Blow-molding polyesters from terephthalic acid, 2, 2, 4, 4-tetra

Details Blow-molding polyesters from terephthalic acid, 2, 2, 4, 4-tetra Blow-molding polyesters from terephthalic acid, 2, 2, 4, 4-tetra

1997-12-23

1999-11-23

Acquah, Samuel A.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

528272, 528275, 528281, 528283, 528298, 528308, 5283086, 428364, B29D 2200, B29D 6300, C08G 6300

Patent

active

059896639

ABSTRACT:
The invention relates to a copolyester, having (a) a repeat unit of a dicarboxylic acid component, having from 80 to 100 mole % terephthalic acid or the corresponding ester thereof, and from 0 to 20 mole % of a modifying aromatic dicarboxylic acid having less than or equal to 20 carbon atoms or the corresponding ester thereof, wherein the total mole % of dicarboxylic acid component is equal to 100 mole %; and (b) a repeat unit of a glycol component, having from 5 to 85 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol, ethylene glycol of from 15 to 95 mole %, and at least 1 mole % of a modifying glycol having from 3 to 16 carbon atoms, wherein the total mole % of glycol component is equal to 100 mole %. The invention also relates to a method of making the copolyester described above. The invention also relates to articles made from the copolyesters described above. The invention further relates to a method of determining the melt strength and sag of a polyester.

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Caldwell et al., Defensive Publication T858,012, 858 O.G. 43, Jan. 7, 1969.
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