Process for preparing alkoxylation catalysts and alkoxylation process
AssigneeCondea Vista Company
InventorsJohn Lin, Upali Weerasooriya, Bruce E. Leach, Steve V. Orsak
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Abstract
A process for preparing an alkoxylation catalyst suitable for alkoxylating compounds such as active hydrogen-containing compounds wherein an alkoxylated alcohol mixture, a calcium-containing compound that is at least partially dispersible in the alkoxylated alcohol mixture, and a carboxylic acid are mixed together to produce a calcium-containing composition having titratable alkalinity, the composition being obtained under conditions to prevent loss of water, the composition being at least partially neutralized with an inorganic acid under conditions to prevent loss of water to produce a partially neutralized calcium-containing catalyst.
Claims16
A process for preparing an alkoxylation catalyst comprising:
- admixing an alkoxylated alcohol mixture, a calcium-containing compound that is at least partially dispersible in said alkoxylated alcohol mixture and a carboxylic acid having from about 4 to about 15 carbon atoms, the mole ratio of calcium to said carboxylic acid being from about 15:1 to 1:1, to produce a calcium-containing composition having titratable alkalinity, said calcium-containing composition being obtained under conditions to prevent loss of water;
- and
- adding an amount of an inorganic acid to neutralize at least 25% of said titratable alkalinity under conditions to prevent loss of water to produce a partially neutralized calcium-containing catalyst.
An alkoxylation process comprising:
- forming an alkoxylation catalyst by admixing an alkoxylated alcohol mixture, a calcium-containing compound that is at least partially dispersible in said alkoxylated alcohol mixture, and a carboxylic acid having from about 4 to about 15 carbon atoms, the mole ratio of calcium to said carboxylic acid being from about 15:1 to 1:1, to produce a calcium-containing composition having titratable alkalinity, said calcium-containing composition being obtained under conditions to prevent loss of water;
- adding an amount of inorganic acid to neutralize at least 25% of said titratable alkalinity under conditions to prevent loss of water to produce a partially neutralized calcium-containing alkoxylation catalyst;
- reacting, in the presence of said alkoxylation catalyst, a reactant selected from the group consisting of compounds having active hydrogen atoms, esters, and mixtures thereof and an alkylene oxide under alkoxylation conditions to produce an alkoxylated derivative of said reactant.
Dependencies are inferred from the claim text.