Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hoechst AG
Original Assignee
Farbwerke Hoechst AG
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Publication date
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Priority to ES282231ApriorityCriticalpatent/ES282231A1/en
Publication of ES282231A1publicationCriticalpatent/ES282231A1/en
Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds
(AREA)
Compositions Of Macromolecular Compounds
(AREA)
Abstract
A process for the stabilization of high molecular weight polyacetals, preferably of polyoxymethylenes, as well as copolymers of formaldehyde or trioxane, against thermal degradation and oxidation, characterized in that as stabilizers, compounds of the general formula (I) are used A-CO-NH-CH2-B where A represents a phenol attached with the carbonyl group preferably in the ortho position and B represents a phenol with multiple alcoholic substitution, in which the OH group is attached with the methylene group preferably in the ortho or para position. (Machine-translation by Google Translate, not legally binding)
ES282231A1962-11-071962-11-07A procedure for the stabilization of polyacetals (Machine-translation by Google Translate, not legally binding)
ExpiredES282231A1
(en)
Method for the preparation of a moldeable composition for the production of permanent magnets (Machine-translation by Google Translate, not legally binding)
A method for the production of a phenol-aldehyde resin equipped with a desired softening point (Machine-translation by Google Translate, not legally binding)