Optical Brightening Agent KCB Chemical name 4.4-bis(5-methyl-2-benzoxoazol)-ethylene Structural formula Molecular formula: Molecular weight: Properties: 1. being highly whiteness with small usage. 2. multipurpose used for whitening of polyester fiber and plastic. 3. having a good compatibility and good fastness to light and sublimation. Can be used for high temperature process. Technical conditions: Appearance: greenish yellow powder Melting process: 275~280°C Purity:≥98.0% Fineness(300 mesh):100% Use: mainly be used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process. Package: It is packed in 20Kgs paper board bucket. It can be packed according to the requirement of the user. Note: It needs to be declared that the above data is based on our present knowledge and experience; owing to too many affecting factors, these data cannot be free from their check and test when processing and using the product.
mainly be used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process.