Claims
- 1. A liquid preparation consisting essentially of
- a) 10 to 40% by weight of the fluorescent whitening agent having the formula: ##STR3## wherein M is hydrogen, an alkali metal, ammonium or magnesium; b) 20 to 70% by weight of polyethylene glycol having a mean molecular weight in the range of from 150 to 500;
- c) 10 to 30% by weight of water; and
- d) 0 to 15% by weight in total of one or more auxiliary compounds selected from the group consisting of dispersing agents, protective colloids, solvents for protective colloids, antifreezes, stabilizers, perfuming agents and suquestering agents; each based on the total weight of the liquid preparation.
- 2. A liquid preparation according to claim 1 comprising:
- a) 20 to 25% by weight of the fluorescent whitening agent having the formula (1) wherein M is hydrogen, lithium, sodium or potassium, ammonium or magnesium;
- b) 20 to 70% by weight of polyethylene glycol having a mean molecular weight in the range of from 150 to 500;
- c) 10 to 30% by weight of water; and
- d) 0 to 15% by weight of one or more auxiliary compounds; each based on the total weight of the liquid preparation.
- 3. A liquid preparation according to claim 2 in which M is sodium or lithium.
- 4. A liquid preparation according to claim 1 in which the polyethylene glycol has a mean molecular weight in the range of from 200 to 500.
- 5. A liquid preparation according to claim 1 in which the sequestering agents are ethylenediaminetetraacetic acid or nitrilotriacetic acid.
- 6. A liquid preparation according to claim 1 in which the dispersing agents are anionic in character.
- 7. A liquid preparation according to claim 6 in which the dispersing agents are condensation products of aromatic sulfonic acids with formaldehyde.
- 8. A liquid preparation according to claim 7 in which the dispersing agents are ditolylethersulfonic acid, naphthalenesulfonates or ligninsulfonates.
- 9. A liquid preparation according to claim 1 in which the protective colloids are modified polysaccharides derived from cellulose or heteropolysaccharides, carboxymethylcellulose, polyvinyl alcohols (PVOH), chitosan or derivatives thereof, starch or derivatives thereof, aluminium silicates or magnesium silicates.
- 10. A liquid preparation according to claim 9 in which the modified polysaccharide is xanthan.
- 11. A liquid preparation according to claim 1 in which the solvents for protective colloids and/or antifreezes are ethylene glycol or propylene glycol.
- 12. A liquid preparation according to claim 1 in which the amount of ethylene glycol or propylene glycol is 0.2 to 5% by weight, relative to the total weight of the formulation.
- 13. A liquid preparation according to claim 1 in which the stabilisers are 1,2-benzisothiazolin-3-one, formaldehyde or chloroacetamide.
- 14. A liquid preparation according to claim 13 in which the 1,2-benzisothiazolin-3-one, formaldehyde or chloroacetamide are used in an amount. of 0.1 to 1% by weight, relative to the total weight of the formulation.
Priority Claims (1)
Number |
Date |
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Kind |
9422280 |
Nov 1994 |
GBX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/548,636, filed on Oct. 26, 1995 now abd.
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Continuations (1)
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Number |
Date |
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Parent |
548636 |
Oct 1995 |
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