Patent · US Expired

Method for adding inorganic additives to finished polymer melts

US7008978B2 · kind B2 · utility

0Cited by

7References

12Claims

0Family size

Assignee

Sachleben Chemie GmbH · DE

Inventors

Franz Meyers · Charlotte, US
Jurgen Kastner · Eferding, AT
Michael Wedler · Reutlingen, DE
Peter Weiser · Duisburg, DE

Key dates

Filing date	Oct 5, 2001
Grant date	Mar 7, 2006
Priority date	—
Expiry date	Mar 1, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K9/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process is described for the modification of polymer melts by means of finely divided inorganic solid particles (melt modification process), in which a powdery additive which contains the inorganic solid particles with a maximum particle size of 1 μm embedded in finely divided form in a matrix of an organic substance, the organic substance containing one or more of the substances from the group consisting of polyols, polyglycols, polyethers, dicarboxylic acids and derivatives thereof, AH salt, caprolactam, paraffins, phosphoric acid esters, hydroxycarboxylic acid esters and cellulose, is incorporated into the polymer.

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