Water dispersible fragranced film and use thereof

Abstract

Fragranced films containing a water soluble a/o water dispersible polyvinyl alcohol polymer are disclosed. Uses of the fragranced films in providing a fragrance benefit and/or in controlling malodours is also disclosed, including when used in conjunction with lavatory appliances, dishwashing machines and in laundry washing machines.

Claims

1. A fragranced film comprising, a film formed of a water soluble and/or a water dispersible polyvinyl alcohol polymer, wherein the film comprises a fragrance constituent absorbed or adsorbed onto a free-flowing particulate material based on a polysaccharide polymer which fragrance constituent includes one or more components which individually concurrently satisfy the following parameters: (a) a c Log P<3.00; (b) a Vapor Pressure >0.1 mm Hg; (c) a molecular weight of <180, and where the said components cumulatively comprise not more than about 10% wt. of the fragrance constituent.

2. The fragranced film of claim 1, wherein the polysaccharide polymer in a particulate form.

3. The fragranced film of claim 1, wherein the particulate material is microcrystalline cellulose.

4. The fragranced film of claim 1, wherein the film comprises one or more additional materials.

5. The fragranced film of claim 4, which comprises a thickener constituent.

6. The fragranced film of claim 4, which comprises an organic solvent constituent.

7. An article comprising the fragranced film of claim 1.

8. The article of claim 7, wherein the article is a pouch, sachet, or other article which further comprises one or more cleaning compositions and/or textile treatment compositions.

9. The article of claim 7, wherein the article includes as part of its construction, or alternately contains the fragranced film.

10. A method of ameliorating malodors, the method comprising the step of: providing a fragranced film according to claim 1 to the locus of the malodors which locus also contains water in a sufficient amount to dissolve the water soluble and/or the water dispersible polyvinyl alcohol polymer of the fragranced film.

11. The fragranced film of claim 3, wherein the microcrystalline cellulose has an average particle size of between 0.01-1000 microns.

12. The fragranced film of claim 1, wherein the particulate material has a sufficiently small average particle size such that the fragrance constituent is translucent or essentially transparent within the fragranced film.

Description

EXAMPLES

(1) As previously stated, particularly preferred fast dissolving water soluble films of the invention are those in which the fragrance constituent concurrently satisfy the following (averaged) parameters: (a) a c Log P<3.00; (b) a Vapor Pressure >0.1 mm Hg; (c) a molecular weight of <180. Such a requirement are met by the following “example” compositions which are identified by a digit prepended by the letter “E”. Such a requirement are not met by the following “comparative” compositions which are identified by a digit prepended by the letter “C”.

(2) The fast dissolving films used in the example and comparative example compositions were formed by the same method, and apart from the fragrance composition included, were formed from the same amounts of the same materials. Thus apart from the specific fragrance composition, all films formed were produced in the same manner and yielded films of identical thickness and other physical characteristics. The composition of the films are as follows:

(3) TABLE-US-00002 % wt. polyvinyl alcohol 57.9 gum Arabic 10.0 propylene glycol 5.0 microcrystalline cellulose 2.0 colorant 0.1 fragrance composition 25.0

(4) Thus, the only variant in the films used was the specific fragrance constituent present, and if the components present therein met the parameters (a), (b) and (c) disclosed previously.

(5) A first “example” composition of a fast dissolving fragranced film of the invention is as follows:

(Example) E1

(6) TABLE-US-00003 “Formula Fruity Floral” Vapor <3 cLogP Pressure and >0.1 VP Raw Name MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 2.35 −0.64 134.18 0.0319 Raw Material 71 0.80 1.82 102.18 0.5870 0.80 Raw Material 114 0.50 1.86 128.17 3.0100 0.50 Raw Material 113 1.00 1.93 166.22 0.0875 Raw Material 26 5.20 2.08 150.18 0.1250 5.20 Raw Material 76 4.50 2.11 172.27 0.0034 Raw Material 60 2.00 2.26 130.19 5.9000 2.00 Raw Material 117 1.10 2.34 164.20 0.0733 Raw Material 106 0.00 2.35 160.81 0.1510 0.00 Raw Material 70 7.20 2.51 192.21 0.0004 Raw Material 47 0.20 2.72 198.62 0.0132 Raw Material 127 0.90 2.85 138.21 0.2380 0.90 Raw Material 85 1.50 3.04 140.23 0.5240 Raw Material 12 0.50 3.05 186.25 0.0977 Raw Material 100 0.01 3.08 142.24 0.0090 Raw Material 94 0.10 3.10 168.24 0.0443 Raw Material 96 0.30 3.22 196.20 0.0000 Raw Material 81 1.00 3.38 154.25 0.0521 Raw Material 86 0.40 3.38 156.27 0.0041 Raw Material 39 3.34 3.45 152.24 0.0596 Raw Material 50 8.10 3.47 156.27 0.0788 Raw Material 112 0.10 3.48 192.26 0.0172 Raw Material 122 0.01 3.52 150.22 0.0094 Raw Material 31 2.00 3.55 196.29 0.0638 Raw Material 41 1.56 3.55 151.25 0.0429 Raw Material 115 0.01 3.58 154.25 0.4560 Raw Material 8 0.60 3.60 184.28 0.0025 Raw Material 66 0.80 3.91 190.29 0.0048 Raw Material 65 5.50 3.94 190.29 0.0028 Raw Material 129 3.39 3.96 198.31 0.0312 Raw Material 82 1.00 4.02 196.29 0.0864 Raw Material 35 0.02 4.09 185.70 0.0043 Raw Material 49 0.05 4.16 192.30 0.0157 Raw Material 121 2.00 4.34 196.29 0.0319 Raw Material 83 5.00 4.36 204.31 0.0020 Raw Material 128 0.90 4.37 184.28 0.0043 Raw Material 7 0.50 4.67 184.32 1.0500 Raw Material 125 0.04 4.76 182.07 0.0111 Raw Material 103 6.28 4.83 136.24 1.0300 Raw Material 119 7.00 4.88 136.24 0.7020 Raw Material 74 10.70 4.89 216.33 0.0003 Raw Material 1 0.54 5.16 184.32 0.0088 Raw Material 78 4.50 5.18 234.38 0.0026 Raw Material 23 0.40 mixture mixture #N/A Raw Material 42 0.40 NAT NAT 0.1000 Raw Material 79 5.70 NAT NAT 0.2 9.40% wt

(Example) E2

(7) TABLE-US-00004 “Formula Ocean” Vapor <3 cLogP Pressure and >0.1 VP Raw Name MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 43 2.13 1.51 146.15 0.0003 Raw Material 26 3.00 2.08 150.18 0.1250 3.00 Raw Material 36 0.38 2.43 178.87 0.0004 Raw Material 64 0.25 2.54 206.24 0.0008 Raw Material 118 0.63 2.60 154.25 0.0108 Raw Material 44 0.25 2.62 122.17 0.8390 0.25 Raw Material 30 1.25 2.71 154.25 0.0002 Raw Material 63 0.25 2.73 164.20 0.0057 Raw Material 87 0.75 2.87 154.25 0.2530 0.75 Raw Material 45 12.50 2.98 192.26 0.0083 Raw Material 37 0.88 3.04 152.24 0.0060 Raw Material 81 2.13 3.38 154.25 0.0521 Raw Material 86 0.25 3.38 156.27 0.0041 Raw Material 39 11.50 3.45 152.24 0.0596 Raw Material 50 8.75 3.47 156.27 0.0788 Raw Material 31 11.88 3.55 196.29 0.0638 Raw Material 41 5.63 3.55 151.25 0.0429 Raw Material 115 1.00 3.58 154.25 0.4560 Raw Material 14 1.88 4.02 196.29 0.0137 Raw Material 52 3.38 4.05 170.21 0.0097 Raw Material 68 3.00 4.10 196.29 0.0297 Raw Material 22 0.50 4.16 192.30 0.0129 Raw Material 5 0.63 4.25 170.30 0.0393 Raw Material 38 0.25 4.33 #REF! 0.0001 Raw Material 121 2.00 4.34 196.29 0.0319 Raw Material 80 7.88 4.36 204.31 0.0020 Raw Material 128 0.63 4.37 184.28 0.0043 Raw Material 89 0.56 4.39 198.06 0.0596 Raw Material 21 7.13 4.57 208.26 0.0024 Raw Material 51 0.06 4.65 200.32 0.0634 Raw Material 7 1.38 4.67 184.32 1.0500 Raw Material 73 0.38 4.84 220.27 0.0000 Raw Material 48 1.50 4.87 220.27 0.0000 Raw Material 18 0.13 5.41 236.40 0.0022 Raw Material 123 0.38 5.80 226.40 0.0010 Raw Material 62 3.13 NAT NAT 1.7000 Raw Material 104 1.25 NAT NAT 0.9000 Raw Material 108 0.63 NAT NAT 0.0100 100% wt. 4.00% wt

(Example) E3

(8) TABLE-US-00005 “Formula Woody Floral” Vapor <3 cLogP Pressure and >0.1 VP Raw Name MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 1.64 −0.64 134.18 0.0319 Raw Material 70 3.00 2.51 192.21 0.0004 Raw Material 116 1.00 2.63 194.27 0.0025 Raw Material 84 0.50 2.76 144.21 2.0600 0.50 Raw Material 99 0.00 2.84 138.21 0.1560 0.00 Raw Material 127 1.00 2.85 138.21 0.2380 0.30 Raw Material 130 0.30 2.85 138.10 0.2380 1.00 Raw Material 11 0.10 3.03 128.22 1.0500 Raw Material 85 1.00 3.04 140.23 0.5240 Raw Material 12 1.00 3.05 186.25 0.0977 Raw Material 101 0.00 3.06 140.26 0.2140 Raw Material 100 0.00 3.08 142.24 0.0090 Raw Material 94 0.05 3.10 168.24 0.0443 Raw Material 96 0.50 3.22 196.20 0.0000 Raw Material 131 1.00 3.25 158.20 0.0015 Raw Material 39 1.00 3.45 152.24 0.0596 Raw Material 50 10.00 3.47 156.27 0.0788 Raw Material 46 1.00 3.72 190.29 15.4000 Raw Material 65 2.00 3.94 190.29 0.0028 Raw Material 3 0.10 4.09 156.27 0.1580 Raw Material 97 1.50 4.22 256.35 0.0000 Raw Material 83 20.00 4.36 204.31 0.0020 Raw Material 128 1.25 4.37 184.28 0.0043 Raw Material 4 0.05 4.53 168.28 0.0423 Raw Material 7 0.15 4.67 184.32 1.0500 Raw Material 93 2.50 4.78 206.33 0.0037 Raw Material 69 15.00 4.88 238.37 0.0000 Raw Material 119 1.00 4.88 136.24 0.7020 Raw Material 74 10.00 4.89 216.33 0.0003 Raw Material 98 0.50 5.05 220.56 0.0005 Raw Material 75 10.00 5.06 222.28 0.0000 Raw Material 6 0.05 5.16 184.32 0.0088 Raw Material 78 7.50 5.18 234.38 0.0026 Raw Material 2 0.20 5.30 210.36 0.0040 Raw Material 28 0.30 5.71 242.40 0.0014 Raw Material 16 0.30 Raw Material 102 4.50 1.2000 100% wt. 1.80% wt.

(Example) E4

(9) TABLE-US-00006 “Formula Floral BQT” Vapor <3 cLogP Pressure and >0.1 VP Raw Name MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 0.86 −0.64 134.18 0.0319 Raw Material 67 0.09 0.82 128.13 0.0003 Raw Material 43 0.80 1.51 146.15 0.0003 Raw Material 59 1.20 1.55 166.18 0.0002 Raw Material 24 5.00 1.76 136.15 0.0192 Raw Material 91 0.01 1.83 136.15 0.2570 0.01 Raw Material 10 1.50 2.08 156.23 0.0073 Raw Material 32 1.50 2.30 222.24 0.0001 Raw Material 92 0.50 2.41 146.19 0.0158 Raw Material 63 0.05 2.73 164.20 0.0057 Raw Material 84 0.50 2.76 144.21 2.0600 0.50 Raw Material 127 0.20 2.85 138.21 0.2380 0.20 Raw Material 85 0.10 3.04 140.23 0.5240 Raw Material 131 1.05 3.25 158.20 0.0015 Raw Material 8 4.00 3.60 184.28 0.0025 Raw Material 65 1.50 3.94 190.29 0.0028 Raw Material 3 0.20 4.09 156.27 0.1580 Raw Material 83 15.60 4.36 204.31 0.0020 Raw Material 128 1.20 4.37 184.28 0.0043 Raw Material 25 1.00 4.45 208.35 0.0000 Raw Material 4 0.05 4.53 168.28 0.0423 Raw Material 7 0.10 4.67 184.32 1.0500 Raw Material 93 2.65 4.78 206.33 0.0037 Raw Material 103 5.00 4.83 136.24 1.0300 Raw Material 69 13.50 4.88 238.37 0.0000 Raw Material 74 10.00 4.89 216.33 0.0003 Raw Material 75 10.20 5.06 222.28 0.0000 Raw Material 6 0.05 5.16 184.32 0.0088 Raw Material 78 20.50 5.18 234.38 0.0026 Raw Material 16 0.10 Raw Material 109 1.00 #N/A #N/A #N/A 100% wt. 0.71% wt.

(Comparative) C1

(10) TABLE-US-00007 “Formula Floral Green” Vapour <3 cLogP Pressure and >0.1 VP Raw Name MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 7.60 −0.64 134.18 0.0319 Raw Material 58 0.03 0.30 140.14 0.0001 Raw Material 27 0.50 1.08 108.14 0.0331 Raw Material 43 0.53 1.51 146.15 0.0003 Raw Material 111 3.18 1.57 122.17 0.0147 Raw Material 91 0.04 1.83 136.15 0.2570 0.04 Raw Material 113 0.05 1.93 166.22 0.0875 Raw Material 90 0.32 2.04 178.23 0.0076 Raw Material 26 9.09 2.08 150.18 0.1250 9.09 Raw Material 76 11.73 2.11 172.27 0.0034 Raw Material 117 0.18 2.34 164.20 0.0733 Raw Material 70 2.18 2.51 192.21 0.0004 Raw Material 72 0.09 2.61 142.20 0.7960 0.09 Raw Material 63 0.53 2.73 164.20 0.0057 Raw Material 99 0.02 2.84 138.21 0.1560 0.02 Raw Material 29 0.91 2.85 154.25 0.0002 Raw Material 127 0.60 2.85 138.21 0.2380 0.60 Raw Material 88 0.64 2.87 154.25 0.2530 0.64 Raw Material 45 3.09 2.98 192.26 0.0083 Raw Material 37 0.45 3.04 152.24 0.0060 Raw Material 85 1.71 3.04 140.23 0.5240 Raw Material 12 1.09 3.05 186.25 0.0977 Raw Material 126 0.47 3.09 142.24 0.9490 Raw Material 61 1.78 3.13 154.25 1.1100 Raw Material 13 0.18 3.18 156.23 0.4970 Raw Material 96 0.39 3.22 196.20 0.0000 Raw Material 131 0.45 3.25 158.20 0.0015 Raw Material 50 8.00 3.47 156.27 0.0788 Raw Material 31 5.73 3.55 196.29 0.0638 Raw Material 41 1.32 3.55 151.25 0.0429 Raw Material 124 0.01 3.55 154.53 0.0779 Raw Material 115 0.27 3.58 154.25 0.4560 Raw Material 15 0.32 3.67 170.25 0.1520 Raw Material 65 1.86 3.94 190.29 0.0028 Raw Material 52 0.18 4.05 170.21 0.0097 Raw Material 3 0.59 4.09 156.27 0.1580 Raw Material 80 23.11 4.36 204.31 0.0020 Raw Material 128 0.91 4.37 184.28 0.0043 Raw Material 54 0.32 4.45 192.02 0.0108 Raw Material 7 0.55 4.67 184.32 1.0500 Raw Material 95 1.05 4.78 206.33 0.0200 Raw Material 120 6.36 4.88 136.24 0.7020 Raw Material 6 0.95 5.16 184.32 0.0088 Raw Material 17 0.05 5.18 236.40 0.0022 Raw Material 2 0.38 5.30 210.36 0.0040 Raw Material 23 0.21 Mixture Mixture #N/A 100% wt. 10.48% wt

(Comparative) C2

(11) TABLE-US-00008 “Formula Fruity Melon” Vapour <3 cLogP Pressure and >0.1 VP Raw Material MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 44.18 −0.64 134.18 0.0319 Raw Material 58 3.17 0.30 140.14 0.0001 Raw Material 55 7.33 0.72 130.14 0.6450 7.33 Raw Material 33 2.67 1.77 116.16 13.7000 2.67 Raw Material 56 6.00 1.85 116.16 10.9000 6.00 Raw Material 19 5.67 2.12 130.19 5.0000 5.67 Raw Material 60 7.33 2.26 130.19 5.9000 7.33 Raw Material 117 0.83 2.34 164.20 0.0733 Raw Material 99 0.13 2.84 138.21 0.1560 0.13 Raw Material 107 1.33 2.94 184.28 0.0551 Raw Material 85 7.33 3.04 140.23 0.5240 Raw Material 101 0.02 3.06 140.26 0.2140 Raw Material 9 2.67 3.10 206.24 0.0017 Raw Material 20 5.67 3.25 158.24 0.7050 Raw Material 8 1.67 3.60 184.28 0.0025 Raw Material 46 2.33 3.72 190.29 15.4000 Raw Material 65 1.67 3.94 190.29 0.0028 100% wt. 29.13% wt.

(Comparative) C3

(12) TABLE-US-00009 “Formula Fruity Blueberry” Vapour <3 cLogP Pressure and >0.1 VP Raw Material MW (mm and <180 (code) % cLogP (g/mol) Hg) MW Raw Material 53 58.50 −0.64 134.18 0.0319 Raw Material 58 0.88 0.30 140.14 0.0001 Raw Material 105 13.27 1.48 164.20 0.0004 Raw Material 56 0.44 1.85 116.16 10.9000 0.44 Raw Material 90 4.42 2.04 178.23 0.0076 Raw Material 26 14.16 2.08 150.18 0.1250 14.16 Raw Material 57 0.44 2.26 130.19 5.8600 0.44 Raw Material 34 0.18 2.79 216.28 0.0422 Raw Material 110 2.21 3.01 208.26 0.0029 Raw Material 9 1.77 3.10 206.24 0.0017 Raw Material 8 2.65 3.60 184.28 0.0025 Raw Material 49 0.18 4.16 192.30 0.0157 Raw Material 77 0.88 4.42 192.30 0.0144 100% wt. 15.04% wt.

(13) Films formed from the foregoing example compositions and example compositions were tested in accordance with the following general protocols:

(14) A. Fragrance Delivery to a Headspace from Dissolved Film in Water

(15) This test evaluated the relative odor intensity of fragrance delivered from a sample of a PVOH film dissolved in water. For the test were used: (a) samples of PVOH films according to E1, E2, E3, E4, C1, C2 and C3; (b) water at room temperature (20° C.), 3 gallon (approx. 12 liter) containers for containing the water, and (d) odor testing booths, having a volume of 104 cubic feet (2.94 cubic meters).

(16) First, the odor testing booths were purged, equilibrated and placed on test mode. A container was placed in each of the odor testing booths and filled with approx. 6 liters of room temperature water. Thereafter, a 2 inch by 2 inch (5.08 cm by 5.08 cm) sample of PVOH films according to E1, E2, E3, E4, C1, C2 and C3, each weighing 0.15 grams, were individually delivered to different buckets in different odor testing booths; each sample was observed to dissolve in the water of each container in not more than 55 seconds. Subsequently the containers with dissolved PVOH film samples were allowed to equilibrate for 15 minutes. Thereafter members (comprising 30 persons) of a trained panel evaluated the perceived bloom intensity of the fragrance in each odor testing booth and reported their results, on a 10 point scale where a value of “0” was indicative of no perceived fragrance, to a maximum value of “10” which was indicative of a “very strong” fragrance perception. The results were averaged, and are reported (at a 95% confidence level) for each of the PVOH films according to E1, E2, E3, E4, C1, C2 and C3 on the following Table 1.

(17) TABLE-US-00010 TABLE 1 Sample E1 E2 E3 E4 C1 C2 C3 (avg.) score, 4.8 6.0 6.3 6.8 3.3 1.2 1.6 fragrance intensity

(18) As can be seen from the foregoing results of Table 1, PVOH films according to the invention exhibited far superior fragrance delivery to the headspace of each of the odor testing booths, even following a 15 minute residence time. The compositions disclosed on Table 1 demonstrate the utility of the PVOH films of the invention in surface treatment applications, i.e., hard surface treatment compositions.

(19) B. Fragrance Delivery/Malodour Control from Dissolved Film to an Automatic Dishwasher

(20) This test evaluated the relative odor intensity delivered from samples of a PVOH film and their efficacy in providing a fragrance benefit and in controlling malodours in an automatic dishwasher. For the test were used: (a) samples of PVOH films according to E1, E2, E3, E4, C1, C2 and C3 each weighing 0.15 grams and having a dimension of 2 inch by 2 inch (5.08 cm by 5.08 cm); (b) standardized food soils prepared according to the CAM-202E protocol from the IKW method which included both a meat mixture and a fat mixture; and, (c) automatic dishwashers.

(21) According to the test protocol, first food soil malodor was prepared using CAM-202E protocol. Next, automatic dishwashers were cleaned with unscented detergent prior to use. Then, samples of the food soil malodor was placed at the bottom of each automatic dishwasher (35 g of meat mixture and 50 g of fat mixture), and immediately thereafter dishwasher doors were closed and dishwashers were allowed to equilibrate for three days. One such treated dishwasher was later used as a control and was not treated with any of the sample PVOH films according to E1, E2, E3, E4, C1, C2 and C3. On the third day, to the soiled but otherwise empty dishwashers was provided a sample of one of the PVOH films of E1, E2, E3, E4, C1, C2 and C3, and each dishwasher was operated at a “normal” wash cycle setting which provided a water temperature of (45-65° C.); PVOH films of the invention were observed to dissolved in not more than 15 seconds. After completing the “normal” wash cycle, members (comprising 30 persons) of a trained panel evaluated each of the dishwashers for (a) the residual malodor perceived, and (b) the fragrance intensity. For purposes of this evaluation the control dishwasher untreated with any PVOH film was assigned a ranking of “8” for malodor, and the relative perceptions of the panelists were established relative thereto. All rankings were on a 10 point scale where a value of “0” was indicative of no perceived fragrance, or no residual malodour perception, to a maximum value of “10” which was indicative of a “very strong” fragrance perception or residual malodour perception. The results were averaged, and are reported (at a 95% confidence level) for each of the PVOH films according to E1, E2, E3, E4, C1, C2 and C3 on the following Table 2.

(22) TABLE-US-00011 TABLE 2 Sample E1 E2 E3 E4 Control C1 C2 C3 (avg.) score, 3.9 4.2 4.5 4.8 — 2.9 1.2 1.8 fragrance intensity (avg.) score, 4.2 2.8 2.8 2.1 8 5.5 8.5 7.6 residual malodour intensity

(23) C. Fragrance Delivery/Malodour Control from Dissolved Film to an Automatic Washing Machine

(24) This test evaluated the relative odor intensity delivered from samples of a PVOH film and their efficacy in providing a fragrance benefit and controlling musty/mildew malodours in an automatic laundry washing machine. For the test were used: (a) samples of PVOH films according to E1, E2, E3, E4, C1, C2 and C3 each weighing 0.15 grams and having a dimension of 2 inch by 2 inch (5.08 cm by 5.08 cm); (b) a standardized musty/mildew malodour composition (proprietary composition of the Applicant); and, (c) automatic laundry washing machines.

(25) According to the test protocol, each of the automatic laundry washing machines were cleaned with unscented detergent prior to use. Next an aliquot (the same amount was used in each of the tests in each of the washing machines) of the standardized musty/mildew malodour material was placed in each of the washing machines. and immediately thereafter the lids of each of the washing machines was were closed and each of the washing machines were allowed to equilibrate for two days. One such treated washing machine was later used as a control and was not treated with any on of sample PVOH films according to E1, E2, E3, E4, C1, C2 and C3, but rather was only operated using an unscented laundry detergent it is served as a “control” and a reference for residual malodor. On the second day, to the washing machines was provided a sample of one of the PVOH films of E1, E2, E3, E4, C1, C2 and C3, and each of the washing machines was operated wash cycle setting which provided a warm wash (32° C.) and cold rinse (27° C.); PVOH films of the invention were observed to dissolved in not more than 45 seconds. After completing the washing cycle, members (comprising 30 persons) of a trained panel evaluated each of the washing machines for (a) the residual malodor perceived, and (b) the fragrance intensity. For purposes of this evaluation the control washing machine which was operated, but which was untreated with any PVOH film was assigned a ranking of “8” for malodor, and the perceptions of the panelists for the other washing machines were established relative thereto. All rankings were on a 10 point scale where a value of “0” was indicative of no perceived fragrance, or no residual malodour perception, to a maximum value of “10” which was indicative of a “very strong” fragrance perception or residual malodour perception. The results were averaged, and are reported (at a 95% confidence level) for each of the PVOH films according to E1, E2, E3, E4, C1, C2 and C3 on the following Table 3.

(26) TABLE-US-00012 TABLE 3 Sample E1 E2 E3 E4 Control C1 C2 C3 (avg.) score, 4.0 5.3 4.9 6.1 — 2.9 2.5 2.8 fragrance intensity (avg.) score, 4.3 3.5 3.7 3.7 8 5.4 8.6 7.3 residual malodour intensity

(27) D. Fragrance Delivery/Malodour Control from Dissolved Film to Lavatory Appliance (Toilet) This test evaluated the relative odor intensity delivered from samples of a PVOH film and their efficacy in providing a fragrance benefit and controlling malodours in an lavatory appliance, more specifically, a toilet bowl. For the test were used: (a) samples of PVOH films according to E1, E2, E3, E4, C1, C2 and C3; (b) standardized liquid bathroom malodour composition (proprietary composition of the Applicant) (c) absorbent application pads (KIMWIPES) and, (d) toilets, each in a separate testing booth of uniform dimensions.

(28) According to the test protocol, each of the toilets were purged and flushed. Next, an absorbent pad (KIMWIPE) was placed into the bowl of each toilet. Thereafter a 3 gram aliquod of the standardized standardized liquid bathroom malodour material was placed in each of the absorbent pads and the testing booths were closed, and the toilets and booths were allowed to equilibrate for 15 minutes. Next, each of the toilets were flushed. One of the toilets and booths was untreated and used as a “control” for later comparative evaluation of malodors. To each of the other toilets was provided a sample of one of the PVOH films of E1, E2, E3, E4, C1, C2 and C3, to toilet bowls having water at 10° C.; it was observed that PVOH films of the invention dissolved in not more than 120 seconds. The toilets containing the PVOH films were allowed to equilibrate for 15 minutes. Subsequently, members (comprising 30 persons) of a trained panel evaluated each of the toilets for (a) the residual malodor perceived relative to the “control” (was assigned a reference ranking of “8” for malodor), and (b) the fragrance intensity. All rankings were on a 10 point scale where a value of “0” was indicative of no perceived fragrance, or no residual malodour perception, to a maximum value of “10” which was indicative of a “very strong” fragrance perception or residual malodour perception. The results were averaged, and are reported (at a 95% confidence level) for each of the PVOH films according to E1, E2, E3, E4, C1, C2 and C3 on the following Table 4.

(29) TABLE-US-00013 TABLE 4 Sample E1 E2 E3 E4 Control C1 C2 C3 (avg.) score, 3.9 4.3 4.6 5.3 — 2.7 1.2 1.7 fragrance intensity (avg.) score, 4.5 3.5 3.3 3.0 8 5.9 8.8 8.3 residual malodour intensity

(30) As can be appreciated from the reported results, films according to the invention (example) exhibited the desirable film dissolution, fragrance delivery and malodour counteracting features desired of fast dissolving films according to the present invention. In contrast thereto, films of the comparative examples failed to provide desirable film dissolution, fragrance delivery and malodour counteracting features desired of fast dissolving films according to the present invention.