	US 12,109,283 B2
	Safe and ecofriendly persistent sanitizing gel for topical application
Nirmal Koshti, Piscataway, NJ (US); Bhagyesh Jagannath Sawant, Kalyan (IN); Kishor Pundalik Bari, Pavel (IN); Bilal Momin, Bhiwandi (IN); Sushant Khandekar, Kalyan (IN); Sukanya Talukdar, Thane (IN); Parag Narendra Savla, Bhiwandi (IN); Ananda Shamrao Hodage, Dombivali (IN); and Pooja Vaidya, Nagpur (IN)
Assigned to GALAXY SURFACTANTS LTD.
Filed by GALAXY SURFACTANTS LTD., Mumbai (IN)
Filed on Aug. 11, 2021, as Appl. No. 17/444,896.
Claims priority of application No. 202121002782 (IN), filed on Jan. 20, 2021.
Prior Publication US 2022/0226209 A1, Jul. 21, 2022
Int. Cl. A61Q 17/00 (2006.01); A61K 8/04 (2006.01); A61K 8/19 (2006.01); A61K 8/92 (2006.01)

CPC A61K 8/19 (2013.01) [A61K 8/042 (2013.01); A61K 8/922 (2013.01); A61Q 17/005 (2013.01); A61K 2800/413 (2013.01); A61K 2800/48 (2013.01)]

10 Claims

1. A safe and ecofriendly sanitizing hydro-alcoholic gel composition for topical application with instant and persistent antimicrobial activity comprising:

a) 60 to 70% by weight of ethyl alcohol;

b) 5 to 100 ppm by weight of silver nanoparticles;

c) 0.2 to 5% by weight of fatty acids derived from Tung seed oil, wherein at least about 80% of the fatty acids are α-eleostearic acid (ESA);

d) 0.2 to 2% by weight of carbohydrate based gelling agents/thickeners;

e) optionally, 1 to 5% by weight of skin benefiting agents; and

f) demineralized water to make up 100% w/w,

wherein at least a portion of the silver nanoparticles and at least a portion of the ESA are present in the form of ESA-silver nanoparticle complexes where the ESA acts as a ligand and prevents aggregation of the silver nanoparticles in the hydro-alcoholic gel composition, and

wherein the α-eleostearic acid-silver nanoparticle complexes exhibit a surface plasmon resonance UV absorbance at 460 nm.