METHOD FOR PRODUCING DIALKYLPHOSPHINIC ACID SALTS
The invention relates to a process for preparing dialkylphosphinate salts, which comprises a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or alkaline earth metal hydroxide to form a mixture which comprises as main constituents the salts of alkylp...
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| creator | WEFERLING, NORBERT KOLBE, GUENTER SCHMITZ, HANS-PETER |
| description | The invention relates to a process for preparing dialkylphosphinate salts, which comprises a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or alkaline earth metal hydroxide to form a mixture which comprises as main constituents the salts of alkylphosphonous, phosphorous and hypophosphorous acids, b) adjusting the mixture to a pH below 7 and then reacting the mixture with olefins in the presence of a free-radical initiator and c) reacting the dialkylphosphinic acids obtained according to b) and/or alkali metal salts thereof with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkylphosphinate salts. The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention to prepare flame retardants. |
| format | Patent |
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The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention to prepare flame retardants.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ; APPARATUS THEREFOR ; CHEMISTRY ; COMPOUNDS THEREOF ; GENERAL METHODS OF ORGANIC CHEMISTRY ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; ORGANIC CHEMISTRY</subject><creationdate>2002</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020515&DB=EPODOC&CC=EP&NR=1036080B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020515&DB=EPODOC&CC=EP&NR=1036080B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WEFERLING, NORBERT</creatorcontrib><creatorcontrib>KOLBE, GUENTER</creatorcontrib><creatorcontrib>SCHMITZ, HANS-PETER</creatorcontrib><title>METHOD FOR PRODUCING DIALKYLPHOSPHINIC ACID SALTS</title><description>The invention relates to a process for preparing dialkylphosphinate salts, which comprises a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or alkaline earth metal hydroxide to form a mixture which comprises as main constituents the salts of alkylphosphonous, phosphorous and hypophosphorous acids, b) adjusting the mixture to a pH below 7 and then reacting the mixture with olefins in the presence of a free-radical initiator and c) reacting the dialkylphosphinic acids obtained according to b) and/or alkali metal salts thereof with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkylphosphinate salts. The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention to prepare flame retardants.</description><subject>ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM</subject><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>GENERAL METHODS OF ORGANIC CHEMISTRY</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD0dQ3x8HdRcPMPUggI8ncJdfb0c1dw8XT08Y70CfDwDw7w8PTzdFZwdPZ0UQh29AkJ5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BhgbGZgYWBk6GxkQoAQAS0yYw</recordid><startdate>20020515</startdate><enddate>20020515</enddate><creator>WEFERLING, NORBERT</creator><creator>KOLBE, GUENTER</creator><creator>SCHMITZ, HANS-PETER</creator><scope>EVB</scope></search><sort><creationdate>20020515</creationdate><title>METHOD FOR PRODUCING DIALKYLPHOSPHINIC ACID SALTS</title><author>WEFERLING, NORBERT ; KOLBE, GUENTER ; SCHMITZ, HANS-PETER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1036080B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2002</creationdate><topic>ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM</topic><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>GENERAL METHODS OF ORGANIC CHEMISTRY</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>WEFERLING, NORBERT</creatorcontrib><creatorcontrib>KOLBE, GUENTER</creatorcontrib><creatorcontrib>SCHMITZ, HANS-PETER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WEFERLING, NORBERT</au><au>KOLBE, GUENTER</au><au>SCHMITZ, HANS-PETER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR PRODUCING DIALKYLPHOSPHINIC ACID SALTS</title><date>2002-05-15</date><risdate>2002</risdate><abstract>The invention relates to a process for preparing dialkylphosphinate salts, which comprises a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or alkaline earth metal hydroxide to form a mixture which comprises as main constituents the salts of alkylphosphonous, phosphorous and hypophosphorous acids, b) adjusting the mixture to a pH below 7 and then reacting the mixture with olefins in the presence of a free-radical initiator and c) reacting the dialkylphosphinic acids obtained according to b) and/or alkali metal salts thereof with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkylphosphinate salts. The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention to prepare flame retardants.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM APPARATUS THEREFOR CHEMISTRY COMPOUNDS THEREOF GENERAL METHODS OF ORGANIC CHEMISTRY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC CHEMISTRY |
| title | METHOD FOR PRODUCING DIALKYLPHOSPHINIC ACID SALTS |
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