EP 0875552 A1 19981104 - Acidic limescale removal compositions
Title (en)
Acidic limescale removal compositions
Title (de)
Saure Zusammensetzungen zum Entfernen von Kalkablagerungen
Title (fr)
Compositions acides pour enlèvement de tartre
Publication
Application
Priority
EP 97870058 A 19970430
Abstract (en)
The present invention relates to a liquid acidic composition having a pH below 5 and comprising from 0.1% to 70% by weight of the total composition of an acid, and a surfactant system comprising a zwitterionic surfactant and a second surfactant selected from the group consisting of: an amine oxide according to the formula R1R2R3NO wherein each of R1, R2 and R3 is independently a saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl group of from 1 to 30 carbon atoms, an amine according to the formula RR'R''N, wherein R is a saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl group of from 1 to 30 carbon atoms, and wherein R' and R'' are independently saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl groups of from 1 to 30 carbon atoms, or hydrogen, a quaternary ammonium surfactant according to the formula R1R2R3R4N<+> X<-> , wherein X is a counteranion, R1 is a saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl group of from 1 to 30 carbon atoms, and R2, R3 and R4 are independently hydrogen, or saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl groups of from 1 to 4 carbon atoms, and mixture thereof, at a weight ratio of said zwitterionic surfactant to said second surfactant of at least 1:1. These compositions deliver excellent limescale removal performance as well as outstanding greasy soap scum cleaning on hard-surfaces.
IPC 1-7
IPC 8 full level
C11D 1/62 (2006.01); C11D 1/75 (2006.01); C11D 1/88 (2006.01); C11D 1/94 (2006.01); C11D 3/02 (2006.01); C11D 3/20 (2006.01); C11D 3/34 (2006.01); C11D 17/08 (2006.01); C11D 1/40 (2006.01); C11D 1/90 (2006.01); C11D 1/92 (2006.01)
CPC (source: EP)
C11D 1/94 (2013.01); C11D 3/042 (2013.01); C11D 3/2082 (2013.01); C11D 3/2086 (2013.01); C11D 3/3418 (2013.01); C11D 1/40 (2013.01); C11D 1/62 (2013.01); C11D 1/75 (2013.01); C11D 1/90 (2013.01); C11D 1/92 (2013.01); C11D 3/3409 (2013.01)
Citation (search report)
- [A] EP 0666304 A1 19950809 - PROCTER & GAMBLE [US]
- [A] US 5061393 A 19911029 - LINARES CARLOS G [US], et al
- [A] WO 9421772 A1 19940929 - PROCTER & GAMBLE [US]
- [X] DATABASE WPI Section Ch Week 9301, Derwent World Patents Index; Class D25, AN 93-004726, XP002042924
- [A] DATABASE WPI Section Ch Week 9050, Derwent World Patents Index; Class A97, AN 90-372270, XP002042925
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0875552 A1 19981104; CA 2287836 A1 19981105; JP 2001522397 A 20011113; WO 9849258 A1 19981105
DOCDB simple family (application)
EP 97870058 A 19970430; CA 2287836 A 19980424; IB 9800643 W 19980424; JP 54677498 A 19980424