Polyethylene Terephthalate

Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

polyethylene terephthalate

[¦päl·ē′eth·ə‚lēn ‚ter·ə′tha‚lāt]
(organic chemistry)
A thermoplastic polyester resin made from ethylene glycol and terephthalic acid; melts at 265°C; used to make films or fibers. Abbreviated PET.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Polyethylene Terephthalate


a polyester produced by polycondensation of terephthalic acid or its dimethyl ether with ethylene glycol.

Polyethylene terephthalate is a white, odorless solid with molecular weight 20,000–40,000; the maximum crystallinity of unoriented polyethylene terephthalate is 40–45 percent, and of the oriented variety, 60–65 percent; density, 1.38–1.40 g/cm3(20°C); melting point, 255°-265°C; softening point, 245°-248°C.

Polyethylene terephthalate is insoluble in water and organic solvents and is relatively resistant to dilute acid solutions, such as 70-percent H2SO4, 5-percent HCl, or 30-percent CH3COOH, and to cold solutions of alkalies and bleaching agents, for example, sodium hypochlorite or hydrogen peroxide. It hydrolyzes under the action of alkaline solutions at temperatures above 100°C and, at 200°C, even under the action of water.

Polyethylene terephthalate has high strength and resistance to abrasion and repeated tensile and bending stress, low hygro-scopicity (moisture content, 0.4–0.5 at 20°C and 60 percent relative humidity), and a working temperature range of –60° to 170°C. It is a good dielectric (loss tangent, 0.013–0.015 at 1 megahertz) and is relatively resistant to light, X rays, and γ-rays.

Polyethylene terephthalate is processed mainly into fibers and films, and also into various molded products, such as radio components and chemical equipment. World production of polyethylene terephthalate in 1973 was about 3.5 million tons.


See references under


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The author is employed as the Executive Director of the PET Resin Association, the industry association representing North American producers of polyethylene terephthalate.
"PLA used in bottles would displace bottles made from PET (polyethylene terephthalate), and there is a thriving recycling system for PET that could be disrupted," Susan Hubbard, CEO of the nonprofit Eureka Recycling, Minneapolis, says.
Polyester, for example, is made from a polymer called polyethylene terephthalate (PET), which can be molded into soda bottles or drawn out into long, thin threads.
Tokyo, Japan, Sept 8, 2006 - (JCN) - Toray Industries announced September 8 that it has developed a new optical polyethylene terephthalate (PET) film for liquid crystal display (LCD) backlight, combining multiple optical functions.
By 2010, polyethylene terephthalate (PET) will usurp high density polyethylene (HDPE) as the dominant plastic container resin due to robust growth in the bottled water market and increasing usage in other applications like food and household chemicals.
Antimony is used in the manufacturer of polyethylene terephthalate bottles.
Most beverage containers sold in the United States are made from polyethylene terephthalate (PET).
M&G is in fact building a polyethylene terephthalate (PET) plant and has no plans to construct a polyethylene plant in the area.
The advanced tape coating technology is supported by a new Super polyethylene terephthalate (S-PET) base film, a super-tensilized (pre-stretched) version of the PET base film used in SDLTtape 1 media.
It's made of DuPont's Rynite polyethylene terephthalate (PET) resin which can withstand the 350[degrees] e-coat oven temperatures necessary for body-in-white use.
According to KNS, the Japanese brewer will use a proprietary polyethylene terephthalate or PET bottle design.

Full browser ?