Aqueous aromatic urethane elastomer and its preparation method

Abstract

The invention provides an aqueous aromatic urethane elastomer which is made by dispersion of aqueous aromatic urethane elastomer; the dispersion is made by polyurethane prepolymer which is synthesized by whole aromaticdiisocyanate. The invention also provides a Manufacturing method of this elastomer. The glove work made by this invention is easy to pull on or pull off; the handle is fine when dressing. Its resistance's testing value is generally between 108-1010OMEGA, hasing good antistatic property. Furthermore, in the glove technics aspect, it has the superiority of timesaving, laborsaving and spaacesaving, even more saving the energy loss of electric power and gas heating.

Description

technical field [0001] The invention relates to an elastomer, in particular to a water-based aromatic polyurethane elastomer and a manufacturing method thereof. Background technique [0002] Natural latex gloves are one of the most commonly used protective gloves, but the ingredients in latex gloves (such as: protein) may cause allergies or irritant contact dermatitis to contacts, and the chemicals added in the glove production process It can also cause allergic reactions in users. In order to prevent the harm caused by natural latex gloves, there have been many related attempts, such as reducing the amount of natural latex, or preparing gloves without potentially allergenic polymer elastomers, but many polymer elastomer gloves currently known It gives people a wearing feeling different from natural latex gloves. It is usually uncomfortable, not close-fitting, and may be difficult to wear. In addition, the inside of the glove is covered with powder or the surface of the glo...

AI Technical Summary

Problems solved by technology

[0002] Natural latex gloves are one of the most commonly used protective gloves, but the ingredients in latex gloves (such as: protein) may cause allergies or irritant contact dermatitis to contacts, and the chemicals added in the glove production process can also cause allergies

In order to prevent the harm caused by natural latex gloves, there have been many related attempts, such as reducing the amount of natural latex, or preparing gloves without potentially allergenic polymer elastomers, but many polymer elastomer gloves currently known It gives people a wearing feeling different from natural latex gloves. It is usually uncomfortable, not close-fitting, and may be difficult to wear. In addition, the inside of the glove is covered with powder or the surface of the glove is treated with halogen. Although it helps to increase slip, It is easy to wear, but if the powder on the medical gloves enters the wound, it is easy to increase the risk of infection and inflammation of the patient, and the gloves containing powder are not good for electronic industry applications, because the powder is potential for precision electronic equipment. sources of pollution, while treating the surface of gloves with halogen will cause obvious aging phenomena of gloves, such as becoming brittle or fading

[0003] At present, although water-based polyurethane (PU) can properly improve the wearing and powder problems of gloves, it still has its insurmountable shortcomings. Low aliphatic or cycloaliphatic (Cycloaliphatic) diisocyanates such as isophenone diisocyanate (IPDI), hexamethylene diisocyanate (HDI) or diisocyanate Acid 4,4'-dicyclohexylmethane ester (4,4'-Dicyclohexylmethane diisocyanate, H 12 MDI), etc., these diisocyanates are expensive, making the raw material cost of water-based PU much higher than other materials, and the traditional water-based PU after impregnation and coating, because the fusion between water-based PU particles is not good, so in It is easy to crack when it is dried into a film, so that the film after film formation cannot show the original high-functional properties of PU

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