Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Defoaming compositions
A defoaming composition comprising an organic acid ester of an ethylene oxide, propylene oxide block copolymer and an organic acid ester of polypropylene oxide polymer of the following formula. Where R is linear, branched, saturated or unsaturated alkyl or alkyl carboxylate group of between 3 and 40 carbon atoms and n is from 16 to 68. The copolymer may be of the following fomrula where R is linear, branched, saturated or unsaturated alkyl or alkyl carboxylate group of between 3 and 40 carbon atoms, a is 2 to 8 and b 16 to 68. The composition may comprise a diluent which may be organic and/or may contain a hydrophobic solid. Also included are; A method for reducing air entrainment in cement compositions by adding the defoaming compositions. A cement composition comprising the defoaming composition, a hydraulic cement and water and a method of cementing subterranean formations using said cement composition.
Defoaming compositions
A defoaming composition comprising an organic acid ester of an ethylene oxide, propylene oxide block copolymer and an organic acid ester of polypropylene oxide polymer of the following formula. Where R is linear, branched, saturated or unsaturated alkyl or alkyl carboxylate group of between 3 and 40 carbon atoms and n is from 16 to 68. The copolymer may be of the following fomrula where R is linear, branched, saturated or unsaturated alkyl or alkyl carboxylate group of between 3 and 40 carbon atoms, a is 2 to 8 and b 16 to 68. The composition may comprise a diluent which may be organic and/or may contain a hydrophobic solid. Also included are; A method for reducing air entrainment in cement compositions by adding the defoaming compositions. A cement composition comprising the defoaming composition, a hydraulic cement and water and a method of cementing subterranean formations using said cement composition.
Defoaming compositions
AMIR MAHMOUDKHANI (Autor:in) / BAVA LUCIANA (Autor:in) / ROBERT E WILSON (Autor:in)
31.01.2018
Patent
Elektronische Ressource
Englisch
IPC:
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
B01D
SEPARATION
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Trennen
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C04B
Kalk
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LIME
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C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR