Patents: Antiperspirants: Aerosol antiperspirants

Source: CBNB


Source: SPC, Soap, Perfumery and Cosmetics (Nov 2018 , Vol 91 , Iss No 11 , p 58-59 and Website: )Colgate-Palmolive has been granted US patent 9,408,799 on 9 Aug
2016 covering an aerosol antiperspirant composition made of at least one
active antiperspirant ingredient, a silicone solvent, a bis-vinyl
dimethicone/dimethicone copolymer, at least one propellant and at least one
fatty acid ester. The composition claims to offer enhanced antiperspirant
efficacy and improved deposition on the skin. The bis-vinyl
dimethicone/dimethicone copolymer is preferably present at 0.15-0.3%. The
silicone solvent dimethicone is present at 0.9-1.2% and the preferred fatty
acid ester is a blend of isopropyl palmitate and isopropyl myristate
totalling 3-4.5%. It also includes a 0.25-0.35% of trialkylaryl ammonium
hectorite clay as a thickener. The active antiperspirant ingredient is
selected from zirconium salts, zinc salts and aluminium salts. The patent
further consists of a process of production by mixing the silicone solvent,
the bis-vinyl dimethicone/dimethicone copolymer, and the fatty acid esters
as a premixed gel and blending this with the active antiperspirant
ingredient. The composition may further contain 0.5-2% C12-C15 alkyl
benzoate and 0.5-0.75% hydrogenated soybean oil. This composition is claimed
to provide the same level of efficacy if the active level is at 10% versus
17% from other compositions. Further components optionally include a
preservative, a fragrance, an antioxidant, an emollient and an emulsifier,
and at least one propellant, usually a liquefied hydrocarbon mixture of
propane, isobutene and butane. The propellant accounts to nearly 85% by
weight of the total composition. Original Source: SPC, Soap, Perfumery and
Cosmetics,, Copyright HPCi Media Ltd
2018. Released to ICIS 11 Feb 2019[This article was prepared by Chemical Business NewsBase (CBNB), a third party premium option available through ICIS news. For any queries about the content please contact: John Godfrey,, +44 (0) 1223 463167]