Ethyl orthotitanate

Furukawa et al. [274] and Natta cl al. [275,276] succeeded independently in the preparation of crystalline polyacetaldehyde by using some organometallic compounds, such as diethylzinc or triethylaluminium, for the low-temperature polymerisation of acetaldehyde. Metal alkyls and metal alkoxides, e.g. aluminium isopropoxide, zinc ethoxide or ethyl orthotitanate, have also polymerised other aldehydes such as propionaldehyde and trichloroacetaldehyde to give crystalline polymers (Table 9.3) [270,275,277], A highly crystalline isotactic polymer has been obtained from the polymerisation of w-butyraldehyde with triethylaluminium or titanium tetrachloride-triethylaluminium (1 3) catalysts. Combinations of metal alkyl, e.g. diethylzinc, with water [278] or amine [279] appeared to give very efficient catalysts for aldehyde polymerisations. 

EUROTS-1 was synthesized (150g) by hydrothermal treatment of a gel derived from ethyl orthosilicate and ethyl orthotitanate, in the presence of tetrapropyl-ammonium hydroxide as template [31]. Each participating laboratory performed its own calcination (3 h or 16 h at a maximum temperature of 823 K, other conditions being varible). The Ti content was 2.8%, and the calcined product consisted of a single phase of orthorhombic symmetry, with a BET surface area of 435 m2g . Its IR and diffuse reflectance spectra (DRS) have been recorded. The material had the form of small rounded cubes of about 0.15/im size. 

Tetraethyl orthotitanate (Fluka Chemical Corporation), Titanium ethoxide (Aldrich Chemical Company, Inc.) Ethyl alcohol, titanium(4+) salt (8) Ethanol, titanium(4+) salt (9) (3087-36-3)... 

HYDROXY ESTERS Alkyl orthotitanates. Ethyl a-phenylsulfinylacetate. 

Ethyl hexyl titanate Synonyms 2-EHT Tetra-2-ethylhexyl orthotitanate Titanium 2-ethylhexylate Titanium tetraoctoxide Empirical C 2He804Ti... 

Synonyms 2-Ethyl-1-hexanol titanium (4+) salt 1-Hexanol, 2-ethyl-, titanium (4+) salt TEHT Tetrakis (2-ethylhexyl) orthotitanate Titanium ethyl hexoxide Titanium (IV) 2-ethyl hexoxide Classification Organometallic compd. 

Tetrakis (2-ethylhexyl) orthotitanate. See Tetra-2-ethyl hexyl titanate... 

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