Polyolefins

thumb|140px|The repeating unit within polyethylene in the most stable staggered conformation

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.

A polyolefin is a type of polymer with the general formula (CH2CHR)n where R is an alkyl group. They are usually derived from a small set of simple olefins (alkenes). The most commonly manufactured are polyethylene and polypropylene. More specialized polyolefins include polyisobutylene and polymethylpentene. They are all colorless or white oils or solids. Many copolymers are known, such as polybutene, which derives from a mixture of different butene isomers.

class of polyethylenes

polymer

thumb|Tyvek house wrap Tyvek () is a brand of synthetic flashspun high-density polyethylene fibers. The name Tyvek is a registered trademark of the American multinational chemical company DuPont, which discovered and commercialized Tyvek in the late 1950s and early 1960s.

a chromatographic method in which molecules in solution are separated by their size, and in some cases molecular weight

Polymethylpentene (PMP), also known as poly(4-methyl-1-pentene). It is used for gas-permeable packaging, autoclavable medical and laboratory equipment, microwave components, and cookware. It is commonly called TPX, which is a trademark of Mitsui Chemicals.

type of size exclusion chromatography (SEC)

strong, durable paper-like product manufactured from calcium carbonate bonded with high-density polyethylene

Polybutylene (polybutene-1, poly(1-butene), PB-1) is a polyolefin or saturated polymer with the chemical formula (CH2CH(Et))n. PB-1 is mainly used in piping.

strong polymeric material

chemical compound

polymer

chemical compound

Gefarnate is a drug used for the treatment of gastric ulcers.

closed-cell polyethylene foam made from non-crosslinked, low-density polyethylene (LDPE) resins