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Polytetrafluoroethylene is a fluorocarbon solid, as it is a high-molecular-weight polymer consisting wholly of carbon and fluorine.PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons exhibit only small London dispersion forces due to the low electric polarizability of fluorine.
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Patrick Stewart [1] was born in Mirfield in the West Riding of Yorkshire on 13 July 1940, [2] the son of Gladys (née Barrowclough), a weaver and textile worker, and Alfred Stewart (1905–1980), a regimental sergeant major in the British Army Parachute Regiment during the Second World War who later worked as a general labourer and postman. [3]
Excess MEG is distilled off at higher temperature with the aid of vacuum. The second transesterification step proceeds at 270–280 °C, with continuous distillation of MEG as well. [38] The reactions can be summarized as follows: First step C 6 H 4 (CO 2 CH 3) 2 + 2 HOCH 2 CH 2 OH → C 6 H 4 (CO 2 CH 2 CH 2 OH) 2 + 2 CH 3 OH Second step
Edison in 1861. Thomas Edison was born in 1847 in Milan, Ohio, but grew up in Port Huron, Michigan, after the family moved there in 1854. [8] He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in Marshalltown, Nova Scotia) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York).
Massachusetts (/ ˌ m æ s ə ˈ tʃ uː s ɪ t s / ⓘ, /-z ɪ t s / MASS-ə-CHOO-sits, -zits; Massachusett: Muhsachuweesut [məhswatʃəwiːsət]), officially the Commonwealth of Massachusetts, [b] is a state in the New England region of the Northeastern United States.
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