US 2003/0158303 A1Published application

Bead polymerizates containing halogen-free phosphourus compounds

AssigneeBayer Aktiengesellschaft

InventorsWolfgang Podszun, Andreas Seidel, Thomas Eckel, Dieter Wittmann, Kamelia Karlou-Eyrisch

Life of this patent

Estimating the term…

Abstract

The present invention relates to novel crosslinked bead polymers having an average particle size of 1 to 1000 μm containing specific, halogen-free phosphorus compounds, to a process for the production of these bead polymers and to the use thereof as flame retardants in thermoplastics.

Claims16

Dependent claims

Crosslinked bead polymers prepared from olefinically unsaturated compounds and at least one halogen-free phosphorus compound having an average particle size of 1 to 1000 μm.

Dependencies are inferred from the claim text.

Facts

Application: 10/220,706Filed 13 Nov 2002
Priority: DE 100 11 543.89 Mar 2000
Published: 21 Aug 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08K 5/52
Phosphorus bound to oxygen: phosphorus bound to oxygen only
C08K 5/0066
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: flame-proofing or flame-retarding additives
C08K 5/523
Esters of phosphoric acids, e.g. of H3PO4: with hydroxyaryl compounds
Y10S 526/909
Synthetic resins or natural rubbers -- part of the class 520 series: polymerization characterized by particle size of product

Family

US 6,936,647 B2Related patent
US 2003/0158303 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results