Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1999-07-16
2000-08-01
Boykin, Terressa M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528271, C08G 6300
Patent
active
060968540
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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Bradley James R.
Morris John C.
Seo Kab Sik
Boshears B. J.
Boykin Terressa M.
Eastman Chemical Company
Gwinnell Harry J.
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