PU(Polyurethane)
Polyurethane is a polymer composed of organic units joined by carbamate (urethane) links. Polyurethane polymers are traditionally and most commonly formed by reacting a di- or poly-isocyanate with a polyol. Both the isocyanates and polyols used to make polyurethane contain, on average, two or more functional groups per molecule. PU gloves are widely used in many industries as they have good dustproof properties, brilliant abrasion resistance, and excellent dexterity.
Latex
Latex is a stable dispersion(emulsion) of polymer microparticles in an aqueous medium. It is found in nature, but synthetic latex can be made by polymerizing a monomer such as styrene that has been emulsified with surfactants. It is a complex emulsion consisting of proteins, alkaloids, starches, sugars, starches, sugars, oils tannins, resins, and gums that coagulate on exposure to air. Some people have a serious latex allergy and exposure to latex products such as latex gloves can cause anaphylactic shock. Guayule latex has only 2% of the levels of protein found in Hevea latexes and is being researched as a lower-allergen substitute. Latex gloves have better elasticity and softness than NBR gloves. However, latex gloves have worse abrasion resistance and oil resistance than NBR gloves.
PVC
Polyvinyl chloride, also known as polyvinyl or vinyl, commonly abbreviated PVC, is the world’s third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. PVC comes in two basic forms: rigid (sometimes abbreviated as RPVC) and flexible. The rigid form of PVC is used in construction for pipe and profile applications such as doors and windows. It can be made softer and more flexible by the addition of plasticizers, the most widely used being phthalates. In this form, it is also used in plumbing, electrical cable insulation, imitation, imitation leather, signage, phonograph records, inflatable products, and many applications where it replaces rubber. PVC is chemically resistant to acids, salts, bases, fats, and alcohols.