Compositions – Fluent dielectric – N-containing
Patent
1994-06-24
1996-02-13
Einsmann, Margaret
Compositions
Fluent dielectric
N-containing
252 891, 252174, 25217425, 252549, 252558, 25217414, C11D 1706, C11D 112, C11D 310
Patent
active
054909546
ABSTRACT:
A free-flowing granular detergent composition or component having a bulk density of at least 550 g/liter comprises an anionic surfactant of which the acid form is a liquid at ambient temperature, preferably primary alcohol sulphate and/or alkylbenzene sulphonate; zeolite; and alkali metal, preferably sodium, carbonate. The level of sodium carbonate is 2-12 wt % when the anionic surfactant is wholly primary alcohol sulphate, otherwise 2-25 wt %. The compositions have lower levels of carbonate and higher surfactant loadings than previously disclosed materials, without loss of powder properties. The materials are preferably prepared by a granulation process involving in-situ neutralisation of anionic surfactant acid by carbonate in a high-speed mixer/granulator.
REFERENCES:
patent: 4970017 (1990-11-01), Nakamura et al.
patent: 4999138 (1991-03-01), Nebashi et al.
International Search Report in International Patent Application No. PCT/EP 94/01856.
Abstract of JP 01020298. Jan. 24, 1989.
Abstract of JP 02169696. Jun. 29, 1990.
Abstract of WO94/01526. Jan. 20, 1994.
Abstract of WO 94/07990. Apr. 11, 1994.
Joyeux Christophe
van der Hoeven Frans A.
Einsmann Margaret
Lever Brothers Company Division of Conopco, Inc.
Mitelman Rimma
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