Patent · US Active

PMMA-based cast polymers having improved mechanical properties

US12187867B2 · kind B2 · utility

0Cited by

5References

16Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Thomas Richter · Wauseon, US
Christoph Seipel · Babenhausen, DE
Kay Bernhard · Darmstadt, DE

Key dates

Filing date	Jul 3, 2020
Grant date	Jan 7, 2025
Priority date	—
Expiry date	Jul 3, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/12
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A composition can be used for producing a PMMA-based cast polymer with a low styrene content using urea (derivatives) as a formulation constituent, and a hydrophilic inorganic compound as a filler. It is possible to produce PMMA-based cast polymers and mouldings having surprisingly high mechanical stability from the composition.

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