Global Patent Index - EP 0622454 A1

EP 0622454 A1 1994-11-02 - Structuring liquid nonionic surfactants prior to granulation process.

Title (en)

Structuring liquid nonionic surfactants prior to granulation process.

Title (de)

Strukturierung von flüssigen nichtionischen Tensiden vor der Granulierung.

Title (fr)

Structuration des tensioactifs liquides non-ioniques avant la granulation.

Publication

EP 0622454 A1 (EN)

Application

EP 93870075 A

Priority

EP 93870075 A

Abstract (en)

A process for making a granular laundry detergent component or composition having a bulk density of at least 650 g/l, by dissolving a structuring agent in a nonionic surfactant, said structuring agent comprising a polymer, to form a pumpable premix and finely dispersing said premix with an effective amount of powder at a given operating temperature wherein the premix has a viscosity of at least 350 mPas when measured at said operating temperature and at a shear rate of 25s<-><1>. Preferred structurants comprise polymers having more than one functional hydroxyl group, especially polyvinyl alcohols, polyhydroxyacrylic acid polymers, and polymers such as polyvinyl pyrrolidone and PVNO, as well as sugars, artificial sweeteners and their derivatives. The premix is then processed into a granular detergent by any suitable process. Fine dispersion mixing, agglomeration, or spraying the premix onto a granular base product are preferred. Another aspect of the present invention is components or compositions comprising nonionic surfactant and structuring agents.

IPC 1-7

C11D 17/06; C11D 3/22; C11D 3/37

IPC 8 full level

C11D 1/72 (2006.01); C11D 1/835 (2006.01); C11D 3/22 (2006.01); C11D 3/28 (2006.01); C11D 3/32 (2006.01); C11D 3/34 (2006.01); C11D 3/37 (2006.01); C11D 11/00 (2006.01); C11D 17/06 (2006.01); C11D 1/52 (2006.01)

CPC

C11D 3/3761 (2013.01); C11D 1/72 (2013.01); C11D 1/835 (2013.01); C11D 3/221 (2013.01); C11D 3/28 (2013.01); C11D 3/32 (2013.01); C11D 3/349 (2013.01); C11D 3/3776 (2013.01); C11D 3/3792 (2013.01); C11D 11/0082 (2013.01); C11D 17/065 (2013.01); C11D 1/525 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

DOCDB simple family

EP 0622454 A1 19941102; AU 6780494 A 19941121; AU 693445 B2 19980702; CA 2160662 A1 19941110; CA 2160662 C 19990831; CN 1125462 A 19960626; CZ 283895 A3 19960214; EG 20591 A 19990930; FI 955143 A0 19951027; FI 955143 A 19951027; HU 216904 B 19991028; HU 9503082 D0 19951228; HU T72275 A 19960429; JP 2888983 B2 19990510; JP H08509775 A 19961015; KR 960701980 A 19960328; MA 23182 A1 19941231; NO 954308 D0 19951027; NO 954308 L 19951116; PE 54094 A1 19950105; PH 31661 A 19990112; WO 9425553 A1 19941110