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US 9,174,923 B2Granted
Alkyl lactyllactate solvent compositions
AssigneeStepan Company
InventorsDavid R Allen, John C Hutchison, Christopher D Smith, Jacqueline M Pytel
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Abstract
Alkyl lactyllactate and alkoxylated alkyl lactyllactate compounds that are useful as solvents in a variety of applications are disclosed. The compounds are derived from a hydroxyl containing compound and a lactide or lactic acid source that has a specific chirality. The alkyl lactyllactate and alkoxylated alkyl lactyllactate compounds are particularly suitable for use as solvents in applications requiring cold tolerance performance without inclusion of additional volatile components.
Claims14
A solvent composition comprising:
- at least one alkyl lactyllactate reaction product comprising alkyl lactyllactate of the following general structure:
- wherein, R is an alkyl group or alkoxylated alkyl group derived from a hydroxyl containing compound and contains about six to about eighteen carbon atoms;
- and
- wherein the alkyl lactyllactate reaction product is derived from an L-lactide or L lactic acid source;
- at least one alkyl ether sulfate comprising about six to about 10 carbon atoms or a salt thereof, wherein the alkyl ether sulfate or a salt thereof comprises more than 40% by weight of the composition;
- and
- optionally at least one additive,
- the composition has a pour point that is lower than the pour point of a composition not containing or incorporating the alkyl lactyllactate reaction product.
5 more elements
A solvent composition comprising:
- at least one alkyl lactyllactate reaction product comprising an alkyl lactyllactate of the following general structure:
- wherein, R is an alkyl group or alkoxylated alkyl group derived from a hydroxy containing compound and contains about six to about eighteen carbon atoms;
- wherein the alkyl lactyllactate is derived from a meso-, racemic, or mixture thereof lactide or lactic acid source;
- at least one alkyl ether sulfate comprising about six to about 10 carbon atoms or a salt thereof, wherein the alkyl ether sulfate or a salt thereof comprises more than 40% by weight of the composition;
- and
- optionally at least one additive,
- the composition has a pour point that is lower than the pour point of a composition not containing or incorporating the alkyl lactyllactate reaction product.
4 more elements
Dependencies are inferred from the claim text.