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PP definition: 1. written abbreviation used to show when someone has signed a document for a person who is not…. Learn more.

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar.

2024年12月31日 · Polypropylene (PP) is a type of polyolefin that is slightly harder than polyethylene. It is a commodity plastic with low density and high heat resistance. It finds application in packaging, automotive, consumer goods, medical, cast films, etc. Its chemical formula is (C 3 H 6) n. How is PP produced?

PP, pp or Pp may refer to: Presque partout (almost everywhere), in measure theory and analysis (is always lower case – 'pp'; in English 'ae' is often used instead.) Pierre Poilievre, Conservative politician in Canada.

What does the abbreviation PP stand for? Meaning: pages.

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polypropylene, a synthetic resin built up by the polymerization of propylene. One of the important family of polyolefin resins, polypropylene is molded or extruded into many plastic products in which toughness, flexibility, light weight, and heat resistance are required.

pp is written before a person's name at the bottom of a formal or business letter in order to indicate that they have signed the letter on behalf of the person whose name appears before theirs.