DEFOAMING AGENT, BUILDING MATERIAL BOARD AND ITS PRODUCTION
PROBLEM TO BE SOLVED: To obtain a polyether defoaming agent having an excellent defoaming effect even when a small amt. of the agent is used by adding ethylene oxide to a higher alcohol, further adding an alkylene oxide other than ethylene oxide and imparting a specified clouding point thereto. SOLU...
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| creator | IKEHARA TOYOJI UEHARA SHINICHI GOTO YOSHIKAZU |
| description | PROBLEM TO BE SOLVED: To obtain a polyether defoaming agent having an excellent defoaming effect even when a small amt. of the agent is used by adding ethylene oxide to a higher alcohol, further adding an alkylene oxide other than ethylene oxide and imparting a specified clouding point thereto. SOLUTION: An alcohol and an alkali metallic hydroxide as a catalyst are charged into an agitation type autoclave, melted by heating and dehydrated under reduced pressure. Ethylene oxide is charged and brought into addition reaction under elevated temp. and pressure. Propylene oxide and/or butylene oxide is then charged and brought into addition reaction under elevated temp. and pressure. The catalyst is removed from the reaction product and a compd. of the formula [where R is an 8-28C alkyl or alkenyl; A is a 3-4C alkylene; (m) is 3-10; (n) is 5-40; and 8 |
| format | Patent |
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SOLUTION: An alcohol and an alkali metallic hydroxide as a catalyst are charged into an agitation type autoclave, melted by heating and dehydrated under reduced pressure. Ethylene oxide is charged and brought into addition reaction under elevated temp. and pressure. Propylene oxide and/or butylene oxide is then charged and brought into addition reaction under elevated temp. and pressure. The catalyst is removed from the reaction product and a compd. of the formula [where R is an 8-28C alkyl or alkenyl; A is a 3-4C alkylene; (m) is 3-10; (n) is 5-40; and 8<=m+n<=50] having 25-95 deg.C clouding point measured by the butyl diglycol method is obtd. This compd. is used as an essential component to obtain the objective defoaming agent. In a process for making a building material board, 25-500 ppm of the defoaming agent based on the solid content is used. Productivity is increased and the quality of the product can be enhanced.</description><edition>6</edition><language>eng</language><subject>ARTIFICIAL STONE ; BUILDING ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS ; FIXED CONSTRUCTIONS ; LIME, MAGNESIA ; METALLURGY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; REFRACTORIES ; SEPARATION ; SLAG ; TRANSPORTING ; TREATMENT OF NATURAL STONE</subject><creationdate>1999</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=19990727&DB=EPODOC&CC=JP&NR=H11199291A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990727&DB=EPODOC&CC=JP&NR=H11199291A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IKEHARA TOYOJI</creatorcontrib><creatorcontrib>UEHARA SHINICHI</creatorcontrib><creatorcontrib>GOTO YOSHIKAZU</creatorcontrib><title>DEFOAMING AGENT, BUILDING MATERIAL BOARD AND ITS PRODUCTION</title><description>PROBLEM TO BE SOLVED: To obtain a polyether defoaming agent having an excellent defoaming effect even when a small amt. of the agent is used by adding ethylene oxide to a higher alcohol, further adding an alkylene oxide other than ethylene oxide and imparting a specified clouding point thereto. SOLUTION: An alcohol and an alkali metallic hydroxide as a catalyst are charged into an agitation type autoclave, melted by heating and dehydrated under reduced pressure. Ethylene oxide is charged and brought into addition reaction under elevated temp. and pressure. Propylene oxide and/or butylene oxide is then charged and brought into addition reaction under elevated temp. and pressure. The catalyst is removed from the reaction product and a compd. of the formula [where R is an 8-28C alkyl or alkenyl; A is a 3-4C alkylene; (m) is 3-10; (n) is 5-40; and 8<=m+n<=50] having 25-95 deg.C clouding point measured by the butyl diglycol method is obtd. This compd. is used as an essential component to obtain the objective defoaming agent. In a process for making a building material board, 25-500 ppm of the defoaming agent based on the solid content is used. 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SOLUTION: An alcohol and an alkali metallic hydroxide as a catalyst are charged into an agitation type autoclave, melted by heating and dehydrated under reduced pressure. Ethylene oxide is charged and brought into addition reaction under elevated temp. and pressure. Propylene oxide and/or butylene oxide is then charged and brought into addition reaction under elevated temp. and pressure. The catalyst is removed from the reaction product and a compd. of the formula [where R is an 8-28C alkyl or alkenyl; A is a 3-4C alkylene; (m) is 3-10; (n) is 5-40; and 8<=m+n<=50] having 25-95 deg.C clouding point measured by the butyl diglycol method is obtd. This compd. is used as an essential component to obtain the objective defoaming agent. In a process for making a building material board, 25-500 ppm of the defoaming agent based on the solid content is used. Productivity is increased and the quality of the product can be enhanced.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE BUILDING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS FIXED CONSTRUCTIONS LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG TRANSPORTING TREATMENT OF NATURAL STONE |
| title | DEFOAMING AGENT, BUILDING MATERIAL BOARD AND ITS PRODUCTION |
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