Verfahren zur Herstellung von Gebilden aus Polyamiden mit verbesserter Lichtbeständigkeit

The light stability of polyamide structures is improved by adding to the polyamide or to the starting materials used for the manufacture thereof, a polyphosphate complex produced by reacting a salt of cobalt, nickel, chromium, copper or manganese with an alkali metal polyphosphate or an alkali metal...

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Bibliographic Details
Main Authors GEWEHR,RUDOLF,DR, BRANDES,JUERGEN,DR
Format Patent
LanguageGerman
Published 31.10.1963
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:The light stability of polyamide structures is improved by adding to the polyamide or to the starting materials used for the manufacture thereof, a polyphosphate complex produced by reacting a salt of cobalt, nickel, chromium, copper or manganese with an alkali metal polyphosphate or an alkali metal polymetaphosphate. The preferred polyphosphate complexes are those made by reacting a salt of cobalt, nickel, chromium, copper or manganese with a trisodium or hexasodium polyphosphate or polymetaphosphate. In the Examples: (1) aqueous manganese hexametaphosphate and (2) a corresponding cobalt complex are added to shreaded polycaprolactam containing titanium dioxide.ALSO:Manganese hexametaphosphate solution is made by mixing an aqueous solution of manganese acetate with a solution of hexasodium hexametaphosphate containing 1.2 times the theoretical quantity of hexasodium hexametaphosphate required to react with the manganous acetate and drying in a drying chamber,
Bibliography:Application Number: CH19590069017