Patent · US Active

Polyester compositions which comprise cyclobutanediol having certain cis/trans ratios

US7985827B2 · kind B2 · utility

12Cited by

230References

38Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Emmett Dudley Crawford · Kingsport, US
David Scott Porter · Middlebury, US
Gary Wayne Connell · Church Hill, US

Key dates

Filing date	Mar 28, 2006
Grant date	Jul 26, 2011
Priority date	—
Expiry date	May 17, 2027

Classification

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

Abstract

Described are polyester compositions comprising (a) a dicarboxylic acid component comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, wherein said 2,2,4,4-tetramethyl-1,3-cyclobutanediol contains certain cis to trans ratios; and 1,4-cyclohexanedimethanol residues.

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