Aldehyde scavenging compositions and methods relating thereto

Details Aldehyde scavenging compositions and methods relating thereto Aldehyde scavenging compositions and methods relating thereto

C - Chemistry, Metallurgy

08

L

C08L 67/00 (2006.01) B65D 81/24 (2006.01) B65D 85/72 (2006.01) C08J 5/18 (2006.01) C08K 5/17 (2006.01) C08L 67/02 (2006.01) C08L 67/04 (2006.01) C08L 79/02 (2006.01)

Patent

CA 2162840

The present invention relates generally to compositions of polyalkylene imine ("PAI"), particularly polyethylene imine ("PEI") and polyester polymer(s) (including copolymers and derivatives thereof); such compositions can be used in producing films or devices which are capable of scavenging unwanted aldehydes. More specifically, the preferred compositions of the present invention comprise a PAI substantially discontinuous phase and a polyester or copolyester substantially continuous phase in a weight ratio of PAI to polyester polymer of about 0.001-30:100 which optionally also includes a binding agent.

L'invention se rapporte d'une façon générale à des compositions de polyalkylène-imine (PAI), en particulier de polyéthylène-imine (PEI) et de polymère(s) de polyester (y compris des copolymèrs et des dérivés de ceux-ci). Ces compositions peuvent être utilisées pour produire des films ou des dispositifs capables de piéger des aldéhydes non désirés. Les compositions préférées décrites dans cette invention contiennent plus spécifiquement une phase essentiellement discontinue de PAI et une phase essentiellement continue de polyester ou de copolyester, selon un rapport en poids PAI/polymère de polyester compris entre environ 0,001/100 et 30/100, qui peut éventuellement renfermer également un agent de liaison.

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