CAS: 14024-64-7; Titanium(Iv) Oxyacetylacetonate

专利信息

专利号:US-5194666-A
优先权日:1992-07-30
标 题 :Process for preparing esters of 3,5,6-trichlorosalicyclic acid
发明人：SEDLAK JOHN A; HIGGINS MARK A; ESSENFELD AMY P
权利人:AMERICAN CYANAMID CO
摘要:An improved process for the synthesis of esters of 3,5,6-trichlorosalicylic acid in quantitative yield comprises reacting the acid with an alcohol under distillation conditions in the presence of a titanium ester or chelate catalyst, whereby byproduct ether formation from the alcohol is suppressed. The process is especially applicable to a process by which salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol and a titanium catalyst to make the ester.

专利号:US-2005187374-A1
优先权日:2004-02-20
标 题:Polyester synthesis with enhanced titanium catalyst composition
发明人：CHEN BIN; DOWLING CONOR M; SESHADRI SRI R
摘要:A catalyst composition for preparing polyesters comprises a titanium compound and one or more catalyst enhancers. The titanium compound may be either a titanyl compound of the formula X m TiOY o or a titanium salt of the formula X m TiY o , where each X is independently selected from the group consisting of H, Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba and ammonium; m=0, 1 or 2; Y is a ligand of the formula C a H b O c , wherein a=1 to 30, b=0 to 60, and c=1 to 10; and o=2, 3, or 4. The catalyst enhancer may be selected from either or both of two classes: 1) compounds selected from the group consisting of oxalate and C1-C26 carboxylate salts of Li, Na, K, Rb, Cs, Be, Ca, Mg, Sr, and Ba; and 2) compounds selected from the group consisting of soluble compounds of Al, Co, Zn, and Sn.