Pitch (resin)

This article is about resin. For other uses, see Pitch (disambiguation).

Natural bitumen pitch, from the tar pit above the McKittrick Oil Field, Kern County, California

Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar,[1] or plants. Pitch produced from petroleum may be called bitumen or asphalt, while plant-derived pitch, a resin, is known as rosin in its solid form. Tar is sometimes used interchangeably with pitch, but generally refers to a more liquid substance derived from coal production, including coal tar, or from plants, as in pine tar.[2]

  1. ^ "Coal-Tar Pitch, High Temperature" (PDF). Archived from the original (PDF) on May 5, 2021. Retrieved June 9, 2014.
  2. ^ "CPC Definition - C10C Working-up Pitch, Asphalt, Bitumen, Tar; Pyroligneous Acid". Classification Resources. United States Patent and Trademark Office. November 2016. Retrieved August 12, 2023.