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公开(公告)号：NO132435C
公开(公告)日：1975-11-12
申请号：NO325571
申请日：1971-09-01
Applicant: HOECHST AG
Abstract: Procedure for obtaining stabilized polyoxymethylene molding compounds, characterized in that it comprises: A) mixing: 1) 0.05 to 4% by weight, based on polyoxymethylene, of compounds of the formula ** formula ** Where R1 is a residue of alkyl with 1 to 6 carbon atoms, R2 is a hydrogen atom or an alkyl residue with 1 to 6 carbon atoms, A is a bi- to hexavalent aliphatic hydrocarbon residue, with 1 to 12 carbon atoms, m is 0 or an integer from 1 to 6 and n corresponds to the valence of A, with: 2) 0.01 to 3% by weight, based on polyoxymethylene, of alkaline earth salts of carboxylic acids with 10 to 20 carbon atoms and/or alkaline earth hydroxides and, B) incorporating the obtained mixture into the polyoxymethylene as a stabilizer, either in powder form, through mixers, for example dry mixers or dissolved in a suitable solvent, for example methanol, acetone or methyl chloride, which is stirred on the polymer, returning to evaporating the solvent, optionally then granulating in a commercially available extrusion press. (Machine-translation by Google Translate, not legally binding)
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公开(公告)号：NO132435B
公开(公告)日：1975-08-04
申请号：NO325571
申请日：1971-09-01
Applicant: HOECHST AG
Abstract: Procedure for obtaining stabilized polyoxymethylene molding compounds, characterized in that it comprises: A) mixing: 1) 0.05 to 4% by weight, based on polyoxymethylene, of compounds of the formula ** formula ** Where R1 is a residue of alkyl with 1 to 6 carbon atoms, R2 is a hydrogen atom or an alkyl residue with 1 to 6 carbon atoms, A is a bi- to hexavalent aliphatic hydrocarbon residue, with 1 to 12 carbon atoms, m is 0 or an integer from 1 to 6 and n corresponds to the valence of A, with: 2) 0.01 to 3% by weight, based on polyoxymethylene, of alkaline earth salts of carboxylic acids with 10 to 20 carbon atoms and/or alkaline earth hydroxides and, B) incorporating the obtained mixture into the polyoxymethylene as a stabilizer, either in powder form, through mixers, for example dry mixers or dissolved in a suitable solvent, for example methanol, acetone or methyl chloride, which is stirred on the polymer, returning to evaporating the solvent, optionally then granulating in a commercially available extrusion press. (Machine-translation by Google Translate, not legally binding)
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