HIGH-ELASTICITY POLYURETHANE MATERIAL
First Claim
1. A method of producing a polyurethane material comprising:
- combining a polyether diol and a polyisocyanate;
causing an addition polymerization reaction to occur, thereby generating a macromolecular polyurethane pre-polymer;
terminating the addition polymerization reaction;
end capping the polymerization reaction product, thereby forming a functional ultra-high molecular weight polyol;
combining the functional ultra-high molecular weight polyol with a hydrophilic group-containing polyether diol;
adding a chain extender; and
generating a high-elasticity polyurethane glove material.
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Abstract
A method and composition for preparation of a high-elasticity polyurethane glove material and glove. The method for practicing the invention generally includes the steps of preparing an ultra-high molecular weight polyol, preparing a high-elasticity polyurethane glove material, and preparing a glove by dipping and forming. A high molecular weight polyether polyol is used in conjunction with polyurethane to increase resilience to a degree comparable with rubber material. Conventional polyurethane materials lack flexibility and do not allow for significant elongation or rebound. The material of the present disclosure may be used for medical applications and modifies polyurethane material to achieve properties similar to rubber materials. The polyurethane material resulting from the method according to the present disclosure has excellent biocompatibility and may be widely used in the medical field. The overall performance of the glove of the present disclosure improved over natural latex gloves or nitrile gloves.
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Citations
20 Claims
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1. A method of producing a polyurethane material comprising:
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combining a polyether diol and a polyisocyanate; causing an addition polymerization reaction to occur, thereby generating a macromolecular polyurethane pre-polymer; terminating the addition polymerization reaction; end capping the polymerization reaction product, thereby forming a functional ultra-high molecular weight polyol; combining the functional ultra-high molecular weight polyol with a hydrophilic group-containing polyether diol; adding a chain extender; and generating a high-elasticity polyurethane glove material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for manufacturing a polyurethane glove emulsion, comprising:
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combining a polyether diol and a polyisocyanate; adding a catalyst to promote an addition polymerization reaction, thereby generating a macromolecular polyurethane pre-polymer; terminating the addition polymerization reaction; end capping a polymerization reaction product, thereby forming a functional ultra-high molecular weight polyol; combining the functional ultra-high molecular weight polyol with a hydrophilic group-containing polyether diol; adding a chain extender; and allowing a reaction to occur in order to generate a high-elasticity polyurethane material; combining the high elasticity polyurethane material with a surfactant; and adding water to generate an operative high elasticity polyurethane emulsion. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for manufacturing a polyurethane glove emulsion, comprising:
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combining a polyether diol and a polyisocyanate; adding a catalyst to promote an addition polymerization reaction, thereby generating a macromolecular polyurethane pre-polymer; terminating the addition polymerization reaction; end capping the polymerization reaction product, thereby forming a functional ultra-high molecular weight polyol; combining the functional ultra-high molecular weight polyol with a hydrophilic group-containing polyether diol; adding a chain extender; and allowing a reaction to occur in order to generate a high-elasticity polyurethane glove material; combining the high elasticity polyurethane material with a surfactant; and adding water to generate an operative high elasticity polyurethane emulsion; drying a glove mold impregnated with a coagulating agent; immersing the glove mold in the operative high elasticity polyurethane emulsion;
removing the glove mold from the operative high elasticity polyurethane emulsion to obtain a coated glove mold;drying the coated glove mold; and
curling and stripping to produce a glove. - View Dependent Claims (20)
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Specification