стекло pyrex википедия

According to glass supplier Pulles and Hannique, borosilicate Pyrex is made of Corning 7740 glass, and is equivalent in formulation to 8830 glass sold under the "Duran" brand name. The composition of both Corning 7740 and Schott 8830 is given as 80.6% , 12.6% , 4.2% , 2.2% , 0.04% , 0.1% CaO

Older clear-glass Pyrex manufactured by Corning before 1998, Arc International's Pyrex products, and Pyrex is made of borosilicate glass. According to the , borosilicate Pyrex is composed of (as percentage of weight): 4.0% , 54.0% , 2.8% , 1.1% , 37.7% , and 0.3% .

A clear tempered Pyrex soda-lime glass measuring cup with a blueish color produced by World Kitchen, and a clear borosilicate glass Pyrex measuring cup produced by Corning (right)

Corning divested its consumer products division in 1998, forming the company . Corning discontinued its production of Pyrex products, but still licensed the Pyrex brand to other companies, including World Kitchen, and France-based cookware maker acquired Newell's European business in early 2006., and currently owns rights to the brand in , the and .

In the late 1930s and 1940s, Corning also introduced other products under the Pyrex brand, including opaque for bowls and bakeware, and a line of Pyrex Flameware for stovetop use; this borosilicate glass had a bluish tint caused by the addition of alumino-sulfate. In 1958 an internal design department was started by John B. Ward. He redesigned the Pyrex ovenware and Flameware. Over the years designers such as , Betty Baugh, , , and others have contributed to the design of the line.

The word PYREX is probably a purely arbitrary word which was devised in 1915 as a trade-mark for products manufactured and sold by Corning Glass Works. While some people have thought that it was made up from the pyr and the rex we have always taken the position that no graduate of would be guilty of such a classical hybrid. Actually, we had a number of prior trade-marks ending in the letters ex. One of the first commercial products to be sold under the new mark was a pie plate and in the interests of the letter r was inserted between pie and ex and the whole thing condensed to PYREX.

A Corning executive gave the following account of the of the name "Pyrex":

In 1908, Eugene Sullivan, Director of Research at Corning Glass Works, developed Nonex, a borosilicate low-expansion glass, to reduce breakage in shock-resistant lantern globes and battery jars. Sullivan had learned about Schott's borosilicate glass as a doctoral student in Leipzig, Germany. Jesse Littleton of Corning discovered the cooking potential of borosilicate glass by giving his wife a casserole dish made from a cut-down Nonex battery jar. Corning removed the from Nonex, and developed it as a consumer product. Pyrex made its public debut in 1915 during , positioned as an American-produced alternative to Duran.

Borosilicate glass was first made by German chemist and glass technologist , founder of in 1893, 22 years before Corning produced the Pyrex brand. Schott AG sold the product under the name "Duran."

Corning no longer manufactures or markets Pyrex-branded borosilicate glass kitchenware and bakeware in the US, but Pyrex borosilicate products are still manufactured under license by various companies. , which was spun off from Corning in 1998, licensed the Pyrex brand for their own line of kitchenware productsпІп‚БЂ«differentiated by their use of clear tempered instead of borosilicate.

Pyrex ( as PYREX) is a which was introduced by in 1915 for a line of clear, low-thermal-expansion used for and .

A Pyrex measuring cup manufactured circa 1980, featuring graduations in both metric and U.S. Customary systems.

For the programming language, see .

From Wikipedia, the free encyclopedia

Pyrex - Wikipedia, the free encyclopedia