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Encyclopedia > Titanic acid

The chemical compound Titanic acid, Ti(OH)4, is a white weak acid that is a hydrated form of titanium dioxide. It is obtained by decomposing certain titanates. A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ... General Name, Symbol, Number Titanium, Ti, 22 Chemical series transition metals Group, Period, Block 4, 4, d Density, Hardness 4507 kg/m3, 6 Appearance Silvery metallic Atomic properties Atomic weight 47. ... General Name, Symbol, Number Oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16 (VIA), 2, p Density, Hardness 1. ... General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1, s Density, Hardness 0. ... An acid (often represented by the generic formula AH) is typically a water-soluble, sour-tasting chemical compound. ... Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ... Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO2. ... The chemical compound Titanic acid, Ti(OH)4, is a white weak acid that is a hydrated form of titanium dioxide. ...


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Process for the preparation of polyesters - Patent 4131601 (3596 words)
The process according to claim 1 wherein the preformed titanate compound is obtained by reacting the titanic acid ester with the aromatic acid at a molar ratio of from 1 to 2 mols of the aromatic acid per 1 mol of the titanic acid ester.
A titanate compound obtained by reacting a titanic acid ester with an aromatic acid which is included within the polycondensation catalysts of the present invention is preferably used as the ester-exchange catalyst.
The polycondensation catalyst which is used in the present invention is a preformed titanate compound obtained by reacting a titanic acid ester expressed by the formula Ti(OR).sub.4, where R is an alkyl group having from 1 to 5 carbon atoms, with an aromatic tricarboxylic acid having the capacity to form an anhydride.
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