Erucamide-free closure and liner compositions

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Universal under the trade name CRODA EBS. A preferred amide for use in the present invention is stearamide.

An oxidized polyethylene is also present, with the saturated amide, as a sliding aid in the

5 Composition of the present invention. Oxidized polyethylenes are commercially available from Honeywell under the trade name of AC, naming a particularly preferred version or otherwise being called "AC 629A". The range of a sliding aid in the composition is from 0.01 to 8 parts based on 100 parts of the polymer or the base polymers.

10 Optional components for use in the compositions and methods of the invention include pigments, antioxidants, stabilizers, UV stabilizers, UV absorbers, molecular sieves, hydrocarbon oils, phthalate ester plasticizers, epoxidized soybean oil, foaming agents, Acrylic processing aids, fillers, and nanocomposites. Additionally, active packaging components such as oxygen scavengers, aldehyde scavengers, antimicrobials and potentiating agents can be included

fifteen flavor.

Illustrative compositions of the invention may be formed, for example, in food or beverage containers, closures, or closure sealants such as coverings for lids.

twenty The sliding aid compositions are also described herein. An illustrative sliding aid composition for use in container closures and seal sealants comprises: a silicone (for example, a siloxane, an organosiloxane such as poly (dimethyl) siloxane having an average molecular weight not less than 40,000, being present said silicone in an amount not less than 0.01 parts and not more than 10 parts based on 100 parts of said polymer or base polymers, and a sliding aid which

25 comprises a saturated amide, an oxidized polyethylene, or mixture thereof; said sliding aid being in an amount not less than 0.01 parts and not more than 8 parts based on 100 parts of said polymer or base polymers.

The above embodiments and examples are provided for illustrative purposes only and are not intended to limit the scope of the invention. In the examples, the following abbreviations are used:

<dl><dt>EVA-1 </dt><dd>Ethylene-vinyl acetate copolymer, 14% VA </dd></dl>

<dl><dt>EVA-2 </dt><dd>Ethylene-vinyl acetate copolymer, 9% VA </dd></dl>

<dl><dt>EP </dt><dd>Ethylene-propylene copolymer </dd></dl>

<dl><dt>ER </dt><dd>Crodamide ™ ER </dd></dl>

<dl><dt>MR </dt><dd>Crodamide ™ SR </dd></dl>

<dl><dt>EBS </dt><dd>Crodamide ™ EBS </dd></dl>

<dl><dt>Si1 </dt><dd>Dow Corning ™ 200, 60000cst fluid </dd></dl>

<dl><dt>Yes 2 </dt><dd>Dow Corning 200 ™ fluid, 100000cst </dd></dl>

<dl><dt>Yes 3 </dt><dd>Dow Corning ™ MB50-320 </dd></dl>

<dl><dt>Si4 </dt><dd>Dow Corning ™ MB50-002 </dd></dl>

<dl><dt>AO </dt><dd>antioxidant </dd></dl>

<dl><dt>BLUE </dt><dd>pigment </dd></dl>

<dl><dt>OXY</dt><dd> Oxidized polyethylene </dd></dl>

<dl><dt>UV1</dt><dd> Tinuvin ™ 622 </dd></dl>

<dl><dt>UV2</dt><dd> Uvinul ™ 3030 </dd></dl>

Example 1 (Not part of the invention)

The compositions in Table 1 below were mixed, extruded into films, and discs shattered

35 1.54 cm (1 inch). The discs were then inserted into 28 mm polypropylene caps, designed for carbonated beverage applications. The caps were then applied to 0.59 L (20 oz) PET bottles filled with water using a commercial application machine. The bottles were stored at room temperature for less than a week and more than 24 hours, after which, the force required to remove the lid was measured and any breakage, chafing or perforation of the coating was noted.

40

4 Table 1

<dl><dt>TO </dt><dd>B C D AND F T </dd></dl>

<dl><dt>EVA-1 </dt><dd> 90 90 90 90 90 90 90 </dd></dl>

<dl><dt>EP </dt><dd> 10 10 10 10 10 10 10 </dd></dl>

<dl><dt>AO </dt><dd> 0,1 0,1 0,1 0,1 0,1 0,1 0,1 </dd></dl>

<dl><dt>BLUE </dt><dd> 0,8 0,8 0,8 0,8 0,8 0,8 0,8 </dd></dl>

<dl><dt>ER </dt><dd> 0 1 0 0 0 0 0 </dd></dl>

<dl><dt>EBS </dt><dd> 0 0 1,5 0 0 0 0 </dd></dl>

<dl><dt>MR </dt><dd> 0 0 0 1,5 0 0 0 </dd></dl>

<dl><dt>OXP </dt><dd> 0 0 0 1 0 0 </dd></dl>

<dl><dt>Si1 </dt><dd> 0 0 0 0 0 1 0 </dd></dl>

<dl><dt>Yes 2 </dt><dd> 0 0 0 0 0 0 0 </dd></dl>

<dl><dt>Yes 3 </dt><dd> 0 0 0 0 0 0 2 </dd></dl>

<dl><dt> image3 </dt><dd /></dl>

<dl><dt>Extraction torque, in kg. </dt><dd> &gt; 10,70 4,81 &gt; 10,98 9,07 9,34 7,57 5,99 </dd></dl>

<dl><dt>Perforation / chafing</dt><dd> 100% 10% 70% 80% 40% 100% 100% </dd></dl>

As shown above, neither the lubricant nor the sliding aid alone provided the same degree of performance as the erucamide. It is believed that perforation and / or chafing of the coating are

5 caused by the surface of the bottle that breaks the coating. In the food and beverage industry, this is considered unacceptable, as it can cause contamination of the container. An insufficient lubrication / sliding property on the surface of the coating will make it worse.

Example 2

10 In accordance with the procedure described above for Example 1, the following compositions were applied to the caps and tested, as shown in Table 2 below.

Table 2

<dl><dt>TO </dt><dd>B C </dd></dl>

<dl><dt>EVE </dt><dd> 90 90 90 </dd></dl>

<dl><dt>EP </dt><dd> 10 10 10 </dd></dl>

<dl><dt>AO </dt><dd> 0,1 1 0,1 </dd></dl>

<dl><dt>BLUE</dt><dd> 0,8 0,8 0,8 </dd></dl>

<dl><dt>Yes 3 </dt><dd> 3 3 0 </dd></dl>

<dl><dt>Yes 2 </dt><dd> 0 0 1,5 </dd></dl>

<dl><dt>MR </dt><dd> 0 1 1 </dd></dl>

<dl><dt>OXP</dt><dd> 1,5 0 0,5 </dd></dl>

<dl><dt>Extraction torque, in kg. </dt><dd> 13,6 10,3 12,0 </dd></dl>

<dl><dt>Perforation / chafing</dt><dd> 0% 0% 14% </dd></dl>

These data indicate that by using a mixture of siloxanes and ethylenically saturated amides and / or oxidized polyethylene, combined, a yield equal to that of erucamide is provided.

5

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stored at 46.11 ° C for four days, removed and kept at 20 ° C for one day. Three discs were removed from the glass jars, and two were inserted into 0.59 L PET bottles and one disc was inserted into a commercial 28 mm cap. The bottles were filled with distilled water, capped, and stored at 46.11 ° C for 6 days, then stored at 20 ° C. Water samples were provided to a trained sensory panel and evaluated using the flavor profile method, which is a recognized industry standard. The erucamide-free formulation had systematically lower taste and odor intensities than the erucamide control.

Table 4

<dl><dt>TO </dt><dd>B </dd></dl>

<dl><dt>EVA-1 </dt><dd> 90 90 </dd></dl>

<dl><dt>EP </dt><dd> 10 10 </dd></dl>

<dl><dt>AO </dt><dd> 0,1 0,1 </dd></dl>

<dl><dt>BLUE</dt><dd> 0,8 0,8 </dd></dl>

<dl><dt>Erucamida</dt><dd> 0 1 </dd></dl>

<dl><dt>Yes 3 </dt><dd> 0,8 0 </dd></dl>

<dl><dt>Yes 2 </dt><dd> 1,3 0 </dd></dl>

<dl><dt>MR </dt><dd> 0,3 0 </dd></dl>

<dl><dt>OXP</dt><dd> 0,8 0 </dd></dl>

10 Example 6

In yet another sensory example, the composition in Table 5 was mixed by extrusion, granulated, and re-extruded into tape form. A sample of the commercially used coating compound used for the

fifteen Mineral water is extruded in the form of tape and used as a control. The discs are shattered from the tapes and inserted into 28mm transparent commercial plastic caps. Clear glass bottles are filled with water, with a volume of 265 ml, with an empty space of 5% by volume, and they closed their hands. The bottles were placed in an apparatus to measure the effect of the sun under the following conditions:

Xenon NXE-1500A bulb

twenty Quartz filter: 290 nm Distance from the filter to the lid: 17 cm. Exposure time: 42 hours.

A panel trained in the use of the triangular test method then evaluated the water samples. 25 Table 5

<dl><dt>TO </dt><dd /></dl>

<dl><dt>Si4 </dt><dd> 0,8 </dd></dl>

<dl><dt>Yes 2 </dt><dd> 1,3 </dd></dl>

<dl><dt>MR </dt><dd> 0,3 </dd></dl>

<dl><dt>OXP </dt><dd> 0,8 </dd></dl>

<dl><dt>EVA-1 </dt><dd> 100 </dd></dl>

<dl><dt>AO </dt><dd> 0,1 </dd></dl>

<dl><dt>BLUE </dt><dd> 0,8 </dd></dl>

<dl><dt>UV1 </dt><dd> 0,3 </dd></dl>

<dl><dt>UV2 </dt><dd> 0,25 </dd></dl>

<dl><dt>Sensory results compared to commercial control </dt><dd /></dl>

<dl><dt>Significance </dt><dd> 96% </dd></dl>

<dl><dt>Difference </dt><dd> 6 </dd></dl>

<dl><dt>Preference </dt><dd>TO </dd></dl>

7

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