Sizing composition
First Claim
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1. A sizing composition comprising a polyurethane dispersion, said polyurethane dispersion being a reaction product of a prepolymer and a chain extender, said prepolymer being a reaction product of a hydroxylated polymer, said hydroxylated polymer selected from the group consisting of a polyether polyol, a polyester polyol and mixtures thereof, a hydroxylated polyalkadiene, a polyisocyanate, a hydroxylated compound having a pendent acid group and, optionally, an ester of a fatty acid having about 12 to about 20 carbon atoms containing hydroxyl groups;
- a polyolefin wax; and
a coupling agent.
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Abstract
A sizing composition which includes an anionic or cationic polyurethane dispersion, a polyolefin wax and a coupling agent.
32 Citations
18 Claims
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1. A sizing composition comprising a polyurethane dispersion, said polyurethane dispersion being a reaction product of a prepolymer and a chain extender, said prepolymer being a reaction product of a hydroxylated polymer, said hydroxylated polymer selected from the group consisting of a polyether polyol, a polyester polyol and mixtures thereof, a hydroxylated polyalkadiene, a polyisocyanate, a hydroxylated compound having a pendent acid group and, optionally, an ester of a fatty acid having about 12 to about 20 carbon atoms containing hydroxyl groups;
- a polyolefin wax; and
a coupling agent. - View Dependent Claims (3, 4, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- a polyolefin wax; and
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2. A sizing composition comprising a polyurethane dispersion, said polyurethane dispersion being a reaction product of an extended prepolymer, including a hydroxylated polymer selected from the group consisting of a polyether polyol, a polyester polyol and mixtures thereof, a hydroxylated polyalkadiene, a polyisocyanate, a bis(hydroxyalkyl) quaternary ammonium group-containing diol and, optionally, an ester of a fatty acid having about 12 to about 20 carbon atoms containing hydroxyl groups;
- a polyolefin wax; and
a coupling agent. - View Dependent Claims (6, 8, 18)
- a polyolefin wax; and
Specification