The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2000
Filed:
Aug. 22, 1994
Applicant:
Inventors:
Hans-Jerg Kleiner, Kronberg/Taunus, DE;
Dieter Regnat, Frankfurt am Main, DE;
Gerhard Pfahler, Augsburg, DE;
Assignee:
Clariant GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ; C07F / ;
U.S. Cl.
CPC ...
524126 ; 25240024 ; 558 78 ;
Abstract
The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.