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公开(公告)号：EP1042391A1
公开(公告)日：2000-10-11
申请号：EP98963390.4
申请日：1998-12-08
IPC分类号： C08J3/12 , C09J133/06 , B01D1/16
CPC分类号： C08L25/06 , C08L33/06 , C08L2205/02 , C08L2666/04
摘要： A redispersible polymer powder has very polyvalent uses, for example in hydraulic setting systems, but also as binder for the most different applications, and can be produced by spray drying aqueous dispersions. The sprayable aqueous dispersions are prepared by mixing an aqueous polymer dispersion 1 (containing polymer I) with an aqueous polymer dispersion 2 (containing polymer II). The diameter of the particles of polymer I is 5 to 150 times, preferably 15 to 50 times larger than the diameter of the particles of polymer II. Polymer I is a film-forming polymer at room temperature while polymer II has a higher glass transition temperature than polymer I, is water-insoluble and therefore is undissolved in the aqueous dispersion to be sprayed. These polymer powders are characterised by a distinctly improved block strength and very good storage stability.
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公开(公告)号：EP0968245B1
公开(公告)日：2002-02-27
申请号：EP98919067.3
申请日：1998-03-10
IPC分类号： C08J3/12
CPC分类号： C08J3/122 , C08J2333/04
摘要： The invention relates to an easily dispersable powder based on polyacrylates which are particularly useful in mortar mixtures, providing said mixtures with good flowability or thixotropic properties with quick hardening. According to the invention, styrene-containing polyacrylates having a monomer content of 0.5 to 4.0 wt. %, said monomers containing amino groups or carboxylic acid, are atomized with auxiliary spraying agent mixtures consisting of 0.5 to 20 wt. % disodium or tetrasodium or potassium salt from an addition product made of N-alkyl-sulfosuccinamates with maleic acid and/or 1 to 20 wt. % desugared sodium lignosulfanate.
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公开(公告)号：EP1042391B1
公开(公告)日：2001-11-07
申请号：EP98963390.4
申请日：1998-12-08
IPC分类号： C08J3/12 , C09J133/06 , B01D1/16
CPC分类号： C08L25/06 , C08L33/06 , C08L2205/02 , C08L2666/04
摘要： A redispersible polymer powder has very polyvalent uses, for example in hydraulic setting systems, but also as binder for the most different applications, and can be produced by spray drying aqueous dispersions. The sprayable aqueous dispersions are prepared by mixing an aqueous polymer dispersion 1 (containing polymer I) with an aqueous polymer dispersion 2 (containing polymer II). The diameter of the particles of polymer I is 5 to 150 times, preferably 15 to 50 times larger than the diameter of the particles of polymer II. Polymer I is a film-forming polymer at room temperature while polymer II has a higher glass transition temperature than polymer I, is water-insoluble and therefore is undissolved in the aqueous dispersion to be sprayed. These polymer powders are characterised by a distinctly improved block strength and very good storage stability.
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公开(公告)号：EP0968245A1
公开(公告)日：2000-01-05
申请号：EP98919067.3
申请日：1998-03-10
IPC分类号： C08J3/12
CPC分类号： C08J3/122 , C08J2333/04
摘要： The invention relates to an easily dispersable powder based on polyacrylates which are particularly useful in mortar mixtures, providing said mixtures with good flowability or thixotropic properties with quick hardening. According to the invention, styrene-containing polyacrylates having a monomer content of 0.5 to 4.0 wt. %, said monomers containing amino groups or carboxylic acid, are atomized with auxiliary spraying agent mixtures consisting of 0.5 to 20 wt. % disodium or tetrasodium or potassium salt from an addition product made of N-alkyl-sulfosuccinamates with maleic acid and/or 1 to 20 wt. % desugared sodium lignosulfanate.
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