Patent · US Expired

Tinted plexiglass with organic pigments

US5387634A · kind A · utility

2Cited by

3References

16Claims

0Family size

Assignee

Roehm GmbH Chemische Fabrik · DE

Inventors

Hans Lichtenstein · Reinheim, DE
Silvia Ebert · Darmstadt, DE
Manfred Krieg · Darmstadt, DE

Key dates

Filing date	Jan 15, 1993
Grant date	Feb 7, 1995
Priority date	—
Expiry date	Jan 15, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/09
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Opaque tinted acrylic glass produced with organic pigments or with organic dyes, which in addition to the colorant, also contains an acid in the polymer matrix, exhibits improved resistance to weathering.

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