Patent · US Expired

Transparent plastic pane containing a copolymer of methylmethacrylate and polyfunctional acrylates

US5700894A · kind A · utility

12Cited by

4References

23Claims

0Family size

Assignee

Roehm GmbH Chemische Fabrik · DE

Inventors

Manfred Krieg · Darmstadt, DE
Christa WEBER · Groß-Umstadt, DE
Peter R. Szigeti · Büttelborn, DE

Key dates

Filing date	Dec 6, 1995
Grant date	Dec 23, 1997
Priority date	—
Expiry date	Dec 6, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F265/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A transparent plastic pane for an aircraft canopy consisting essentially of a copolymer of methylmethacrylate and polyfunctional acrylates, wherein the content of methylmethacrylate is greater than about 95 wt. % and the content of polyfunctional acrylates is 0.5 to 5% of the copolymer, and which is obtained by cast polymerization, whereby the temperature for final polymerization is maintained at 110.degree. C. to 130.degree. C. for at least 5 hours.

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