Patent · US Expired

Stabilized halogen-containing polymers

US6531533B1 · kind B1 · utility

8Cited by

11References

14Claims

0Family size

Assignee

Crompton Vinyl AdditivesGmbH · DE

Inventors

Karl-Josef Kuhn · Herbstein, DE
Wolfgang Wehner · Ober-Ramstadt, DE
Rolf Drewes · Bad Bellingen, DE

Key dates

Filing date	Feb 12, 1997
Grant date	Mar 11, 2003
Priority date	—
Expiry date	May 17, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/57
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Halogen-containing polymers or the recyclates thereof are stabilized by the addition of(a) a halogen-containing polymer or a recyclate thereof;(b) at least one zeolite in the form of sodium, potasssium and/or lithium, in particular at least one zeolite of formulaM2O.Al2O3.x SiO2.y H2O  (I),wherein M is Na, K or Li, x is 2 to 12, and y is 1 to 15, with the exception of zeolite A, Na12Al12Si12O48.27 H2O and clinoptilolite Na6Al6Si30O72.2 H2O,(c) at least one organic zinc, aluminium or rare earth compound, and/or(d) at least one organotin compound, as described in more detail in claim 1.

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