Paste-form washing and cleaning agents
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsThomas Merz, Khalil Shamayeli, Guenther Amberg, Heinz-Manfred Wilsberg
Life of this patent
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Abstract
A paste-form detergent composition containing (A) 20% to 58% by weight of a liquid surfactant component consisting primarily of a nonionic surfactant, (B) 2% to 40% by weight of solid builders, and (C) 2% to 40% by weight of a solid bleaching component consisting of a peroxygen-containing oxidizing agent and a bleach activator, based on the weight of the composition.
Claims15
A paste-form detergent composition that is substantially free of water and comprises a solid phase dispersed in a liquid phase, said detergent composition containing (A) 20% to 58% by weight of a liquid surfactant component comprising a nonionic surfactant (B) 2% to 40% by weight of solid builders, and (C) 2% to 40% by weight of a solid bleaching component comprising a peroxygen-containing oxidizing agent and a bleach activator, based on the weight of the composition, wherein the paste-form detergent composition has a viscosity, at 20° C. of from 70,000 mPas to 110,000 mPas, as measured with a Brookfield rotational viscometer at 5 r.p.m, wherein the liquid phase comprises the liquid surfactant component (A), said liquid surfactant component comprising a nonionic surfactant or surfactants selected from the group consisting of ethoxylated and optionally propoxylated alcohols corresponding to formula I:
- R1—(OC2H4)m—(OC3H6)n—OH (I)
- in which R1 is an alkyl or alkenyl group containing 6 to 11 carbon atoms, m has a value of 3 to 15 and n has a value of 0 to 6, and formula II:
- R2—(OC2H4)o—(OC3H6)p—OH (II)
- in which R2 is an alkyl or alkenyl group containing 12 to 22 carbon atoms, o has a value of 3 to 15 and p has a value of 0 to 6, and wherein the solid phase comprises the builder and bleaching components (B) and (C) in fine particulate form having a mean particle size of 5 to 200 μm and no more than 10% by weight of the particles are larger than 200 μm.
A process for producing a paste-form detergent composition comprising preparing a homogenous liquid surfactant component comprising a nonionic surfactant, and adding to said surfactant component (B) 2% to 40% by weight of solid builders, and (C) 2% to 40% by weight of a solid bleaching component comprising a peroxygen-containing oxidizing agent and a bleach activator, based on the weight of the composition, and wherein the paste-form detergent composition thus formed has a viscosity, at 20° C. of from 70,000 mPas to 110,000 mPas, as measured with a Brookfield rotational viscometer at 5 r.p.m, wherein said liquid surfactant component comprises a nonionic surfactant or surfactants selected from the group consisting of ethoxylated and optionally propoxylated alcohols corresponding to formula I:
- R1—(OC2H4)m—(OC3H6)n—OH (I)
- in which R1 is an alkyl or alkenyl group containing 6 to 11 carbon atoms, m has a value of 3 to 15 and n has a value of 0 to 6, and formula II:
- R2—(OC2H4)o—(OC3H6)p—OH (II)
- in which R2 is an alkyl or alkenyl group containing 12 to 22 carbon atoms, o has a value of 3 to 15 and p has a value of 0 to 6, and wherein the solid phase comprises the builder and bleaching components (B) and (C) in fine particulate form having a mean particle size of 5 to 200 μm and no more than 10% by weight of the particles are larger than 200 μm.
Dependencies are inferred from the claim text.