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US 7,833,515 B2Granted
Polymeric compositions for sustained release of volatile materials
AssigneeThe Procter & Gamble Company
InventorsItalo Corzani, Calum Macbeath, Manuel Mariani
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Abstract
A polymeric composition comprising a copolymer obtained from at least one monomer comprising an ether group and at least one monomer not comprising an ether group, a compatible plasticizer and a volatile material is able to provide sustained delivery of the volatile material over a long period of time. Additionally, if the volatile material is a composition formed by several components of different volatility, the compositions of the present invention is able to provide a uniform release of all components of the volatile material.
Claims8
A polymeric composition comprising:
- a) a copolymer comprising at least one ether-substituted monomer and at least one non-ether substituted monomer;
- b) a compatible plasticizer;
- and,
- c) a volatile material;
- wherein said ether-substituted monomer comprises at least 5% of the total weight of said copolymer, and wherein said copolymer comprises from 5% to 75% by weight of said polymeric composition, the compatible plasticizer ranges from 5% to 60% by weight of the polymeric composition, and said volatile material comprises more than 10% of the total weight of the composition.
2 more elements
Dependencies are inferred from the claim text.