Methods for processing poly(cyclohexylenedimethyleneterephthalate) and products produced therefrom
OwnerGerald Keepinventor
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Abstract
The present invention is a method for making an article, such as a fiber, filament, monofilament, film, sheet, nonwoven, or parison, etc., including a poly(cyclohexylenedimethylene terephthalate) (PCT) polymer. A polymeric PCT crystallization modifying additive is added to a PCT polymer in an amount sufficient to suppress crystallization of an article formed of a melt of the PCT polymer as the article cools, yet without preventing crystallization of the PCT polymer when the article is subsequently oriented.
Claims39
A method for making an article including a (cyclohexylenedimethylene terephthalate) (PCT) polymer, the method comprising:
- adding a polymeric PCT crystallization modifying additive to a PCT polymer in an amount ranging from about 0.3 to about 5 weight percent, based on the total weight of the additive and PCT polymer;
- forming an intermediate article from a melt of said additive and PCT polymer;
- and
- cooling or quenching said intermediate article, wherein said additive retards crystallization of the PCT polymer as the article cools without preventing crystallization of the PCT polymer when said intermediate article is oriented after said cooling step.
An oriented article having crystalline properties, comprising a poly(cyclohexylenedimethylene terephthalate) (PCT) polymer and a polymeric PCT crystallization modifying additive in an amount ranging from about 0.3 to about 5 weight percent, based on the total weight of the PCT polymer and the additive.
An undrawn article, comprising a substantially non-crystalline poly(cyclohexylenedimethylene terephthalate) (PCT) polymer and a polymeric PCT crystallization modifying additive in an amount ranging from about 0.3 to about 5 weight percent, based on the total weight of the PCT polymer and the additive, wherein said PCT polymer comprises latent crystallization properties so that the PCT polymer crystallizes when the intermediate article is drawn.
A method for making a polymer composition useful for the production of crystalline articles formed of poly(cyclohexylenedimethylene terephthalate) (PCT) polymer, comprising adding a polymeric PCT crystallization modifying additive to a PCT polymer in an amount ranging from about 0.3 to about 5 weight percent, based on the total weight of the additive and PCT polymer, wherein said additive retards crystallization of the PCT polymer as an intermediate article made of a melt thereof cools without preventing crystallization of the PCT polymer when said intermediate article is oriented after cooling or quenching.
A polymer composition useful for the production of crystalline articles formed of poly(cyclohexylenedimethylene terephthalate) (PCT) polymer, comprising:
- a poly(cyclohexylenedimethylene terephthalate ) (PCT) polymer;
- and
- a polymeric PCT crystallization modifying additive in an amount ranging from about 0.3 to about 5 weight percent, based on the total weight of the additive and PCT polymer, wherein said additive retards crystallization of the PCT polymer as an intermediate article made of a melt thereof cools without preventing crystallization of the PCT polymer when said intermediate article is oriented after cooling or quenching.
Dependencies are inferred from the claim text.