Finishes for textiles, leather, paper and mineral substrates comprising mixtures of fluorine-containing copolymers and aqueous dispersions prepared therefrom are characterised by the fluorine content of the mixture, based on the total weight of the copolymers, which is 25-40% by weight. The fluorine-...
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Classify whether fluorine is a pure substance, heterogeneous mixture, or a solution. A homogeneous mixture of two substances is a a. colloid. b. suspension. c. solution. d. compound. Consider a uniform shiny yellow-orange solid that produces two distinc...
aPreparation of Ketones from the Esters. – A mixture of 100 ml. of 40% sulfuric acid and 15-30g of the fluorine-containing acetoacetic ester was refluxed for 24 hours. 酮的准备从酯类。 - 100机器语言混合物。 40% fluorine-containing乙酰乙酸的酯类的硫酸和15-30g被循环了加热24个小时。[transla...
Journal of Fluorine Chemistry, 2004, 123(4):233-236. [1] Zhang W, Ma D, Liu X, et al. Perfluorotributylamine as a probe molecule for distinguishing internal and external acidic sites in zeolites by high-resolution 1H MAS NMR spectroscopy[J]. Chemical Communications, 1999(12):1091-1092....
To evaluate its potential as a ligand discovery tool, we compare a newly developed 1D-protein-observed fluorine NMR (PrOF NMR) screening method with the well-characterized ligand-observed 1H CPMG NMR screen. We selected the first bromodomain of Brd4 as a model system to benchmark PrOF NMR beca...
Element number 17 in the periodic table, chlorine is one of a group of elements that share similar chemical properties known as the halogens, with the other members being fluorine, bromine, iodine and astatine. The gas dissolves in water, forming a mixture of hypochlorous and hydrochloric acids...
aPreparation of Ketones from the Esters. – A mixture of 100 ml. of 40% sulfuric acid and 15-30g of the fluorine-containing acetoacetic ester was refluxed for 24 hours. 酮的准备从酯类。 - 100机器语言混合物。 40% fluorine-containing乙酰乙酸的酯类的硫酸和15-30g被循环了加热24个小时。 [...
producing a polyol mixture are fluorine-modified with a free hydroxyl group or the production of polyurethane prepolymers that are fluorine-modified with hydroxyl groups and free amino groups and / or or a) free isocyanate groups (binder), and b) a whole production of polyurethane resins are ...
A small subset of elements -- helium, neon, argon, krypton, xenon and radon -- are known asnoble or inert gasesand don't readily bond with other elements to form compounds. However, elements such as oxygen, chlorine and fluorine readily combine with other elements to form compounds. ...