EP 0743978 B1 20010425 - BLEACHING TABLET WITH BUILDER SUBSTANCES
Title (en)
BLEACHING TABLET WITH BUILDER SUBSTANCES
Title (de)
BLEICHTABLETTE MIT BUILDERSUBSTANZEN
Title (fr)
COMPRIME DE BLANCHIMENT CONTENANT DES ADJUVANTS
Publication
Application
Priority
- DE 4404279 A 19940210
- EP 9500359 W 19950201
Abstract (en)
[origin: EP0965565A1] Tablets contg. builder substances comprise 2-100 wt.% amorphous, partly crystalline and/or crystalline layered silicates of formula Na2SixO2x+1.yH2O (I), where x=1.9-4 and y=0-20. The water content of the tablets is no more than the maximum theoretical water-binding capacity of the tablet ingredients. Also claimed are: (1) a process for producing tablets as above where the premixes intended for pressing are prepd. by mixing the individual ingredients, at least some of which are pregranulated; (2) a wash process in which at least two tablets as above, with the same or different compsn., are used in a single wash cycle, pref. a base detergent tablet and a water-softening and/or bleaching tablet; and (3) a wash process in which at least one tablet as above is used in a single wash cycle, the tablet(s) being dispensed onto the wash in the washing machine right at the start of the wash cycle. Pref. detergent tablets comprise 5-60 (esp. 10-40)wt.% (I), 0.5-98 wt.% zeolite and/or phosphate (pref. less than 30 wt.% phosphate), up to 40 wt.% anionic surfactants and/or soaps, and up to 20 wt.% nonionic surfactants. Water-softening tablets comprise 20-80 (esp. 30-60)wt.% (I), 0-80 (esp. 10-60)wt.% zeolite and/or phosphate, 0-50 (esp. 2-20) wt.% polycarboxylate, 0-15 (esp. 1-10)wt.% polymeric polycarboxylate, and 0-30 (esp. 2-15)wt.% surfactants and salts. Bleaching tablets comprise 20-80 (esp. 30-60) wt.% (I) and 20-50 (esp. 25-45) wt.% peroxy bleach. (I) may be used together with amorphous silicates of water-glass type.
IPC 1-7
IPC 8 full level
C11D 3/06 (2006.01); C11D 3/12 (2006.01); C11D 11/00 (2006.01); C11D 17/00 (2006.01)
CPC (source: EP US)
C11D 3/06 (2013.01 - EP US); C11D 3/1273 (2013.01 - EP US); C11D 3/128 (2013.01 - EP US); C11D 17/0073 (2013.01 - EP US); C11D 17/0078 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL
DOCDB simple family (publication)
US 5900399 A 19990504; AT E200794 T1 20010515; DE 4404279 A1 19950817; DE 59509220 D1 20010531; EP 0743978 A1 19961127; EP 0743978 B1 20010425; EP 0965565 A1 19991222; ES 2157320 T3 20010816; WO 9521908 A1 19950817
DOCDB simple family (application)
US 68755096 A 19961010; AT 95908245 T 19950201; DE 4404279 A 19940210; DE 59509220 T 19950201; EP 9500359 W 19950201; EP 95908245 A 19950201; EP 99115247 A 19950201; ES 95908245 T 19950201