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公开(公告)号：SE332896B
公开(公告)日：1971-02-22
申请号：SE728860
申请日：1960-07-27
Applicant: HOECHST AG
Inventor： FISCHER E , KUELLMAR K , WEISSERMEL K
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公开(公告)号：SE324240C
公开(公告)日：1974-01-17
申请号：SE1431165
申请日：1965-11-05
Applicant: HOECHST AG
Inventor： WEISSERMEL K , KUELLMAR K , REIHER M , FISCHER E
Abstract: A polyoxymethylene of high molecular weight is prepared by polymerizing trioxane by bulk polymerization in the absence of an inert solvent and in the presence of a cationic catalyst. Specified catalysts are borontrifluoride, stannic chloride, antimony pentachloride, methyl aluminium dichloride, methyl tin trichloride, an organo-aluminium or organo-tin compound in combination with an alpha-halogenated ether, saline compounds of halides of boron, iron, tin and antimony (but not antimony fluoride) where an aryldiazonium-fluoroborate is the preferred saline compound, an aryldiazonium salts. The catalyst may be diluted with an inert medium.
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公开(公告)号：SE320505B
公开(公告)日：1970-02-09
申请号：SE1431265
申请日：1965-11-05
Applicant: HOECHST AG
Inventor： WEISSERMEL K , FISCHER E , KUELLMAR K , REIHER M
Abstract: A polyoxymethylene of high molecular weight is prepared by polymerizing trioxane by bulk polymerization in the absence of an inert solvent and in the presence of a cationic catalyst. Specified catalysts are borontrifluoride, stannic chloride, antimony pentachloride, methyl aluminium dichloride, methyl tin trichloride, an organo-aluminium or organo-tin compound in combination with an alpha-halogenated ether, saline compounds of halides of boron, iron, tin and antimony (but not antimony fluoride) where an aryldiazonium-fluoroborate is the preferred saline compound, an aryldiazonium salts. The catalyst may be diluted with an inert medium.
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Patent Agency Ranking
公开(公告)号：FI40233B
公开(公告)日：1968-07-31
申请号：FI192962
申请日：1962-10-25
Applicant: HOECHST AG
Inventor： GUTWEILER K , FISCHER E , KUELLMAR K , BIER G
Abstract: A trioxane graft polymer is prepared by polymerizing trioxane in the presence of a Lewis acid and at least one primary polymer selected from the group consisting of polyethers, polyether acetals and polyacetals. The polymerization may be effected by adding the trioxane to a mixture of a polymer and Lewis acid, or by adding the acid to a mixture of trioxane and polymer or by mixing the trioxane and polymer, cooling this mixture to below its melting-point contacting with boron trifluoride gas and polymerizing at above the melting-point of trioxane. The Lewis acid may be BF3, BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, the reaction product of borontrifluoride with dimethyl ether, methylethylether, diethyl-ether, di-isoamyl ether, tetrahydrofuran or tetrahydropyrene, an oxon-ium salt of boron trifluoride, a substituted diazonium salt containing the BF4-, ClO4- or PF6-anion which is either light active or thermoactive. Many catalysts are listed. Specifications 886,982 and 919,499 are referred to.
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公开(公告)号：FI43122B
公开(公告)日：1970-10-01
申请号：FI88664
申请日：1964-04-24
Applicant: HOECHST AG
Inventor： GUTWEILER K , FISCHER E , KUELLMAR K
Abstract: A solution or dispersion obtained by heating, in trioxane, a polyformal of formula -([-O-A-(OCH2)m-])n-where A is a straight-chained or branched saturated or olefinically unsaturated aliphatic hydrocarbon radical containing at least two carbon atoms and which may contain a halogen-substituted aliphatic side chain, or a cycloaliphatic radical or an aralkyl radical, m is a whole number from 1 to 20 and n is a whole number, is polymerized by cooling once or several times to a temperature at least that of the phase transition from the liquid to the solid phase. The polyformal may have been obtained by homopolymerization of a cyclic formal or copolymerization of a cyclic formal or cyclic ether with trioxane, in the presence of a cationic catalyst, and the copolymerization reaction may be used to produce the solution or dispersion of polyformal in trioxan which is then subjected to the further polymerization. Alternatively the polyformal may be obtained by polycondensation of a dihydric alcohol or a dihydric ol-thiol compound with formaldehyde. Specified catalysts are boron fluoride, its complexes, substituted diazonium salts, other Lewis acids e.g. tin tetrachloride and trimethyl oxonium tetrachloroferriate.
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公开(公告)号：SE324455B
公开(公告)日：1970-06-01
申请号：SE1429369
申请日：1969-10-17
Applicant: HOECHST AG
Inventor： WEISSERMEL K , KUELLMAR K , REIHER M , FISCHER E
Abstract: A polyoxymethylene of high molecular weight is prepared by polymerizing trioxane by bulk polymerization in the absence of an inert solvent and in the presence of a cationic catalyst. Specified catalysts are borontrifluoride, stannic chloride, antimony pentachloride, methyl aluminium dichloride, methyl tin trichloride, an organo-aluminium or organo-tin compound in combination with an alpha-halogenated ether, saline compounds of halides of boron, iron, tin and antimony (but not antimony fluoride) where an aryldiazonium-fluoroborate is the preferred saline compound, an aryldiazonium salts. The catalyst may be diluted with an inert medium.
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公开(公告)号：SE324240B
公开(公告)日：1970-05-25
申请号：SE1431165
申请日：1965-11-05
Applicant: HOECHST AG
Inventor： WEISSERMEL K , KUELLMAR K , REIHER M , FISCHER E
Abstract: A polyoxymethylene of high molecular weight is prepared by polymerizing trioxane by bulk polymerization in the absence of an inert solvent and in the presence of a cationic catalyst. Specified catalysts are borontrifluoride, stannic chloride, antimony pentachloride, methyl aluminium dichloride, methyl tin trichloride, an organo-aluminium or organo-tin compound in combination with an alpha-halogenated ether, saline compounds of halides of boron, iron, tin and antimony (but not antimony fluoride) where an aryldiazonium-fluoroborate is the preferred saline compound, an aryldiazonium salts. The catalyst may be diluted with an inert medium.
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公开(公告)号：SE312441B
公开(公告)日：1969-07-14
申请号：SE1146862
申请日：1962-10-25
Applicant: HOECHST AG
Inventor： GUTWEILER K , FISCHER E , KUELLMAR K , BIER G
Abstract: A trioxane graft polymer is prepared by polymerizing trioxane in the presence of a Lewis acid and at least one primary polymer selected from the group consisting of polyethers, polyether acetals and polyacetals. The polymerization may be effected by adding the trioxane to a mixture of a polymer and Lewis acid, or by adding the acid to a mixture of trioxane and polymer or by mixing the trioxane and polymer, cooling this mixture to below its melting-point contacting with boron trifluoride gas and polymerizing at above the melting-point of trioxane. The Lewis acid may be BF3, BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, the reaction product of borontrifluoride with dimethyl ether, methylethylether, diethyl-ether, di-isoamyl ether, tetrahydrofuran or tetrahydropyrene, an oxon-ium salt of boron trifluoride, a substituted diazonium salt containing the BF4-, ClO4- or PF6-anion which is either light active or thermoactive. Many catalysts are listed. Specifications 886,982 and 919,499 are referred to.
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