公开(公告)号：EP1805250A1

公开(公告)日：2007-07-11

申请号：EP05803722.7

申请日：2005-10-07

申请人： Dow Global Technologies Inc.

发明人： BURGUN, Sandrine ,  SUBRAMONIAN, Suresh

IPC分类号： C08J9/00 ,  C08L23/12

CPC分类号： C08J9/14 ,  C08J9/0061 ,  C08J2201/03 ,  C08J2205/05 ,  C08J2323/12 ,  C08J2423/00 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L2203/14 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2666/02 ,  C08L2666/06

摘要： Foam a polymer blend of (a) a high melt strength polypropylene (HMS PP); (b) a linear or substantially linear polypropylene that has a melting point within ten degrees Celsius of (a), a melt flow rate that is significantly different than (a) and that is miscible with (a); and, optionally, (c) a polyethylene that is immiscible with (a) produces a polymeric foam having an average cell size of at least four millimeters and that has an inherent open-celled content of at least 40 percent. The HMS PP makes up 60 weight percent (wt%) or more and 90 wt% or less of the total combined weight of (a) and (b). Component (c) makes up 60 wt% or less of the total polymer blend weight.

公开(公告)号：EP1805250B1

公开(公告)日：2008-03-12

申请号：EP05803722.7

申请日：2005-10-07

申请人： Dow Global Technologies Inc.

发明人： BURGUN, Sandrine ,  SUBRAMONIAN, Suresh

IPC分类号： C08J9/00 ,  C08L23/12

CPC分类号： C08J9/14 ,  C08J9/0061 ,  C08J2201/03 ,  C08J2205/05 ,  C08J2323/12 ,  C08J2423/00 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L2203/14 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2666/02 ,  C08L2666/06

摘要： Foam a polymer blend of (a) a high melt strength polypropylene (HMS PP); (b) a linear or substantially linear polypropylene that has a melting point within ten degrees Celsius of (a), a melt flow rate that is significantly different than (a) and that is miscible with (a); and, optionally, (c) a polyethylene that is immiscible with (a) produces a polymeric foam having an average cell size of at least four millimeters and that has an inherent open-celled content of at least 40 percent. The HMS PP makes up 60 weight percent (wt%) or more and 90 wt% or less of the total combined weight of (a) and (b). Component (c) makes up 60 wt% or less of the total polymer blend weight.

公开(公告)号：EP1404747A1

公开(公告)日：2004-04-07

申请号：EP02746369.4

申请日：2002-05-09

申请人： DOW GLOBAL TECHNOLOGIES INC.

发明人： BURGUN, Sandrine ,  KAMMERER, Jonathan ,  PARK, Chung, P. ,  STOBBY, William, G. ,  SUBRAMONIAN, Suresh

IPC分类号： C08J9/00

CPC分类号： C08J9/0023 ,  C08J9/0019

摘要： A macrocellular foam is described having improved cell size and Fire-test-response Characteristics, among other features, which is obtained by selecting a particle size less than 1 micron for the flame retardant adjuvant. The inventors found that the amount of fire retardant adjuvant can be increased for a given foam cell size or the foam cell size can be increased for a given amount of fire retardant adjuvant, allowing the production of foams having exceptionally large, well-formed, cells that have excellent Fire-test-response Characteristics. The benefits are especially noteworthy in relation to thermoplastic foams and inorganic flame retardation adjuvants, due to the unexpected reduction in the nucleation effect of the adjuvant. The foams are useful for improving the acoustic performance of products that are required to meet certain Fire-test-response Characteristics. It may be used in automotive and other transportation devices, building and construction, household and garden appliances, power tool and appliance and electrical supply housing, connectors, and aircraft as acoustic systems for sound absorption and insulation.

公开(公告)号：EP1274779A2

公开(公告)日：2003-01-15

申请号：EP01909185.9

申请日：2001-02-13

申请人： DOW GLOBAL TECHNOLOGIES INC.

发明人： SUBRAMONIAN, Suresh ,  BURGUN, Sandrine ,  PARK, Chung, P.

IPC分类号： C08J9/00

CPC分类号： C08J9/0019 ,  C08J9/0061 ,  C08J2201/03 ,  C08J2323/02

摘要： A process for making a macrocellular acoustic foam is disclosed in which a foamable gel comprising a blowing agent and a polymeric resin composition is subjected to an extrusion process characterized by a die pressure greater than the prefoaming critical die pressure but less than or equal to four times that of said prefoaming critical die pressure and macrocellular foams are disclosed obtainable by that process which are made of: A) one ore more homopolymers of ethylene, one ore more C3-C20 α-olefin polymers, or a combination thereof; B) one or more halogenated flame retardants; C) optionally, one or more polymers other than that of Component A; and D) optionally, one or more flame retardant synergists.