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Bio-degradable compositions and use thereof

Inactive Publication Date: 2014-12-04
BIOPLASMAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides bio-degradable compositions that can be used as sealants or adhesives in agriculture and gardening. These compositions have the advantage of being able to break down naturally at different rates, allowing for customization of the stability of the products they are applied to. The compositions are made up of a bio-degradable polymer or co-polymer and an organic non-hydroxylic solvent. They can also contain one or more solvents that enhance desired properties, such as elasticity.

Problems solved by technology

The pots then end up in landfills or garbage dumps, where they remain for a very long time because they are not biodegradable.
However, methods of irrigation and the humid environment in many nurseries cause the external surfaces of pots to be exposed to moisture, so that a sealant on the interior of a plant pot does not prevent degradation of the pot while still on the shelf in the nursery.
Known bio-degradable plant pots and plugs are not suited for use with seepage irrigation systems and many other irrigation systems used in green houses and nurseries since they are susceptible to disintegration while still in the nursery or green house due to exposure to the extreme moisture in green house and nursery environments.

Method used

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  • Bio-degradable compositions and use thereof
  • Bio-degradable compositions and use thereof
  • Bio-degradable compositions and use thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

Rooting Plugs

[0068]

Composition I:1 gr PLA40 ml EtOAc10 ml DCM

[0069]Rooting plugs of 2×3 cm were prepared using an Ellegaard system. A finger sized hollow was made in the center of each plug. Each hollow was sprayed with 0.5 cc of composition I using a syringe. Control plugs were left untreated. The plugs were dried in RT over night and a Gypsophila (Baby's Breath) shoot was placed in each of the plugs' hollows. Plugs were irrigated for one month with irrigation from on top.

[0070]Plant Development—Plant development was better in treated plugs. Plants grown in treated plugs had more root mass than the plants grown in control plugs, possibly due to better water retention in the treated plugs.

[0071]Composition stability—Treated plugs were stable after one month in trays. Degradation of treated plugs was observed upon planting in soil (within days of planting).

Composition II0.5 gr PLA35 ml EtOAc10 ml DCM5 ml acetone

[0072]Rooting plugs of 2×3 cm were prepared using an Ellegaard™ system. A...

example 2

Bio-Degradable Plant Pots

[0076]

Composition III:4 gr PLA160 ml EtOAc40 ml DCMComposition IV:4 gr PLA180 ml EtOAc20 ml DCMComposition V:4 gr PLA160 ml EtOAc20 ml DCM20 ml acetone

[0077]Plant pots (7 cm diameter, made of packed saw dust (50%) and starch (50%)) were immersed in compositions III-V until totally coated. The pots were let to air dry at RT for 30-45 minutes. Coated pots were filled with soil (mostly peat). A shoot of mint plant was planted in the soil filled pots. Pots were irrigated once a day such that the soil was always moist, for three months. The pots were buried in soil after three months.

[0078]In addition to using the compositions to coat the pots, compositions were also left to dry in the beaker to examine their different characteristics when dried films

[0079]Plant Development—no negative effect was demonstrated on growth of the mint plants.

[0080]Composition stability—composition IV dried to form a more elastic film than composition III. Composition V could be dilut...

example 3

Bio-Degradable Plates

[0085]

Composition VIII:0.1 gr PLA45 ml EtOAc5 ml DCM

[0086]Paper plates coated with composition VIII are expected to have a long shelf life and to disintegrate a few days after being continuously exposed to moisture (e.g., the environment in a garbage dump).

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Abstract

A bio-degradable composition comprising 0.2%-10% w / w bio-degradable polymer and an organic non hydroxylic solvent may be used as a coating or adhesive in agriculture and home gardening as well as in other industries.

Description

FIELD OF THE INVENTION[0001]The invention relates to biodegradable compositions and their use, especially as sealants or adhesives in agriculture.BACKGROUND[0002]A sealant is usually used to prevent the penetration of substances or pollutants (such as air, gas, dust, fire, smoke or liquid) from one location through a barrier into another. Typically, desirable properties of sealants include insolubility, corrosion resistance, and adhesion. Sealants are used in many industries including in agriculture and in home gardening, typically for preventing moisture from penetrating through barriers. For example, the inside of terra-cotta plant pots may include a layer of sealant to reduce water loss from the pot.[0003]Plant pots are commonly used by nurseries and green houses to grow plants for commercial use. Plants are grown in pots until they are mature enough to be distributed to retail outlets or to consumers. Typically, molded plastic pots are used for growing plants. Consumers that pur...

Claims

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Application Information

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IPC IPC(8): C09D5/00C09J11/06C09J9/00C09D7/00A47G19/03A01G9/02
CPCC09D5/00A47G19/03A01G9/02C09J9/00C08K5/07C09J11/06C08K5/101C08K5/02C09D7/001C08J3/091C08J2300/16C08J2367/04A01G9/0291C09D167/04A01G9/021
Inventor SAMET, CHANOCH
Owner BIOPLASMAR
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