US 11,807,780 B2
Aqueous coatings containing biosurfactants as bio-adjuvants and methods for using same
Laura Gage, Lawrenceville, NJ (US); Denis Bendejacq, Philadelphia, PA (US); and Homayoun Jamasbi, Lansdale, PA (US)
Assigned to RHODIA OPERATIONS, Paris (FR)
Filed by RHODIA OPERATIONS, Paris (FR)
Filed on Nov. 1, 2019, as Appl. No. 16/671,971.
Claims priority of provisional application 62/755,738, filed on Nov. 5, 2018.
Prior Publication US 2020/0140694 A1, May 7, 2020
Int. Cl. C09D 5/02 (2006.01); C08F 2/00 (2006.01); C08F 2/44 (2006.01); C08F 220/06 (2006.01); C08F 220/18 (2006.01); C08F 212/08 (2006.01); C08F 214/06 (2006.01); C08F 218/08 (2006.01); C08F 220/44 (2006.01); C08K 5/00 (2006.01); C08K 5/46 (2006.01); C08K 5/134 (2006.01); C08K 5/103 (2006.01); C08K 3/013 (2018.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C08K 3/34 (2006.01); C08K 3/36 (2006.01); C08F 2/24 (2006.01)
CPC C09D 5/025 (2013.01) [C08F 2/001 (2013.01); C08F 2/24 (2013.01); C08F 2/44 (2013.01); C08F 212/08 (2013.01); C08F 214/06 (2013.01); C08F 218/08 (2013.01); C08F 220/06 (2013.01); C08F 220/18 (2013.01); C08F 220/44 (2013.01); C08K 3/013 (2018.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 3/346 (2013.01); C08K 3/36 (2013.01); C08K 5/0058 (2013.01); C08K 5/103 (2013.01); C08K 5/134 (2013.01); C08K 5/46 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/265 (2013.01)] 44 Claims
OG exemplary drawing
 
1. An aqueous coating composition, comprising a dispersion comprising
(a) at least one latex polymer;
(b) a biocide;
(c) a biosurfactant comprising a mono-rhamnolipid in an amount effective to reduce the necessary biocide concentration in the coating composition compared to an analogous composition that lacks the biosurfactant; and
(d) water,
wherein the biosurfactant further comprises a di-rhamnolipid, and wherein the wt % ratio of mono-rhamnolipid to di-rhamnolipid is in the range of between about 50:50 and 99.9:0.1, respectively.