Polymeric Compositions For Sustained Release Of Volatile Materials
AssigneeThe Procter & Gamble Company
InventorsCalum MACBEATH, Italo CORZANI, Lamia Delphine MIMASSI
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Abstract
A polymeric composition comprising a copolymer of ethylene with at least another monomer comprising at least a heteroatom, a tackifier, less than 10% of a compatible plasticizer or blend of plasticizers and a volatile material. The compositions are able to deliver effectively the volatile material incorporated for a long time and also have good adhesion properties on most substrates.
Claims13
A polymeric composition comprising:
- a) a copolymer of ethylene with at least another monomer comprising at least a heteroatom
- b) a tackifier,
- c) up to 10% by weight of the total weight of the composition of a compatible plasticizer or blend of plasticizers,
- d) a volatile material.
A polymeric composition according to any preceding claim wherein the tackifier comprises an ester group.
A polymeric composition according to any preceding claim wherein the copolymer is an ethylene-vinylacetate copolymer.
A polymeric composition according to any preceding claim wherein the copolymer is from 5% to 75%, preferably from 10% to 50% by weight of the polymeric composition, the tackifier is from 10% to 60%, preferably from 15% to 40% by weight of the copolymer and the volatile material is more than 10%, preferably more than 20%, more preferably more than 30% of the total weight of the composition.
A polymeric composition according to any preceding claim not comprising a compatible plasticizer.
A polymeric composition according to any preceding claim, wherein the volatile material is less than 90% of the total weight of the composition.
A polymeric composition according to any preceding claim wherein the volatile material is a perfume.
A polymeric composition according to any preceding claim wherein the tackifier has a Tg higher than 50° C.
A polymeric composition according to any preceding claim wherein the tackifier is selected from rosin and its derivatives which are solid at room temperature.
A process for the manufacturing of a closed container comprising the steps of applying a polymeric composition according to any of the preceding claim onto a portion of its internal surface.
Dependencies are inferred from the claim text.