Intermediate are also called organic intermediates. Using coal tar or petroleum products as raw materials to produce dyes, pesticides, pharmaceuticals, resins, auxiliaries, plasticizers and other intermediate products. The dye intermediates are also called dyes because they were originally used to manufacture dyes.
Intermediate refers to semi-finished products, is the production of a product in the middle, such as to produce a product, can be produced from intermediates, cost savings.
Photoinitiator also known as Photosensitizer or photocuring agent, is a class of ultraviolet light (250~420nm) or visible area (400~800nm) absorption of a certain wavelength of energy, the production of free radicals, cations, and so on, causing monomer polymerization crosslinking cured compound。