Reactive surfactants for freeze-thaw stable emulsion polymers and coatings thereof
AssigneeEthox Chemicals, LLC
InventorCharles F. Palmer, Jr.
Life of this patent
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Abstract
The invention provides aqueous coating composition having freeze thaw stability, comprising: (a) at least one latex polymer derived from at least one monomer and at least one reactive surfactant of the formula R1O—(CH2CHR2O)x—(CH2CH2O)y—(CH2CHR3O)z—R4 where R1 is either alkyl, aryl, alkylaryl, or aralkylaryl of 8-30 carbon atoms, R2 is —CH2OCH2CH═CH2 (AGE); R3 is either H, CH3, or CH2CH3; R4 is H or —SO3M or —PO3M where M is H or K, Na, NH4, NR4, alkanolamine, or other cationic species and x=2-100; y=4-200 and z=0-50.
Claims9
A aqueous coating composition having freeze thaw stability, comprising:
- at least one latex polymer derived from at least one monomer and a combination of a reactive surfactant of the formula:
- where R=CH3 or CH2CH3, n=1, 2, or 3;
- x is 2-10, y is 0-200, and z is 4-200;
- and a surfactant of the formula:
- where n=2, x=20 and M+ is NH4+.
A method for imparting freeze/thaw stability to a latex which method comprises conducting a latex forming polymerization with a surfactant mixture comprising:
- (a) a reactive surfactant of the formula
- where R=CH3 or CH2CH3, n=1, 2, or 3;
- x is 2-10, y is 0-200, and z is 4-200;
- and (b) a surfactant of the formula
- where n=2, x=20 and M+ is NH4+.
A method for imparting freeze/thaw stability to a latex which method comprises conducting a latex forming polymerization with a surfactant mixture comprising:
- (a) a surfactant of the formula
- where R=CH3 or CH2CH3, n=1, 2, or 3;
- x is 2-10, y is 0-200, and z is 4-200;
- Z can be either SO3− or PO32−, and M+ is Na+, K+, NH4+, or an alkanolamine and (b) a surfactant of the formula
- where n=3 and x=10.
Dependencies are inferred from the claim text.