WATER-SOLUBLE PACKAGE

Abstract

The present invention provides a water-soluble package comprising a water-soluble substrate and a powder coating on an exterior surface of the water-soluble substrate, wherein the water-soluble substrate encloses a composition and the powder coating includes a powdered bittering agent, a method of making such water-soluble packages and their use, in particular for washing dishes or laundering textiles.

Claims

1. A water-soluble package comprising a water-soluble substrate and a powder coating on an exterior surface of the water-soluble substrate, wherein the water-soluble substrate encloses a composition and the powder coating includes a powdered bittering agent, wherein, the powder coating includes 10 wt. % or more of a powdered lubricating agent based on the total weight of the powder coating.

2. The water-soluble package according to claim 1, wherein the powder coating includes 5 to 75 wt. % of the powdered bittering agent based on the total weight of the powder coating.

3. The water-soluble package according to claim 1, wherein the powder coating includes 25 to 95 wt. % of the powdered lubricating agent based on the total weight of the powder coating.

4. The water-soluble package according to claim 1, wherein the powdered bittering agent is selected from the group consisting of denatonium benzoate, denatonium saccharide, quinine, or a salt of quinine.

5. The water-soluble package according to claim 1, wherein the powdered lubricating agent is talc.

6. The water-soluble package according to claim 1, wherein the water-soluble substrate includes polyvinyl alcohol, modified polyvinyl alcohol, polyvinyl acetate, carboxymethylcellulose or hydroxypropyl methyl cellulose.

7. The water-soluble package according to claim 1, wherein the package includes two or more compartments, at least one of the compartments being arranged to enclose the composition or material.

8. A method of producing a water-soluble package, the method including the step of coating a water-soluble substrate enclosing a composition with a powder coating composition, the powder coating composition including a bittering agent and 10 wt. % or more of a lubricating agent based on the total weight of solids and/or non-volatiles in the powder coating composition.

9. (canceled)

Description

DETAILED DESCRIPTION

[0050] The invention will be described in more detail with reference to specific embodiments and examples.

EXAMPLES

General Coating Procedure

[0051] A tub of 35 liquid laundry detergent capsules having a polyvinyl alcohol thin film wall were coated with a powder coating suing the following protocol.

[0052] Protocol [0053] 1) Mill the Bitrex crystals to a fine powder (<180 microns); [0054] 2) Empty full tub of capsules into plastic bag; [0055] 3) Add specified amount of talc powder, when used, to the bag; [0056] 4) Add specified amount of Bitrex powder, when used, to the bag; [0057] 5) Close the bag; [0058] 6) Shake the plastic bag with capsules and Bitrex and/or talc powder for 1 minute; [0059] 7) Place the plastic bag with capsules into the original tub.

[0060] A tub of 35 liquid laundry detergent capsules having a polyvinyl alcohol thin film wall without any powder coating were tested as a control. Talc and Bitrex were added to the bag in the following amounts.

TABLE-US-00001 Example Talc (mg) Bitrex (mg) Control (None added) (None added) 1 73.1 2.91 2 73.1 5.8 3 73.1 11.6 4 73.1 17.4 5 73.1 23.2 6 73.1 29.1 7 73.1 73.1

[0061] Examples 1, 6 and 7 and the Control were submitted to a taste aversion test. Examples 6 and 7 passed the test (namely producing a suitable taste aversion response), whereas Example 1 and the Control failed the test.

[0062] In addition, the Example capsules are relatively stable under simulated age test conditions. In contrast, the Control samples will tend to stick together under simulated age test conditions.