Articles comprising aqueous dispersions of polyureaurethanes
First Claim
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1. An article made from a polyureaurethane aqueous dispersion;
- said dispersion comprising a water miscible organic solvent and a polyureaurethane comprising a THF copolymer soft segment comprising 25 to 60 percent by weight of ethylene glycol as a comonomer and an aromatic diisocyanate.
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Abstract
Polyurethane particles dispersed in water can be used to make articles of commerce with reduced chance of chemical and biological allergic reaction to skin, and which exhibit improved puncture and tear resistance when compared to gloves made with other materials.
25 Citations
7 Claims
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1. An article made from a polyureaurethane aqueous dispersion;
- said dispersion comprising a water miscible organic solvent and a polyureaurethane comprising a THF copolymer soft segment comprising 25 to 60 percent by weight of ethylene glycol as a comonomer and an aromatic diisocyanate.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A process for producing an article made from a polyureaurethane aqueous dispersion;
- said dispersion comprising a water miscible organic solvent and a polyureaurethane comprising a THF copolymer soft segment comprising 25 to 60 percent by weight of ethylene glycol as a comonomer and an aromatic diisocyanate, comprising the steps;
a) dipping a mold into a coagulant solution and drying at an elevated temperature; b) dipping the coagulant solution-coated mold into an aqueous polyureaurethane dispersion and drying; c) subjecting the coated mold to a salt leaching bath; and drying the coated mold at elevated temperature before stripping the article off of said mold.
- said dispersion comprising a water miscible organic solvent and a polyureaurethane comprising a THF copolymer soft segment comprising 25 to 60 percent by weight of ethylene glycol as a comonomer and an aromatic diisocyanate, comprising the steps;
Specification