ZUBEREITUNG ZUM WASSERABWEISENDMACHEN ANORGANISCHER BAUSTOFFE
A composition for making building materials water-repellent, before or after they are shaped, the composition containing organoalkoxysiloxanes of the formula in which R1 is an alkyl or aryl radical, R2 is an alkyl radical with 1 to 4 carbon atoms, a=0.8 to 1.5, and b is not greater than 2. The compo...
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| creator | FRITSCH,HERWIG SCHAMBERG,ECKEHARD,DR QUILITSCH,HERBERT KOERNER,GOETZ,DR |
| description | A composition for making building materials water-repellent, before or after they are shaped, the composition containing organoalkoxysiloxanes of the formula in which R1 is an alkyl or aryl radical, R2 is an alkyl radical with 1 to 4 carbon atoms, a=0.8 to 1.5, and b is not greater than 2. The composition contains (a) 1 to 20% by weight of a mixture of organoalkoxypolysiloxanes of the aforementioned formula, 25 to 75% weight of organoalkoxysiloxanes having a b-value of 0.1 to 0.5 (siloxanes A) and 75 to 25% by weight of the organopolysiloxanes having a b-value 0.8 to 2.0 (siloxanes B), and in which the sum of a and b is not greater than 3, (b) 80 to 90% by weight of a water immiscible solvent and, if necessary, (c) known condensation catalysts. The organoalkoxysiloxane mixture has a surprisingly increased stability on alkaline walling. At the same time, a high depth of penetration and good surface effectiveness are observed. |
| format | Patent |
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The composition contains (a) 1 to 20% by weight of a mixture of organoalkoxypolysiloxanes of the aforementioned formula, 25 to 75% weight of organoalkoxysiloxanes having a b-value of 0.1 to 0.5 (siloxanes A) and 75 to 25% by weight of the organopolysiloxanes having a b-value 0.8 to 2.0 (siloxanes B), and in which the sum of a and b is not greater than 3, (b) 80 to 90% by weight of a water immiscible solvent and, if necessary, (c) known condensation catalysts. The organoalkoxysiloxane mixture has a surprisingly increased stability on alkaline walling. At the same time, a high depth of penetration and good surface effectiveness are observed.</description><language>ger</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; LIME, MAGNESIA ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; REFRACTORIES ; SLAG ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TREATMENT OF NATURAL STONE</subject><creationdate>1984</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=19841011&DB=EPODOC&CC=DE&NR=3312911A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19841011&DB=EPODOC&CC=DE&NR=3312911A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FRITSCH,HERWIG</creatorcontrib><creatorcontrib>SCHAMBERG,ECKEHARD,DR</creatorcontrib><creatorcontrib>QUILITSCH,HERBERT</creatorcontrib><creatorcontrib>KOERNER,GOETZ,DR</creatorcontrib><title>ZUBEREITUNG ZUM WASSERABWEISENDMACHEN ANORGANISCHER BAUSTOFFE</title><description>A composition for making building materials water-repellent, before or after they are shaped, the composition containing organoalkoxysiloxanes of the formula in which R1 is an alkyl or aryl radical, R2 is an alkyl radical with 1 to 4 carbon atoms, a=0.8 to 1.5, and b is not greater than 2. The composition contains (a) 1 to 20% by weight of a mixture of organoalkoxypolysiloxanes of the aforementioned formula, 25 to 75% weight of organoalkoxysiloxanes having a b-value of 0.1 to 0.5 (siloxanes A) and 75 to 25% by weight of the organopolysiloxanes having a b-value 0.8 to 2.0 (siloxanes B), and in which the sum of a and b is not greater than 3, (b) 80 to 90% by weight of a water immiscible solvent and, if necessary, (c) known condensation catalysts. The organoalkoxysiloxane mixture has a surprisingly increased stability on alkaline walling. 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The composition contains (a) 1 to 20% by weight of a mixture of organoalkoxypolysiloxanes of the aforementioned formula, 25 to 75% weight of organoalkoxysiloxanes having a b-value of 0.1 to 0.5 (siloxanes A) and 75 to 25% by weight of the organopolysiloxanes having a b-value 0.8 to 2.0 (siloxanes B), and in which the sum of a and b is not greater than 3, (b) 80 to 90% by weight of a water immiscible solvent and, if necessary, (c) known condensation catalysts. The organoalkoxysiloxane mixture has a surprisingly increased stability on alkaline walling. At the same time, a high depth of penetration and good surface effectiveness are observed.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE |
| title | ZUBEREITUNG ZUM WASSERABWEISENDMACHEN ANORGANISCHER BAUSTOFFE |
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