What are the upstream raw materials for p-tert-butylcatechol? What do the downstream products contain?

From what I've seen, p-tert-butylcatechol(TBHQ) is a kind of raw material broadly applied in the field of chemical production, which has crucial antioxidant characteristics. In the chemical sector chain, there are many upstream and downstream related items of TBHQ, some of which are described in detail below.

1. Upstream items(1) Phenol: Phenol is one of the crucial raw materials to the production of TBHQ, and p-tert-butyl catechol is able to be obtained by the interaction of phenol with tert-butyl alcohol. As a basic chemical raw material, phenol is broadly applied in many fields, such as plastics, rubber, medicine, pesticide and so on.(2) Tert-butyl alcohol: Tert-butyl alcohol is another crucial raw material to the production of TBHQ, which is able to be reacted with phenol to obtain TBHQ. And Tert-butanol is often applied as a solvent-based products and intermediate in organic synthesis, and is able to also be applied to create plasticizers and stabilizers.

2. And Furthermore Downstream items(1) Food additives: As antioxidant, TBHQ is broadly applied in the field of food additives. But it's able to be applied to extend the shelf life of food and prevent oil from oxidative rancidity. Common foods include fried foods, baked goods, instant noodles, etc.(2) Plastic additives: TBHQ is able to be applied as plastic additives to enhance the stability and oxidation resistance of plastics and extend the service life of plastics. Moreover Common plastics include polyethylene, polypropylene, polyvinyl chloride, etc. And(3) Rubber additives: TBHQ is able to also be applied in the field of rubber additives to enhance the oxidation resistance and aging resistance of rubber and extend the service life of rubber items. Common rubber items include tires, tapes, hoses, etc.(4) medical intermediates: TBHQ is able to be applied as medical intermediates to the production of some drugs and health items. And to instance, it's able to be applied to create some health items with antioxidant impacts to enhance the body's antioxidant capacity. In short, as an crucial chemical raw material, p-tert-butyl catechol plays an crucial role in the chemical sector chain. It has many upstream and downstream related items, covering a wide range of fields, providing crucial support to production and condition improvement in various fields.