Patent · US Expired

Copolyester compositions comprising poly(ethylene naphthalate bibenzoate) biaxially oriented copolyester films

US5674589A · kind A · utility

11Cited by

8References

24Claims

0Family size

Assignee

Hoechst Celanese Corporation · US

Inventors

Cynthia Bennett · Wiesbaden, DE
E-Won Choe · Dover, US
John A. Flint · Berkeley Heights, US
Bodo Kuhmann · Runkel, DE

Key dates

Filing date	Jun 2, 1995
Grant date	Oct 7, 1997
Priority date	—
Expiry date	Jun 2, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A copolyester composition comprising poly(ethylene naphthalate bibenzoate) ("PENBB") and 0.001 to 5% by weight of fine silica particles having an average diameter of 0.01 to 3.0 .mu.m. Further, films are made from this copolyester composition.

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