Patent · US Active

Polyester compositions containing low amounts of cyclobutanediol and articles made therefrom

US8063173B2 · kind B2 · utility

10Cited by

230References

34Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Emmett Dudley Crawford · Kingsport, US
Thomas Joseph Pecorini · Kingsport, US
Douglas Stephens McWilliams · Kingsport, US
David Scott Porter · Middlebury, US
Gary Wayne Connell · Church Hill, US

Key dates

Filing date	Mar 28, 2006
Grant date	Nov 22, 2011
Priority date	—
Expiry date	Apr 10, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Described as one aspect of the invention are polyesters containing (a) a dicarboxylic acid component having from 70 to 100 mole % of terephthalic acid residues and up to 30 mole % of aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues; and (b) a glycol component having from 11 to 25 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, and 75 to 89 mole % of 1,4-cyclohexanedimethanol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %. The polyesters may be manufactured into articles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.