US Patent:
20050059782, Mar 17, 2005
Inventors:
Kevin Andrist - Racine WI, US
John Blasko - Racine WI, US
Glenn Calhoun - Racine WI, US
Frederick Hansen - Union Grove WI, US
Dean Hellwig - Racine WI, US
Kurt Hessenius - Sturtevant WI, US
Steven Hurley - Racine WI, US
D. Jayasuriya - Racine WI, US
Matthew Lee - Boonville IN, US
Stephen Maccani - Racine WI, US
H. Mills - Racine WI, US
Gregory Peterson - Franksville WI, US
Paul Sandvick - Racine WI, US
Dennis Wilson - Kenosha WI, US
John Wiruth - Racine WI, US
International Classification:
C08F008/14
US Classification:
525330100, 525384000, 524560000, 524561000, 524562000, 526075000, 526271000, 526317100, 526318100, 526318300
Abstract:
A continuous bulk polymerization and esterification process includes continuously charging into a reaction zone at least one ethylenically unsaturated acid-functional monomer and at least one linear or branched chain alkanol having greater than 11 carbon atoms. The process includes maintaining a flow rate through the reaction zone sufficient to provide an average residence time of less than 60 minutes and maintaining a temperature in the reaction zone sufficient to produce a polymeric product incorporating at least some of the alkanol as an ester of the polymerized ethylenically unsaturated acid-functional monomer. The polymeric product is used in various processes to produce water-based compositions including emulsions and dispersions such as oil emulsions, wax dispersions, pigment dispersions, surfactants and coatings which contain the polymeric product. A polymeric surfactant includes at least one ethylenically unsaturated acid-functional monomer which has been radically incorporated into the polymeric surfactant and at least one ester of the incorporated ethylenically unsaturated acid-functional monomer which has a linear or branched chain alkyl group with greater than 11 carbon atoms. The molar critical micelle concentration of the polymeric surfactant is less than 1.0×10moles/liter. Aqueous 2 percent solutions of certain polymeric surfactants have a surface tension of less than 45 mN/m at 30 C. and exhibit a decrease in surface tension of at least 5 mN/m as the temperature warms from 30 C. to 50 C.