Bi-modal Guerbet alkoxy sulfate surfactants
OwnerAnthony J. O'Lenick, Jr., Michael Heath +1inventors
InventorsAnthony J. O'Lenick, Jr., Michael Heath, Bobby Viteaux
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Abstract
The present invention relates to specific compositions made by the sulfation of alkoxylated crude guerbet alcohol mixtures that contain between 15% and 50% lower molecular weight alkoxylated alcohols. The lower molecular weight alcohols are the raw material alcohols used to make the guerbet. Sulfated compositions made from this specific bi-modal distribution have unique emulsification properties and experience minimal chromatographic separation when used in downhole applications.
Claims19
A sulfated bi-modal composition, which comprises:
- (a) between 10% and 50% by weight of an emulsifier which conforms to the following structure:
- CH3(CH2)n—O—(CH2CH2O)a(CH2CH(CH3)O)b—(CH2CH2O)c—SO−3M+
- wherein;
- n is an integer ranging from 5 to 19;
- a, b, and c are independently each integers ranging from 0 to 20;
- M is a group needed as a counter ion and selected from the group consisting of Na, K, Ca, Mg, NH4 and HN—(CH2CH2OH)3
- and
- (b) between 90% and 50% of an emulsifier which conforms to the following structure:
- wherein;
- y is an integer ranging from 5 to 19, and is equal to n;
- x is an integer ranging from 3 to 17 with the proviso that x=y+2
- M is a group needed as a counter ion and selected from the group consisting of Na, K, Ca, Mg, NH4 and HN—(CH2CH2OH)3
- a, b, and c are independently each integers ranging from 0 to 20.
A process for making an emulsion, which comprises mixing;
- (1) between 1% and 50% by weight of a water insoluble oil,
- (2) between 98% and 35% water
- and
- (3) between 1% and 15% by weight of sulfated bi-modal emulsifier compositions, which comprises:
- (b) between 10% and 50% by weight of an emulsifier which conforms to the following structure:
- CH3(CH2)n—O—(CH2CH2O)a(CH2CH(CH3)O)b—(CH2CH2O)c—SO−3M+
- wherein;
- n is an integer ranging from 5 to 19;
- a, b, and c are independently each integers ranging from 0 to 20;
- M is a group needed as a counter ion and selected from the group consisting of Na, K, Ca, Mg, NH4 and HN—(CH2CH2OH)3
- and
- (b) between 90% and 50% of an emulsifier which conforms to the following structure:
- wherein;
- y is an integer ranging from 5 to 19, and is equal to n;
- x is an integer ranging from 3 to 17 with the proviso that x=y+2;
- M is a group needed as a counter ion and selected from the group consisting of Na, K, Ca, Mg, NH4 and HN—(CH2CH2OH)3
- a, b, and c are independently each integers ranging from 0 to 20.
Dependencies are inferred from the claim text.