The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2006
Filed:
Jun. 10, 2004
James R. Mcelhanon, Manteca, CA (US);
Blake A. Simmons, San Francisco, CA (US);
Thomas Zifer, Manteca, CA (US);
Gregory M. Jamison, Albuquerque, NM (US);
Douglas A. Loy, Albuquerque, NM (US);
Kamyar Rahimian, Albuquerque, NM (US);
Timothy M. Long, Urbana, IL (US);
David R. Wheeler, Albuquerque, NM (US);
Chad L. Staiger, Albuquerque, NM (US);
James R. McElhanon, Manteca, CA (US);
Blake A. Simmons, San Francisco, CA (US);
Thomas Zifer, Manteca, CA (US);
Gregory M. Jamison, Albuquerque, NM (US);
Douglas A. Loy, Albuquerque, NM (US);
Kamyar Rahimian, Albuquerque, NM (US);
Timothy M. Long, Urbana, IL (US);
David R. Wheeler, Albuquerque, NM (US);
Chad L. Staiger, Albuquerque, NM (US);
Sandia National Laboratories, Livermore, CA (US);
Abstract
Two new surfactant molecules are reported which contain thermally labile Diels-Alder adducts connecting the polar and non-polar sections of each molecule. The two surfactants possess identical non-polar dodecyl tail segments but exhibit different polar headgroups. The surfactants become soluble in water when anionic salts are formed through the deprotonation of the surfactant headgroups by the addition of potassium hydroxide. When either surfactant is exposed to temperature above about 60° C., the retro Diels-Alder reaction occurs, yielding hydrophilic and hydrophobic fragments and the aqueous solutions of the surfactants subsequently exhibit loss of all surface-active behavior.