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公开(公告)号：EP2490984A1
公开(公告)日：2012-08-29
申请号：EP09850507.6
申请日：2009-10-23
IPC分类号： C01B25/165 , C08K3/32
CPC分类号： C01B25/165 , C09K21/04
摘要： A process for stabilizing hypophosphite salt is provided, which comprises the following steps: a) washing the hypophosphite salt at least one time under a controlled pH value of 4-11, preferably 5-8, as the said hypophosphite salt in an aqueous solution and/or in a solid state; and b) drying the said hypophosphite salt under reduced pressure to remove the volatiles. The process can prevent or minimize the formation of a dangerous quantity of phosphine from hypophosphite salts, more particularly in the flame retardant of the application. The flame retardant polymer composition is also provided, which comprises a polymer and the hypophosphite salt stabilized by the above process.
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2.发明公开USE OF CALCIUM HYPOPHOSPHITE AS A FILLER TO INCREASE MECHANICAL PROPERTIES OF A POLYAMIDE COMPOSITION 审中-公开钙的次磷酸盐作为填料用于聚酰胺组合物的提高机械性能
公开(公告)号：EP2678384A1
公开(公告)日：2014-01-01
申请号：EP11859457.1
申请日：2011-02-24
IPC分类号： C08K3/32 , C01B25/165 , C08L77/00
CPC分类号： C08K3/32 , C01B25/165 , C01P2006/10 , C09C1/02 , C08L77/00 , C08L77/02 , C08L77/06
摘要： The present invention discloses the use of a heat stabilized calcium hypophosphite as a filler to increase the mechanical properties of a polyamide composition. Said composition may also comprise reinforcing and/or bulking filler and/or impact modifier agents. The invention permits to obtain polyamide composition providing very good mechanical performances with the use of a calcium hypophosphite having a low degree of phoshpine generation.
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3.发明公开
公开(公告)号：EP2678385A1
公开(公告)日：2014-01-01
申请号：EP12748890.6
申请日：2012-02-17
CPC分类号： C08K3/32 , C08K3/016 , C08K3/0058 , C08L63/00
摘要： A flame retardant polymer composition is described. The composition can include at least one polymer and a hypophosphite salt, wherein the hypophosphite salt is heat stabilized so that when it is heated for 3 hours at 298° C. under a flow of argon flushing at rate 58 mL/min, it generates less than 0.5 mL of phosphine per gram of hypophosphite salt. The polymer can be an epoxy resin, a phenolic resin, an acrylonitrile-butadiene-styrene resin, a styrene-acrylonitrile resin, a mixture of high impact polystyrene and polyphenylene oxides, a styrene-butadiene rubber, a polylactic acid or a polyvinyl chloride.
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4.发明公开
公开(公告)号：EP2678386A1
公开(公告)日：2014-01-01
申请号：EP12749308.8
申请日：2012-02-17
CPC分类号： C08K5/51 , C01B25/06 , C01B25/165 , C08K3/22 , C08K3/32 , C08K5/3492 , C08K5/49 , C08L77/00
摘要： A flame retardant polymer composition comprising at least one polymer and a hypophosphite salt is disclosed, wherein: - the hypophosphite salt is so heat stabilized that, when it is heated for 3 hours at 298℃ under a flow of argon flushing at rate 58 mL/min, it generates less than 0.5 mL of phosphine per gram of hypophosphite salt; and - the flame retardant polymer composition further comprises at least an additive improving the flame retardant properties of the composition.
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公开(公告)号：EP2475743A1
公开(公告)日：2012-07-18
申请号：EP09848603.8
申请日：2009-08-24
IPC分类号： C09K21/04 , C01B25/165 , C08K3/32
CPC分类号： C09K21/04 , C01B25/165 , C08K3/32
摘要： The current invention relates to a process for stabilizing a hypophosphite salt, comprising the step of heating the hypophosphite salt at a temperature of between 150 and 370° C. during a sufficient period of time to prevent the formation of a dangerous quantity of phosphine in their application as FR in polymers and a flame retardant polymer composition comprising a polymer and 0.1 to 30 weight percent based on the total weight of the composition of the hypophosphite salt thermally stabilized by the above process.
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