Synthesis of wholly aromatic polyesters by the direct polycondensation reaction of hydroxybenzoic acids with trivalent phosphorus compounds
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چکیده
منابع مشابه
comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
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چکیده ندارد.
Reaction of Trivalent Organophosphorus Compounds with Selenium
Over the years, evidence has been accumulating [1, 2] that selenium is an essential nutrient in animals, preventing various serious deficiency diseases. On the other hand, no such firm proof for the need of selenium in human nutrition has been established, although several instances of beneficial effects as a result of selenium supplementation of human diet have been reported [3-5]. Although va...
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ژورنال
عنوان ژورنال: Journal of Polymer Science: Polymer Chemistry Edition
سال: 1980
ISSN: 0360-6376,1542-9369
DOI: 10.1002/pol.1980.170180912