Photodegradation and heat-seal agents for matrix resins or...

Details Photodegradation and heat-seal agents for matrix resins or... Photodegradation and heat-seal agents for matrix resins or...

C - Chemistry, Metallurgy

08

L

403/52, 400/5403

C08L 73/00 (2006.01) C08J 9/00 (2006.01)

Patent

CA 2019354

ABSTRACT A synergistic mixture of the anatase form of TiO2 and a CO-containing olefin (esp. ethylene) copolymer beneficially provides a means for enhancing and regulating the photodegradation rate of various matrix plastics and resins. The mixture itself may be used directly for making some polymeric articles such as films, bags, packages,and the like or can be used as an additive (e.g. a masterbatch additive) for providing photodegradation to matrix polymers, plastics or resins. It can also include other additives which beneficially contribute to the regulation of the photodegradation rate, such as rutile TiO2 and/or other UV-sensitive or UV-absorbent or UV-stabilizing materials. Furthermore, the presence of TiO2 and a CO- containing olefin (esp. ethylene) copolymer in another olefin polymer or copolymer beneficially provides a wider heat seal temperature range for the other polymer. For this heat seal temperature range effect, any of the TiO2 varieties may be used if they have acid surfaces. 36,159A-F

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