alcohol having a degree of hydrolysis of 80 to 99 mol %;
- and
- wherein the amounts in wt % are each based on the total weight of the comonomers and add up in each case to 100 wt %.
A textile sheet product, comprising:
- an aqueous binder composition that is obtainable by radically initiated polymerization of comonomers in the presence of polyvinyl alcohol in an aqueous medium;
- wherein the comonomers used within the aqueous binder composition are consisting of
- a) 50 to 94 wt % of vinyl acetate,
- b) 5 to 40 wt % of ethylene,
- c) 0.2 to 5 wt % of acrylamide and/or methacrylamide, and
- d) 0.2 to 5 wt % of maleic anhydride and/or maleic acid;
- wherein the comonomers are copolymerized in the presence of a polyvinyl alcohol having a degree of hydrolysis of 80 to 99 mol %;
- and
- wherein the amounts in wt % are each based on the total weight of the comonomers and add up in each case to 100 wt %.
Dependencies are inferred from the claim text.