Water based polyurethane is a kind of block copolymer containing soft segment and hard segment. The soft segment is composed of oligomer polyols, and the hard segment is composed of polyisocyanate and chain extender. It has excellent wear resistance, oil resistance, low temperature resistance, aging resistance and chemical resistance.At present, the water based polyurethane emulsion on the market is mainly used for leather, adhesives and coatings, and its crosslinked solidifiers are mainly attached to fabrics and rubber and other surfaces to play the role of surface modification or bonding.Generally speaking, the research of polyurethane latex products mainly focuses on a single property such as flexibility and adhesion. However, when polyurethane latex products are used, the comprehensive properties including tensile strength, elongation at break, permanent deformation at break and tear strength are very high.

Generally speaking, the research of polyurethane latex products mainly focuses on a single property such as flexibility and adhesion. However, when polyurethane latex products are used, the comprehensive properties including tensile strength, elongation at break, permanent deformation at break and tear strength are very high.

Latex products are widely used in the national economy, according to incomplete statistics, different types and different specifications of latex products up to more than 40 thousand, common latex products are condoms, gloves, rubber hose, toy balloons and sponge products, etc., the main raw material for the preparation of latex products is natural latex. Natural latex products have the advantages of good elasticity and flexibility, but there are the following four deficiencies.

(1)The heterologous protein in natural latex products will make some people allergic;

(2)Natural latex products in the vulcanization process will produce carcinogenic N-nitrosamines;

(3)Poor densification of natural latex products and insufficient virus isolation effect will lead to the risk of infection of users. Some studies have shown that natural latex medical surgical gloves cannot prevent the transmission of hepatitis B virus during surgery.

(4)The aging resistance of natural latex products is insufficient. Heat, oxygen, light, acid-base compounds and variable metal ions will greatly accelerate the aging of natural latex products, and then make it lose its performance.

Waterborne polyurethane latex products can effectively make up for the shortage of conventional natural latex products. Waterborne polyurethane latex products have good biocompatibility and virus barrier properties. Waterborne polyurethane latex is an ideal material to replace natural latex in latex products. The raw materials of waterborne polyurethane latex products, natural latex products and other synthetic latex products belong to ionic type, which can be prepared by the universal latex product molding process.

Sinograce Chemical production for know polyurethane condoms polyurethane emulsion, as well as polyurethane gloves of water-based polyurethane emulsion, you are welcome to need polyurethane emulsion customers to consult and buy.