Invention Grant
- Patent Title: Aqueous hard surface cleaners based on terpenes and fatty acid derivatives
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Application No.: US14395090Application Date: 2013-04-12
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Publication No.: US09758751B2Publication Date: 2017-09-12
- Inventor: Aaron Brown , Wilma Gorman , Ronald A. Masters
- Applicant: Stepan Company
- Applicant Address: US IL Northfield
- Assignee: Stepan Company
- Current Assignee: Stepan Company
- Current Assignee Address: US IL Northfield
- Agency: Dilworth IP LLC
- International Application: PCT/US2013/036470 WO 20130412
- International Announcement: WO2013/162926 WO 20131031
- Main IPC: C11D1/02
- IPC: C11D1/02 ; C11D1/66 ; C11D3/50 ; C11D11/00 ; C11D17/04 ; C11D3/18 ; C11D3/20 ; C11D3/32 ; B43K29/05 ; C11D1/83 ; C11D3/10 ; C11D1/46 ; C11D1/52 ; C11D1/645 ; C11D1/65 ; C11D1/835 ; C11D1/94

Abstract:
Aqueous hard surface cleaner compositions useful for removing permanent ink are disclosed. The compositions comprise 75 to 99 wt. % of water; 0.1 to 5 wt. % of a monoterpene; 0.1 to 5 wt. % of a C10-C17 fatty acid derivative; and 0.1 to 5 wt. % of one or more surfactants. The fatty acid derivative is selected from N,N-dialkyl amides, N,N-dialkyl esteramines, and N,N-dialkyl amidoamines. Preferably, a base such as sodium carbonate or monoethanolamine is also included. The invention includes concentrates comprising the non-aqueous components recited above, as well as other applications for the cleaners and concentrates such as graffiti removers and permanent ink erasers. The combination of a monoterpene and certain fatty acid derivatives, especially fatty N,N-dialkyl amides, unexpectedly enables even dilute aqueous compositions to rapidly decolorize black permanent marker from hard, non-porous surfaces.
Public/Granted literature
- US20150098745A1 AQUEOUS HARD SURFACE CLEANERS BASED ON TERPENES AND FATTY ACID DERIVATIVES Public/Granted day:2015-04-09
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