LAUNDRY COMPOSITION

Abstract

Disclosed is a laundry composition comprising a plurality of particles, wherein the particle comprises 30 to 95% of polyethylene glycol by weight of the particle, surfactant selected from anionic surfactant, nonionic surfactant, or a combination thereof, and occlusions of gas and wherein the surfactant is anionic surfactant.

Claims

1. A laundry composition comprising a plurality of particles, wherein the particle comprises: (a) 30 to 95% of polyethylene glycol by weight of the particle; (b) surfactant selected from anionic surfactant, nonionic surfactant, or a combination thereof; and (c) occlusions of gas, wherein the surfactant is anionic surfactant; and further wherein the particle comprises saccharides.

2. The composition according to claim 1 wherein the anionic surfactant is selected from alkyl sulfates, alkyl ether sulfates, or a mixture thereof, and the anionic surfactant is sodium lauryl sulfate, sodium lauryl ether sulfate, or a mixture thereof.

3. The composition according to claim 1 wherein the amount of the anionic surfactant is 0.1 to 15% by weight of the particle.

4. The composition according to claim 1 wherein the weight ratio of the polyethylene glycol to the surfactant is in the range of 1:1 to 1000:1.

5. The composition according to claim 1 wherein the occlusion of gas has an average diameter of 1 to 2000 microns.

6. The composition according to claim 1 wherein the particle further comprises a nonionic surfactant.

7. The composition according to claim 1 wherein the saccharides is polysaccharide and preferably are a starch.

8. The composition according to claim 1 wherein the particle comprises a perfume material.

9. The composition according to claim 1 wherein the particle comprises a combination of free perfume and perfume microcapsules.

10. The composition according to claim 1 wherein the particles are pastilles.

11. The composition according to claim 1 wherein the particle has a maximum dimension less than 10 mm.

12. The composition according to claim 1 wherein the particle is homogeneously structured.

13. A method of forming particles according to claim 1, where polyethylene glycol is melted and mixed with surfactant to make a melted mixture, gas is introduced to the melted mixture, and the melted mixture is then formed into particles.

14. The method according to claim 13, wherein the particles formed are a used in a laundry composition.

15. The method according to claim 13 wherein the particles have a maximum dimension from 2 to 6 mm, saccharides are polysaccharides, anionic surfactant is 0.4 to 7% by weight of the particle and the composition comprises a fatty add amide and further wherein polyethylene glycol is present and at a weight ratio of polyethylene glycol to surfactant of 5:1 to 200:1.

Description

EXAMPLES

Example 1

[0081] This example demonstrates the effect of type of surfactant on the generation of bubble in the slurry.

TABLE-US-00001 TABLE 1 Particle (% by weight) Ingredient A B 1 2 3 PEG 6000 .sup.a To 100 To 100 To 100 To 100 To 100 PEG 8000 .sup.b 30   30   30   30   30   Ester quats .sup.c — 1.3 — — — Sodium lauryl — — 1.3 — 1.3 ether sulphate .sup.d Polyoxyethylene — — — 1.3 — Lauryl Ether .sup.e Cocamide MIPA .sup.f — — — — 1.0 Starch 5.4 5.4 5.4 5.4 5.4 Sodium bicarbonate 3.5 3.5 3.5 3.5 3.5 Citric acid 1.5 1.5 1.5 1.5 1.5 Free perfume 6.0 6.0 6.0 6.0 6.0 Perfume microcapsules 2.5 2.5 2.5 2.5 2.5 .sup.a PEG-6000, supplied by Jiang Su Jia Feng Co. Ltd. .sup.b PEG-8000, supplied by DOW .sup.c Rewoquat WE 28 SH, supplied by Evonik .sup.d SLES, supplied by ZanYu Technology Group Co., Ltd. .sup.e AEO-9, supplied by BASF .sup.f Cocamide MIPA, supplied by Guangzhou Startec Science and Technology Co., Ltd.

[0082] A series of particle samples was prepared by following the formulation in Table 1. The PEG was heated in a mixing vessel, with stirring, until molten and homogeneous. The other ingredients were then slowly added with stirring one by one and finally free perfume and perfume microcapsules to form a slurry. Stirring was continued during the addition of the ingredients. The vessel was kept open for air introduction and stirring was maintained until 5 minutes later if there are bubbles or for 60 minutes if there is no bubble in the slurry. Then, the slurry was dipped onto a cold plate by syringe to solidify to form a hemispherical bead, had a largest diameter 4 to 6 mm and height 2 to 3 mm. The observations and densities for the samples were recorded in Table 2.

[0083] The bubbles were formed by trapping air from the atmosphere in the slurry. If the bubbles formed are easily broken during the stirring process and the entrapped air is released back into the atmosphere, indicating the amount of air bubbles entrapped in the particles are less stable.

TABLE-US-00002 TABLE 2 Bubble in Time to generate Density Sample the slurry bubble (minutes) Comments (g/cm.sup.3) A No — — 1.15 B No — — 1.13 1 Yes 40 Large and stable 0.95 2 Yes 45 Large and less stable 0.94 3 Yes 15 Small and stable 0.95

[0084] As shown in Table 2, the bubble was generated in the slurry by including either anionic surfactant, nonionic surfactant, or a combination thereof and resulted in lighter particle.