Fdca-based polyesters
AssigneeDow Global Technologies LLC
InventorsDebkumar Bhattacharjee, Kalyan Sehanobish
Life of this patent
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Abstract
A polymer comprising reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of 2,5-furan dicarboxylic acid (FDCA), or one or more C1 to C10 alkyl diester thereof, and component (b) comprises a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
Claims21
A polymer comprising reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of 2,5-furan dicarboxylic acid (FDCA), or one or more C1 to C10 alkyl diester thereof, and component (b) comprises a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
A method of forming a film or sheet comprising:
- (i) extruding a polymer to form an extrudate;
- (ii) shaping the extrudate by passing it through a flat or annular die;
- and
- (iii) cooling the extrudate to form a film or sheet having a machine direction and a cross direction;
- wherein the polymer comprises reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of 2,5-furan dicarboxylic acid (FDCA), or one or more C1 to C10 alkyl diester thereof, and component (b) comprises a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
A film or sheet of one or more layers, wherein at least one layer comprises polymer comprising the reaction product of (a) one or more diacid or diester thereof, and (b) one or more polyol, wherein component (a) comprises 5 to 100 mole %, based on the total amount of component (a), of furan dicarboxylic acid (FDCA), or one or more C1 to C10 alkyl diester thereof, and component (b) comprises a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, or 2,2,4,4-tetramethyl-1,3-cyclobutanediol, or combinations thereof.
A barrier film comprising a polyester-based polymer with (a) an O2 gas permeability of 0.4 cc-mil/100 in.2 24 hrs atm (7.9 cc. 20 μ/m2 24 hrs atm) at 50% relative humidity (ASTM D-3985) or less, (b) a moisture permeability of 0.5 g mil/100 in.2 24 hrs atm (9.8 g. 20 μ/m2 24 hrs atm) at 38° C. (ASTM F-1249) or less, and (c) a glass transition temperature (Tg) of 100° C. or higher.
Dependencies are inferred from the claim text.