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AssigneeStichting Onderzoek en Ontwikkeling Noord-Nederland (SOONN)
InventorsGerrit Eggink, Martin Dinant Northolt
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A method for producing a biologically degradable polyhydroxyalkanoate coating in the form of an elastomeric film, wherein an aqueous dispersion of polyhydroxyalkanoate or a mixture of polyhydroxyalkanoates is prepared and the dispersion is applied to the surface to be coated, after which water is made or allowed to evaporate to obtain a polyhydroxyalkanoate film, the film formation taking place at a temperature lower than the melting point of the polyhydroxyalkanoate, such a temperature even for example being more than 35.degree. C. below the melting point and in which the polyhydroxyalkanoate used is a polymer which is made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon-chain length of 6-14 and/or is a Pseudomonas polyhydroxyalkanoate other than a polymer or copolymer of .beta.-hydroxyvalerate or .beta.-hydroxybutyrate, without requiring additional steps to render the film elastomeric. Product coated with such a polyhydroxyalkanoate film, in particular a coated product to be applied to or consumed by a human being or animal or a product which must not be exposed to a temperature equal to or more than 100.degree. C., such as cheese.
Method for producing a biologically degradable polyhydroxyalkanoate coating on a product in the form of an elastomeric film, wherein an aqueous dispersion of polyhydroxyalkanoate or a mixture of polyhydroxyalkanoates is prepared and the dispersion is applied to the edible surface to be coated, after which water is made or allowed to evaporate to obtain a polyhydroxyalkanoate film, wherein the film formation takes place at a temperature below the melting point of the polyhydroxyalkanoate, and wherein the polyhydroxyalkanoate used is a polymer which is made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon-chain length of 6-14, said method for producing an elastomeric film being carried out in absence of further steps of hot fusion, hot pressing or contact with chloroform or halogenated solvents to obtain the elastomeric characteristic.
An edible product coated with an elastomeric polyhydroxyalkanoate film, wherein the film comprises polyhydroxyalkanoate made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon-chain length of 6-14.
Elastomeric edible film of polyhydroxyalkanoate, wherein the polyhydroxyalkanoate is made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon-chain length of 6-14.
An edible aqueous dispersion of polyhydroxyalkanoate made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon chain length of 6-14.
Dependencies are inferred from the claim text.