EP 0283791 B1 19910508 - AQUEOUS BLEACHING SUSPENSIONS CONTAINING PEROXYCARBOXYLIC ACID, THEIR PREPARATION AND THEIR USE
Title (en)
AQUEOUS BLEACHING SUSPENSIONS CONTAINING PEROXYCARBOXYLIC ACID, THEIR PREPARATION AND THEIR USE
Publication
Application
Priority
DE 3709347 A 19870321
Abstract (en)
[origin: US4790949A] Aqueous bleaching agent suspensions based on a water-insoluble peroxycarboxylic acid suspended in a carrier liquid in the presence of a colloidal silicic acid and of an acidifying agent which exhibit, in comparision to known suspensions with this base, an improved storage resistance and are more economical to prepare. This result is achieved by means of pourable-to-pasty bleaching agent suspensions which contain 0.1 to 9% by weight silicic acid in relation to the suspension and contain a hydrate-forming neutral salt which desensitizes peroxycarboxylilc acids, in an amount of 10 to 400% by weight, calculated hydrate-free and in relation to peroxycarboxylic acid added. Preferred bleaching agent suspensions contain 10-30% by weight diperoxydodecanedioic acid, 5-20% by weight sodium sulfate and 2 to 6% by weight pyrogenic silicic acid, each in relation to the suspension. The use of non-dried, hydrophilized and optionally in situ-desensitized peroxycarboxylic acids is especially preferred. The preparation of the bleaching agents is performed by homogeneously suspending the peroxycarboxylic acid in the thickened carrier liquid. The storage-resistant bleaching agent suspensions find application as laundry bleaching agents and for the preparation of cleaning and disinfecting agents.
IPC 1-7
IPC 8 full level
C11D 3/395 (2006.01); C11D 3/12 (2006.01); C11D 3/39 (2006.01); D06L 3/02 (2006.01)
CPC (source: EP US)
C11D 3/124 (2013.01 - EP US); C11D 3/3947 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0283791 A2 19880928; EP 0283791 A3 19890607; EP 0283791 B1 19910508; AT E63332 T1 19910515; DE 3709347 A1 19881006; DE 3862664 D1 19910613; DK 145588 A 19880922; DK 145588 D0 19880317; ES 2021773 B3 19911116; FI 880199 A0 19880118; FI 880199 A 19880922; JP S63249770 A 19881017; TR 23984 A 19910114; US 4790949 A 19881213
DOCDB simple family (application)
EP 88103336 A 19880304; AT 88103336 T 19880304; DE 3709347 A 19870321; DE 3862664 T 19880304; DK 145588 A 19880317; ES 88103336 T 19880304; FI 880199 A 19880118; JP 6596388 A 19880322; TR 12688 A 19880219; US 16899688 A 19880316