Method to establish viscosity as a function of shear rate for in-situ polymerized nanonylon via chain extension
AssigneePolyOne Corporation
InventorJoseph C. Golba
Life of this patent
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Abstract
Chain-extended nanonylon is made from the reaction of in-situ polymerized nanonylon and chain-extending agents. Knowing the viscosity/shear rate curve for a thermoplastic polymer to be replaced, such as nylon, the method of the present invention allows via adjustment of organoclay concentration and chain extension of the nylon polymer and other reaction factors to achieve a chain-extended, in-situ polymerized nanonylon to have a viscosity/shear rate curve that essentially matches the viscosity/shear rate curve for that neat nylon within a commercially operable shear rate.
Claims9
A multi-layer blown film article comprising a coextruded layer of chain-extended nanonylon, wherein the chain-extended nanonylon comprises a concentration of organoclay of greater than about 3 percent by weight and less than about 8 percent by weight of the chain-extended nanonylon, wherein the chain-extended nanonylon is the reaction product of an in-situ polymerized nanonylon and a chain extending agent selected from the group consisting of carbodiimides, carbodiimide hydrochlorides, multi-functional epoxies, carbonylbiscaprolactames, multi-functional acrylic oligomers, and combinations thereof and, wherein the weight average molecular weight of the in situ polymerized nanonylon has been increased from about 50,000 to 80,000 to from about 85,000 to about 110,000.
Dependencies are inferred from the claim text.