Gloves with a silicone impregnated cross-linked polyurethane inner coating
AssigneeAllegiance Corporation
InventorYun-Siung Tony Yeh
Life of this patent
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Abstract
Powder-free natural rubber and synthetic elastomer gloves having an inner coating of a cross-linked polyurethane impregnated with silicone and their method of manufacture are described. The gloves exhibit good grippability, good donnability as measured by their wet and dry coefficient of friction, tensile strength, elongation to break and stress at 500% modulus.
Claims21
A powder-free elastomeric glove having a coating on an internal surface of the glove, the coating comprising a crosslinked anionic polyurethane impregnated with silicone wherein the glove has a tensile strength of greater than about 1300 psi and a dry kinetic coefficient of friction on the internal surface of the glove less than about 0.5.
A process for making a powder-free elastomeric article having a coating comprising a crosslinked anionic polyurethane impregnated with silicone on an internal surface of the article, comprising the steps of:
- (a) dipping a former into a coagulant dispersion to deposit a coagulant layer onto the former;
- (b) drying the former with the deposited coagulant layer;
- (c) dipping the former with the deposited coagulant layer into an elastomer to produce a second layer comprising coagulated elastomer thereon;
- (d) dipping the second layer of coagulated elastomer into a powder-free dispersion comprised of polyurethane dispersion, wetting agent, silicone emulsion, crosslinker, stablizers and water to form a coating on the second layer;
- (e) curing the layers and the coating on the former;
- (f) stripping the article from the former;
- (g) treating the article to remove powder;
- and
- (h) drying the article.
A process for making a powder-free elastomeric article having a coating comprising a crosslinked anionic polyurethane impregnated with silicone on an internal surface of the article, comprising the steps of:
- (a) dipping a former into a coagulant dispersion to deposit a coagulant layer onto the former;
- (b) drying the former with the deposited coagulant layer;
- (c) dipping the former with the deposited coagulant layer into an elastomer to produce a second layer comprising coagulated elastomer thereon;
- (d) dipping the second layer of coagulated elastomer into a powder-free dispersion comprising polyurethane dispersion, wetting agent, silicone emulstion, crosslinker, stabilizers and water to form a coating on the second layer;
- (e) curing the layers and the coating on the former;
- (f) stripping the article from the former;
- (g) turning the article so that the coated side of the article is on the exterior of the article;
- (h) treating the article to remove powder
- (i) drying the article;
- (j) turning the article so that the coated side of the article is on the interior of the article;
- and
- (k) drying the article.
Dependencies are inferred from the claim text.