Whiter & brighter - Optical Brightening Agents

摘要

Optical brightener, Optical Brightening Agent (OBA), Fluorescent Brightening Agent (FBA) or Fluorescent Whitening Agent (FWA) is a compound which, when applied to a textile material, absorbs the short wavelength electromagnetic radiation (300-400 nm) which is invisible to the human eye, and converts it into visible light of longer wavelength (400-500 nm), which is emitted either as violet, pure blue or greenish blue.