POLYETHERS AND METHOD FOR PRODUCING THE SAME
In production of a polyether using a double metal cyanide complex catalyst, the molecular weight distribution of the polyether to be obtained can be made narrower. A process for producing a polyether having at least one hydroxy group by subjecting a cyclic monomer such as an alkylene oxide to ring-o...
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| creator | SUZUKI, CHITOSHI FURUMI, MASAHITO HORIE, AKIO SASAKI, TAKAYUKI ARAI, TAKEAKI TANAKA, HIDEAKI |
| description | In production of a polyether using a double metal cyanide complex catalyst, the molecular weight distribution of the polyether to be obtained can be made narrower. A process for producing a polyether having at least one hydroxy group by subjecting a cyclic monomer such as an alkylene oxide to ring-opening addition polymerization to an initiator having a hydroxy group in the presence of a double metal cyanide complex catalyst, comprising the following initial step and polymerization step:
initial step: a step of supplying the cyclic monomer in an amount of from 5 to 20 parts by mass per 100 parts by mass of the initiator to a reaction system containing the initiator and the double metal cyanide complex catalyst, to carry out reaction, wherein the temperature of the reaction system when supply of the cyclic monomer is started is from 120 to 165°C, and the maximum temperature of the reaction system after supply of the cyclic monomer is higher by from 15 to 50°C than the temperature when supply of the cyclic monomer is started; and
polymerization step: a step of supplying the cyclic monomer to the reaction system after the initial step to carry out ring-opening addition polymerization. |
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initial step: a step of supplying the cyclic monomer in an amount of from 5 to 20 parts by mass per 100 parts by mass of the initiator to a reaction system containing the initiator and the double metal cyanide complex catalyst, to carry out reaction, wherein the temperature of the reaction system when supply of the cyclic monomer is started is from 120 to 165°C, and the maximum temperature of the reaction system after supply of the cyclic monomer is higher by from 15 to 50°C than the temperature when supply of the cyclic monomer is started; and
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initial step: a step of supplying the cyclic monomer in an amount of from 5 to 20 parts by mass per 100 parts by mass of the initiator to a reaction system containing the initiator and the double metal cyanide complex catalyst, to carry out reaction, wherein the temperature of the reaction system when supply of the cyclic monomer is started is from 120 to 165°C, and the maximum temperature of the reaction system after supply of the cyclic monomer is higher by from 15 to 50°C than the temperature when supply of the cyclic monomer is started; and
polymerization step: a step of supplying the cyclic monomer to the reaction system after the initial step to carry out ring-opening addition polymerization.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAJ8PeJdA3xcA0KVnD0c1HwBbL9XRTc_IMUAoL8XUKdPf3cFYDSCsGOvq48DKxpiTnFqbxQmptBwc01xNlDN7UgPz61uCAxOTUvtSTeNcDIxNzQwtjC0dCYCCUAS4kkuQ</recordid><startdate>20120704</startdate><enddate>20120704</enddate><creator>SUZUKI, CHITOSHI</creator><creator>FURUMI, MASAHITO</creator><creator>HORIE, AKIO</creator><creator>SASAKI, TAKAYUKI</creator><creator>ARAI, TAKEAKI</creator><creator>TANAKA, HIDEAKI</creator><scope>EVB</scope></search><sort><creationdate>20120704</creationdate><title>POLYETHERS AND METHOD FOR PRODUCING THE SAME</title><author>SUZUKI, CHITOSHI ; FURUMI, MASAHITO ; HORIE, AKIO ; SASAKI, TAKAYUKI ; ARAI, TAKEAKI ; TANAKA, HIDEAKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2471838A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2012</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>SUZUKI, CHITOSHI</creatorcontrib><creatorcontrib>FURUMI, MASAHITO</creatorcontrib><creatorcontrib>HORIE, AKIO</creatorcontrib><creatorcontrib>SASAKI, TAKAYUKI</creatorcontrib><creatorcontrib>ARAI, TAKEAKI</creatorcontrib><creatorcontrib>TANAKA, HIDEAKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUZUKI, CHITOSHI</au><au>FURUMI, MASAHITO</au><au>HORIE, AKIO</au><au>SASAKI, TAKAYUKI</au><au>ARAI, TAKEAKI</au><au>TANAKA, HIDEAKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POLYETHERS AND METHOD FOR PRODUCING THE SAME</title><date>2012-07-04</date><risdate>2012</risdate><abstract>In production of a polyether using a double metal cyanide complex catalyst, the molecular weight distribution of the polyether to be obtained can be made narrower. A process for producing a polyether having at least one hydroxy group by subjecting a cyclic monomer such as an alkylene oxide to ring-opening addition polymerization to an initiator having a hydroxy group in the presence of a double metal cyanide complex catalyst, comprising the following initial step and polymerization step:
initial step: a step of supplying the cyclic monomer in an amount of from 5 to 20 parts by mass per 100 parts by mass of the initiator to a reaction system containing the initiator and the double metal cyanide complex catalyst, to carry out reaction, wherein the temperature of the reaction system when supply of the cyclic monomer is started is from 120 to 165°C, and the maximum temperature of the reaction system after supply of the cyclic monomer is higher by from 15 to 50°C than the temperature when supply of the cyclic monomer is started; and
polymerization step: a step of supplying the cyclic monomer to the reaction system after the initial step to carry out ring-opening addition polymerization.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | POLYETHERS AND METHOD FOR PRODUCING THE SAME |
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