Process for purification of crude polyether and adsorbent
A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous ma...
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| creator | Takabatake, Harumi Nosu, Tsutomu |
| description | A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous magnesium silicate compound which satisfies the following requirements (1) to (5) in order to reduce the alkali metal content of the crude polyether:
(1) it is represented by the following formula I:
(CaO)
x
.(MgO)
y
.(Al
2
O
3
)
z
.SiO
2
.mH
2
O I
wherein x, y, z and m satisfy the following ranges:
x |
| format | Patent |
| fullrecord | <record><control><sourceid>uspatents_EFI</sourceid><recordid>TN_cdi_uspatents_applications_20040192884</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>20040192884</sourcerecordid><originalsourceid>FETCH-uspatents_applications_200401928843</originalsourceid><addsrcrecordid>eNrjZLAMKMpPTi0uVkjLL1IoKC3KTMtMTizJzM9TyE9TSC4qTUlVKMjPqUwtyUgtUkjMS1FITCnOL0pKzSvhYWBNS8wpTuWF0twMmm6uIc4euqXFBYklQAXF8YkFBTlQ44rjjQwMTAwMLY0sLEyMSVELAO3aNgg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Process for purification of crude polyether and adsorbent</title><source>USPTO Published Applications</source><creator>Takabatake, Harumi ; Nosu, Tsutomu</creator><creatorcontrib>Takabatake, Harumi ; Nosu, Tsutomu</creatorcontrib><description>A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous magnesium silicate compound which satisfies the following requirements (1) to (5) in order to reduce the alkali metal content of the crude polyether:
(1) it is represented by the following formula I:
(CaO)
x
.(MgO)
y
.(Al
2
O
3
)
z
.SiO
2
.mH
2
O I
wherein x, y, z and m satisfy the following ranges:
x<y, z<y, 0 x 0.1, 0.06 y 0.6, 0 z 0.1 and 0.1 m 1.5,
(2) it is amorphous according to the analysis of its powder method X-ray diffraction diagram,
(3) it has a BET specific surface area of 100 to 400 m
2
/g,
(4) it has an alkali metal content of 0.1 wt % or less, and
(5) it has an average particle diameter of 2 to 60 m.
According to the present invention, a purified polyether having an extremely low content of an alkali metal can be obtained effectively.</description><language>eng</language><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040192884$$EPDF$$P50$$Guspatents$$Hfree_for_read</linktopdf><link.rule.ids>230,308,776,869,881,64032</link.rule.ids><linktorsrc>$$Uhttps://patentcenter.uspto.gov/applications/10486402$$EView_record_in_USPTO$$FView_record_in_$$GUSPTO$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Takabatake, Harumi</creatorcontrib><creatorcontrib>Nosu, Tsutomu</creatorcontrib><title>Process for purification of crude polyether and adsorbent</title><description>A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous magnesium silicate compound which satisfies the following requirements (1) to (5) in order to reduce the alkali metal content of the crude polyether:
(1) it is represented by the following formula I:
(CaO)
x
.(MgO)
y
.(Al
2
O
3
)
z
.SiO
2
.mH
2
O I
wherein x, y, z and m satisfy the following ranges:
x<y, z<y, 0 x 0.1, 0.06 y 0.6, 0 z 0.1 and 0.1 m 1.5,
(2) it is amorphous according to the analysis of its powder method X-ray diffraction diagram,
(3) it has a BET specific surface area of 100 to 400 m
2
/g,
(4) it has an alkali metal content of 0.1 wt % or less, and
(5) it has an average particle diameter of 2 to 60 m.
According to the present invention, a purified polyether having an extremely low content of an alkali metal can be obtained effectively.</description><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EFI</sourceid><recordid>eNrjZLAMKMpPTi0uVkjLL1IoKC3KTMtMTizJzM9TyE9TSC4qTUlVKMjPqUwtyUgtUkjMS1FITCnOL0pKzSvhYWBNS8wpTuWF0twMmm6uIc4euqXFBYklQAXF8YkFBTlQ44rjjQwMTAwMLY0sLEyMSVELAO3aNgg</recordid><startdate>20040930</startdate><enddate>20040930</enddate><creator>Takabatake, Harumi</creator><creator>Nosu, Tsutomu</creator><scope>EFI</scope></search><sort><creationdate>20040930</creationdate><title>Process for purification of crude polyether and adsorbent</title><author>Takabatake, Harumi ; Nosu, Tsutomu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-uspatents_applications_200401928843</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Takabatake, Harumi</creatorcontrib><creatorcontrib>Nosu, Tsutomu</creatorcontrib><collection>USPTO Published Applications</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Takabatake, Harumi</au><au>Nosu, Tsutomu</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for purification of crude polyether and adsorbent</title><date>2004-09-30</date><risdate>2004</risdate><abstract>A process for purifying a crude polyether, comprising contacting a crude polyether obtained by addition polymerizing an active hydrogen-containing compound with an alkylene oxide compound in the presence of an alkali metal-containing basic catalyst to an adsorbent comprising a synthesized hydrous magnesium silicate compound which satisfies the following requirements (1) to (5) in order to reduce the alkali metal content of the crude polyether:
(1) it is represented by the following formula I:
(CaO)
x
.(MgO)
y
.(Al
2
O
3
)
z
.SiO
2
.mH
2
O I
wherein x, y, z and m satisfy the following ranges:
x<y, z<y, 0 x 0.1, 0.06 y 0.6, 0 z 0.1 and 0.1 m 1.5,
(2) it is amorphous according to the analysis of its powder method X-ray diffraction diagram,
(3) it has a BET specific surface area of 100 to 400 m
2
/g,
(4) it has an alkali metal content of 0.1 wt % or less, and
(5) it has an average particle diameter of 2 to 60 m.
According to the present invention, a purified polyether having an extremely low content of an alkali metal can be obtained effectively.</abstract><oa>free_for_read</oa></addata></record> |
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| title | Process for purification of crude polyether and adsorbent |
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