Organic silicon modified alkynol defoaming agent and preparation method thereof
The preparation method comprises the following steps: putting hydrogen-containing silicone oil and alkynol into a reaction kettle, heating to 75-85 DEG C for the first time, vacuumizing under the negative pressure of less than or equal to-0.09 MPa for 25-35 minutes, and stopping vacuumizing; adding...
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| creator | WANG KUIJIANG MA JIAQUAN YANG LEI ZHA WANGMIN LI HUAJIE XIE QINGYU |
| description | The preparation method comprises the following steps: putting hydrogen-containing silicone oil and alkynol into a reaction kettle, heating to 75-85 DEG C for the first time, vacuumizing under the negative pressure of less than or equal to-0.09 MPa for 25-35 minutes, and stopping vacuumizing; adding nitrogen, adding a catalyst, heating to 100-125 DEG C for the second time, keeping the temperature for 2-5 hours, and cooling to obtain an organic silicon modified alkynol defoaming agent intermediate; mixing the organic silicon modified alkynol defoaming agent intermediate, a solvent and an emulsifier, heating and uniformly stirring to obtain the organic silicon modified alkynol defoaming agent. The carbon chain number of alkynol is 6-12, and the hydroxyl number is 4, 6 or 8. According to the invention, a micromolecular alkynol chain segment and a macromolecular organosilicon chain segment are combined through hydrosilylation, and the respective advantages of micromolecular alkynol and hydrogen-containing silicone |
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The carbon chain number of alkynol is 6-12, and the hydroxyl number is 4, 6 or 8. According to the invention, a micromolecular alkynol chain segment and a macromolecular organosilicon chain segment are combined through hydrosilylation, and the respective advantages of micromolecular alkynol and hydrogen-containing silicone</description><language>chi ; eng</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2023</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=20230623&DB=EPODOC&CC=CN&NR=116271999A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230623&DB=EPODOC&CC=CN&NR=116271999A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG KUIJIANG</creatorcontrib><creatorcontrib>MA JIAQUAN</creatorcontrib><creatorcontrib>YANG LEI</creatorcontrib><creatorcontrib>ZHA WANGMIN</creatorcontrib><creatorcontrib>LI HUAJIE</creatorcontrib><creatorcontrib>XIE QINGYU</creatorcontrib><title>Organic silicon modified alkynol defoaming agent and preparation method thereof</title><description>The preparation method comprises the following steps: putting hydrogen-containing silicone oil and alkynol into a reaction kettle, heating to 75-85 DEG C for the first time, vacuumizing under the negative pressure of less than or equal to-0.09 MPa for 25-35 minutes, and stopping vacuumizing; adding nitrogen, adding a catalyst, heating to 100-125 DEG C for the second time, keeping the temperature for 2-5 hours, and cooling to obtain an organic silicon modified alkynol defoaming agent intermediate; mixing the organic silicon modified alkynol defoaming agent intermediate, a solvent and an emulsifier, heating and uniformly stirring to obtain the organic silicon modified alkynol defoaming agent. The carbon chain number of alkynol is 6-12, and the hydroxyl number is 4, 6 or 8. 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The carbon chain number of alkynol is 6-12, and the hydroxyl number is 4, 6 or 8. According to the invention, a micromolecular alkynol chain segment and a macromolecular organosilicon chain segment are combined through hydrosilylation, and the respective advantages of micromolecular alkynol and hydrogen-containing silicone</abstract><oa>free_for_read</oa></addata></record> |
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| title | Organic silicon modified alkynol defoaming agent and preparation method thereof |
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