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US 7,119,236 B2Granted
Method of preparing alkoxylation catalysts and their use in alkoxylation processes
AssigneeHarcros Chemicals Inc.
InventorsUpali Peter Weerasooriya, James Lyle Bennett, Peter Paul Radford
Life of this patent
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Abstract
A process for preparing an alkoxylation catalyst suitable for alkoxylating compounds that includes mixing a calcium-containing compound in a dispersing medium having a boiling point less that 160° C. with a carboxylic acid and an inorganic acid or anhydride.
Claims53
A process for preparing an alkoxylation catalyst comprising:
- admixing a volatile dispersing medium consisting essentially of media having a boiling point less than 160° C. and consisting essentially of one or more
- branched or straight chain alcohols,
- volatile esters,
- volatile ethers selected from the group consisting of dimethyl ether, diethyl ether, dimethoxy ethane, diethoxymethane, dibutylether, and isopropyl ether, or
- volatile aldehydes and ketones,
- and a calcium-containing compound that is at least partially dispersible in said dispersing medium and a carboxylic acid or anhydride having from about 4 to about 15 carbon atoms, with the mole ratio of calcium to said carboxylic acid or anhydride being from about 15:1 to 1:1, to produce a calcium-containing composition.
3 more elements
A process for preparing an alkoxylation catalyst comprising:
- admixing a volatile dispersing medium consisting of media having a boiling point less than 160° C. and consisting of one or more
- branched or straight chain alcohols,
- volatile esters,
- volatile ethers selected from the group consisting of dimethyl ether, diethyl ether, dimethoxy ethane, diethoxymethane, dibutylether, and isopropyl ether, or
- volatile aldehydes and ketones,
- and a calcium-containing compound that is at least partially dispersible in said dispersing medium and a carboxylic acid or anhydride having from about 4 to about 15 carbon atoms, the mole ratio of calcium to said carboxylic acid or anhydride being from about 15:1 to 1:1, to produce a calcium-containing composition.
3 more elements
An alkoxylation process comprising:
- forming an alkoxylation catalyst by admixing a volatile dispersing medium having a boiling point below about 160° C. and consisting essentially of one or more
- branched or straight chain alcohols,
- volatile esters,
- volatile ethers selected from the group consisting of dimethyl ether, diethyl ether, dimethoxy ethane, diethoxymethane, dibutylether, and isopropyl ether, or
- volatile aldehydes and ketones,
- and a calcium-containing compound that is at least partially dispersible in said volatile dispersing medium, and a carboxylic acid or anhydride having from about 4 to about 15 carbon atoms, with the mole ratio of calcium to said carboxylic acid or anhydride being from about 15:1 to 1:1, to produce a calcium-containing composition having titratable alkalinity;
- and
- adding an amount of inorganic acid or anhydride to produce a partially neutralized calcium-containing alkoxylation catalyst;
- and
- reacting, in the presence of said alkoxylation catalyst, a reactant selected from the group consisting of alcohols, phenols, esters, glycerides, carboxylic acids, amides, and amines and mixtures thereof and an alkylene oxide under alkoxylation conditions to produce an alkoxylated derivative of said reactant.
7 more elements
Dependencies are inferred from the claim text.