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US 6,271,291 B1Granted
Extrudable masterbatch
AssigneeEastman Chemical Company
InventorsDouglas Stephens McWilliams, Harold Eugene Dobbs, Scott Arnold Hanson, Emily Tedrow Bell
Life of this patent
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Abstract
A novel composition is provided comprising a copolyester having CHDM moieties in amounts of about 1 to about 20 mole percent, and a particular antistat, that is extrudable.
Claims20
A copolyester composition which comprises:
- a. a copolyester comprising
- (1) from about 80 mole percent to about 100 mole percent of an acid selected from the group consisting of terephthalic acid, naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, and mixtures thereof, and, from about 0 to about 20 mole percent of one or more modifying acids, and
- (2) from about 80 mole percent to about 99 mole percent ethylene glycol, and from about 1 mole percent to about 20 mole percent of one or more modifying diols, and
- b. a quaternary ammonium salt having thermal stability at a temperature greater than 200° C. wherein the quaternary ammonium salt is present in an amount ranging from greater than about 1.6 to about 10 percent by weight based on the total composition.
1 more element
Dependencies are inferred from the claim text.