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Thickened fabric conditioners

a fabric conditioner and thickening technology, applied in the field of thickening fabric conditioners, can solve the problem of marginal perfume carry-over, and achieve the effect of stable ageing, lower stringiness of products, and lower stringiness

Inactive Publication Date: 2004-11-18
COLGATE PALMOLIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides fabric softening compositions that are more stable, easier to prepare, and have better fragrance retention capacity. These compositions use a water-soluble cross-linked cationic vinyl polymer that is cross-linked by a cross-linking agent comprised of from about 70 to 300 ppm of a difunctional vinyl addition monomer cross-linking agent. The fabric softening compositions do not contain an alkoxylated ether of the formula described in WO 90 / 12862 and EP-A-799 878. Instead, the compositions use a perfume that does not lose its fragrance during the wash. The perfume can be released for a longer period of time and the composition does not require a co-softener. The invention also provides fabric softening compositions that are more effective at delivering perfume to fabrics.

Problems solved by technology

However, the amount of perfume carry-over is marginal due to much of it being lost down the drain during the wash.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example ii

Rate of Dispersion of Extracted Polymers

[0077] This example is carried out to determine if the faster rate of dispersion for the SNF polymer is due to the presence of the co-surfactant or due to a difference in the polymer from BP.

[0078] Procedure: Each Polymer was suspended in hexane to create equal and uniform particle sizes in a 10% solution. 1 ml of this suspension was transferred to a vial containing 10 ml water. Vials were mixed by inverting 3 times and gellation rate was observed.

[0079] Results: The SNF polymer was completely gelled by the end of the inversions. The BP Polymer still showed large lumps of polymer. The sample was allowed to stand overnight and the gel was obtained by morning.

[0080] The data show that the SNF polymer disperses more easily than the BP Polymer in the absence of a co-surfactant. This indicates that there is an inherent difference between the two polymers other than the presence or type of co-surfactant or oil.

example iii

[0081] Three compositions were prepared as described below which differed with respect to the thickening polymer: the first (control) contained no polymer; the second contained P 7050; and the third contained SNF polymer. The formulas are described in the following table:

1 Formula: Percent As Active Ester Quat 8.0% Perfume 0.75% Dequest 2000.sup.(1) 0.10% Lactic / Lactate Buffer 0.063% CaCl.sub.2 (10% sol) 0.050% Polymer* 0 or 0.15% De-ionized H.sub.2O to 100% *= BP 7050 or SNF .sup.(1)Dequest 2000 is a commercial chelating compound comprising aminotri(methylenephosphonic acid). It is referred to as "Dequest" in the remaining Examples.

[0082] Analytical Data: Analysis of Fragrance Deposited onto Fabric by SPME (solid phase micro-extraction) GC / MS. The results are shown in FIG. 2.

[0083] FIG. 2 demonstrates that at 100 ppm water hardness, the softener composition with SNF polymer delivered significantly more fragrance (73% increase) on the fabric surface (dry) as compared to the control ...

example iv

[0085] In this example the swelling kinetic of BP and SNF polymers is compared. A cross-linked polymer, when placed in a suitable solvent, imbibes the solvent and undergoes swelling to an extent determined by the nature of the polymer and the solvent. By swelling is intended the ability of the polymer to thicken the solvent whether it is water or a fabric softening composition.

[0086] De-ionized (DI) water was thickened with 0.5% (% of actives in emulsion) of BP 7050 or SNF polymer. The polymer under emulsion form was rapidly added to DI water through a syringe. The mixing speed was fixed at 250 rpm and dispersion time at 3 minutes. Swelling kinetic was then followed using a Brookfield RVT viscometer (10 rpm, spindle 2). The results are shown in FIG. 6.

[0087] As shown in FIG. 6, the final viscosity (24H) of DI water thickened with SNF polymer is obtained right after making whereas with BP 15 minutes are necessary.

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Abstract

The present invention relates to thickened fabric conditioners, which fabric conditioners contain a particular polymeric thickener, which is obtained by polymerizing from 5 to 100 mole percent of a cationic vinyl addition monomer, from 0 to 95 mole percent of acrylamide, and from 70 to 300 ppm of a difunctional vinyl addition monomer cross-linking agent. As compared to such compositions comprising a similar product but obtained from a polymerization reaction using between 5 and 45 ppm cross-linking agent considerable advantages are obtained. Especially, the delivery of fragrance present in the softening composition is more efficiently carried over to the fabrics to be treated.

Description

[0001] This application is a continuation-in-part of prior co-pending U.S. application Ser. No. 10 / 006,337 filed Dec. 3, 2001 which in turn is a continuation-in-part of U.S. application Ser. No. 09 / 749,183 filed Dec. 27, 2000, the disclosures of which are incorporated herein.[0002] The present invention relates to fabric conditioning formulations, and especially to rinse-cycle fabric conditioners, comprising at least one fabric softener, and at least one thickening agent for water-based compositions. More specifically, these fabric conditioning formulations also contain at least one fragrance.[0003] Conventionally, most domestic liquid detergents and liquid fabric conditioning or fabric softener compositions make use of thickening properties of surfactant ingredients or added salts to come to a desired rheology. The last decade, however, there is a growing need to come to formulations that are physically and Theologically stable at ambient conditions for at least a month or so. Such...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C11D1/62C11D3/00C11D3/33C11D3/36C11D3/37C11D3/50
CPCC11D1/62C11D3/0015C11D3/33C11D3/50C11D3/364C11D3/3769C11D3/3773C11D3/36
Inventor SMITH, DANIELSALESSES, ISABELLEDEWEZ, JACQUESBREUER, ERICKABROZE, GUYHEIBEL, MARIJAFAROOQ, AMJAD
Owner COLGATE PALMOLIVE CO
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