Disposable vinyl acetate ethylene glove

Abstract

A disposable glove has a thickness of 0.03-0.12 mm, tensile strength of at least 14 Mpa, and elongation of at least 350%. The disposable glove is made by dip-coagulating a glove former with a water-based latex compound consisting of or comprising a base latex which is a vinyl acetate ethylene latex or a blend of vinyl acetate ethylene latex and carboxylated acrylonitrile butadiene latex, a pH adjuster, an external crosslinker, and a process additive.

1 . A disposable glove made by dip-coagulating a water-based latex compound comprising the composition of
 a) a base latex,   b) an external crosslinker,   c) a pH adjuster,   d) a process additive,   wherein the disposable glove has a thickness of 0.03-0.12 mm, tensile strength of no less than 14 Mpa, elongation of no less than 350%.   
     
     
         2 . The disposable glove according to  claim 1 , wherein the base latex comprises a vinyl acetate ethylene latex. 
     
     
         3 . The disposable glove according to  claim 1 , wherein the base latex is a blend of vinyl acetate ethylene latex with less than 50% of a carboxylated acrylonitrile butadiene latex by weight of the total latex solid content. 
     
     
         4 . The disposable glove according to  claim 2 , wherein the vinyl acetate ethylene latex has a Tg of lower than 0° C., and the vinyl acetate ethylene latex comprises 52-88% of vinyl acetate by weight of the total monomer content, 10-40% of ethylene by weight of the total monomer content, 2-8% of crosslinkable functional group monomer by weight of the total monomer content, and 1-8% emulsifying agent by weight of the total copolymer content. 
     
     
         5 . The disposable glove according to  claim 4 , wherein the crosslinkable functional group monomer is an ethylenically unsaturated monomer comprising at least one or more carboxyl, vinyl, and epoxy groups, the crosslinkable functional group monomer is selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic anhydride, styrenesulfonic acid, ethenylphosphonic acid, allylglycidyl ether, glycidyl methacrylate, methacryloyl glycidyl ether, ethyleneglycol dimethacrylate, diethyleneglycol dimethacrylate, triethyleneglycol dimethacrylate, 1,3-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, 2,5-hexanediol dimethacrylate, 2,4-pentanediol diacrylate, 2,4-pentanediol dimethacrylate, dipropyleneglycol diacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, and a combination thereof. 
     
     
         6 . The disposable glove according to  claim 4 , wherein the emulsifying agent comprises an anionic surfactant selected from the group consisting of ammonium lauryl sulfate, sodium lauryl sulfate, sodium lauryl sarcosinate, sodium myreth sulfate, sodium pareth sulfate, sodium decyl sulfate, sodium N-lauroyl-N-methyltaurate, sodium tetradecyl sulfate, sodium dodecylbenzenesulfonate, sodium cetyl sulfate, sodium oleyl sulfate, sodium sulfosuccinate or their mixtures, and optionally with an additional amount of nonionic surfactant or protect colloid selected from the group consisting of fatty alcohol ethoxylate, alkyl phenol ethoxylate, fatty acid ethoxylate, sorbitan fatty acid ester, glycerol fatty acid ester, polyethylene glycol, polyvinyl alcohol, hydroxyethyl cellulose, and a combination thereof. 
     
     
         7 . The disposable glove according to  claim 1 , wherein the external crosslinker is in an amount of 0.5-4.0% by weight to the total latex solid content, and the external crosslinker is selected from the group consisting of sulfur, accelerator, zinc oxide, aluminum oxide, sodium aluminate, aluminum hydroxide, adipic acid, lactic acid, oxalic acid, citric acid, glyceric acid, glycolic acid, gluconic acid, maleic acid, maleic anhydride, sodium citrate, sodium gluconate, polyethylene oxide, polyethylene glycol, glycerine, maltitol, sorbitol, xylitol, erythritol, glyoxal, glutaraldehyde, ammonium zirconium carbonate, potassium zirconium carbonate, ammonium zirconium lactate, polyamide epichlorohydrin, carbodiimide, and a combination thereof. 
     
     
         8 . The disposable glove according to  claim 1 , wherein the pH adjuster is selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, sodium acetate, potassium bicarbonate, potassium citrate, potassium acid phosphate, and a combination thereof, and the water-based latex compound has a pH in a range of 7.0-11.0. 
     
     
         9 . The disposable glove according to  claim 1 , wherein the process additive is selected from the group consisting of antifoam agent, biocide agent, antioxidant, dispersing agent, emulsifying agent, thickener, wax, titanium dioxide, filler, color pigment, and a combination thereof. 
     
     
         10 . A method for making the disposable glove according to  claim 1 , comprising:
 a) dipping a glove former with a calcium nitrate solution as a coagulant agent and then dry it,   b) dipping and coagulating the vinyl acetate ethylene latex compound to form a solid film and then dry the solid film,   c) raising the solid film with warm water,   d) rolling the up-portion of the solid film into a bead,   e) curing a resulting glove in a hot-air oven at a temperature of about 100-130° C. for 15-25 minutes,   f) chlorinating the resulting glove for de-tacky,   g) stripping the disposable glove from the glove former.   
     
     
         11 . The disposable glove according to  claim 1 , wherein the disposable glove contains sulfur, accelerator, and zinc oxide. 
     
     
         12 . The disposable glove according to  claim 1 , wherein the disposable glove is free of sulfur and accelerator. 
     
     
         13 . The disposable glove according to  claim 1 , wherein the disposable glove is free of sulfur, accelerator, and zinc oxide. 
     
     
         14 . The disposable glove according to  claim 3 , wherein the vinyl acetate ethylene latex has a Tg of lower than 0° C., and the vinyl acetate ethylene latex comprises 52-88% of vinyl acetate by weight of the total monomer content, 10-40% of ethylene by weight of the total monomer content, 2-8% of crosslinkable functional group monomer by weight of the total monomer content, and 1-8% emulsifying agent by weight of the total copolymer content. 
     
     
         15 . The disposable glove according to  claim 7 , wherein the disposable glove contains sulfur, accelerator, and zinc oxide. 
     
     
         16 . The disposable glove according to  claim 7 , wherein the disposable glove is free of sulfur and accelerator. 
     
     
         17 . The disposable glove according to  claim 7 , wherein the disposable glove is free of sulfur, accelerator, and zinc oxide.