PVA BOTTLES BIODEGRADABLE AND SOLUBLE IN HIGH TEMPERATURE WATER

Abstract

The present invention discloses bottles and containers made up from polyvinyl alcohol composition that are biodegradable and soluble in high-temperature water which can be the best alternative to overcome the destructive effects of existing bottles and plastic containers wherein the said composition comprises water, polyvinyl alcohol, sodium hydroxide solution, stearyl alcohol, glycerine, talc powder as components of the composition.

Claims

1. The biodegradable and soluble in high temperature water bottles made of polyvinyl alcohol” with the following components: TABLE-US-00001 1. Water 40% 2. Polyvinyl alcohol 40% 3. Sodium hydroxide solution 1M  6% 4. Stearyl alcohol  8% 5. Glycerin  2% 6. Talc powder  4%

2. In the combination of the ingredients mentioned in claim No. 1, water is used as the main solvent.

3. In the combination of ingredients mentioned in claim No. 2, 90% of polyvinyl alcohol is used as a base material which is biodegradable and water-soluble.

4. In the product obtained in claim No. 3, sodium hydroxide solution is used as a catalyst.

5. In the product obtained in claim No. 4, the combination of stearyl alcohol and glycerin is used as the Plasticizer substance.

6. In the product obtained in claim No. 5, talc powder is used to increase the mechanical properties.

7. The gel obtained in claim No. 6 is for produce bottles and containers that are biodegradable and soluble in hot water at temperatures above 80° C.

8. The products mentioned in claim No. 7 are quickly solved in water.

9. The products mentioned in claim No. 8 can easily decompose in the environment and in normal conditions.

10. The products mentioned in claim No. 9 are soluble in hot water at temperatures above 80° C.

11. The products mentioned in claim No. 10 do not release any harmful and poisonous residue when decomposed and dissolved in water.

12. The products mentioned in claim No. 11 are completely biodegradable.

13. The products mentioned in claim No. 12 are only soluble in water at temperatures above 80° C. and have a very high resistance to chemical solvents, oils, and so on.

14. The innovative strength point of this invention is the decomposition speed, the ability to decompose in water at a specified temperature without damaging the environment. Also, these types of bottles are suitable for packing types of food, types of liquids,chemicals,oils, agriculture.

Description

DESCRIPTION OF EMBODIMENTS

EXAMPLES

[0037] PVA with a degree of hydrolysis of 90% is used to produce high-temperature water-soluble bottles or biodegradable containers. 1000 g of the PVA is heated and stirred in 1000 g of water at 60° C. for 20 minutes. Then 150 g of 1 M Sodium hydroxide solution is added as catalyst to the obtained PVA gel. To improve the properties of the final product, 200 grams of Stearyl alcohol and 50 g of Glycerin are added to the mixture as a plastisizer. The mixture is stirred for 70 minutes at 80° C. To increase the mechanical property of these products, 70-140 g of powdered Talc is added and stirred at the same temperature for 30 minutes. The obtained gel has a high viscosity, but the product has very good physical properties and has a high dissolution resistance in low temperature water.

[0038] The obtained gel is transferred to the injection machine to produce the bottle, and followed by the injection process the bottle is produced using different molds in different shapes and sizes, with respect to their type of use.

INDUSTRIAL APPLICABILITY

[0039] PVA bottles are biodegradable, soluble in high-temperature water and easily decomposed and restored in nature. Hence, in order to maintain an industrial support for sustainable development and the conservation of natural habitats, the production of a new generation of polymeric materials is on the agenda of many advanced countries and has a special stance. The use of PVA bottles in the food, pharmaceutical, agricultural and other industries has attracted the attention of manufacturers and consumers of these products.

REFERENCE SIGNS LIST

Reference to Deposited Biological Material

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CITATION LIST

Patent Literature

[0040] PTL1:

Non Patent Literature