公开(公告)号：EP2097480B1

公开(公告)日：2010-08-11

申请号：EP07858734.2

申请日：2007-11-26

申请人： ARKEMA FRANCE

发明人： LE CROM, Christophe ,  LEIBLER, Ludwik

IPC分类号： C08L33/14

CPC分类号： G11B7/245 ,  B82Y20/00 ,  B82Y30/00

摘要： The invention relates to a core-shell-type multilayer particle comprising at least one layer B that comprises at least one photoactive monomer bearing a photoisomerizable chromophore and a rigid shell A. The photoactive monomer has the following formula (I): (I) in which: X denotes H or CH3-; G denotes =O-C(=O)-, -C(=O)-O-, a substituted or unsubstituted phenyl group, or else -NR-C(=O)-, NR being bonded to L and R being H or a C1-C10 alkyl group; L denotes a spacer group; CR denotes a photoisomerizable chromophore. It is possible to use the multilayer particle of the invention to achieve optical storage of 2D data.

公开(公告)号：EP1948441A1

公开(公告)日：2008-07-30

申请号：EP05822986.5

申请日：2005-11-25

申请人： Arkema France

发明人： GERARD, Pierre ,  GUERRET, Olivier ,  LE CROM, Christophe ,  DELPRAT, Patrick

IPC分类号： B32B27/30

CPC分类号： B32B27/08 ,  B32B27/30 ,  B32B27/302 ,  B32B27/304 ,  B32B27/308 ,  B32B2307/4026 ,  B32B2327/06 ,  B32B2333/12 ,  B32B2355/02

摘要： The invention relates to a method for protecting a plastic structure consisting in superimposing by coextrusion, hot compression and by multiple injections a PMMA-containing protective layer (I), possibly a pigmented layer (II) and an intermediate ductile layer (III) comprising a sequence copolymer of formula BAn consisting of a block polymer B comprising at least 60 % by weight of at least one type of (meth)acrylic monomer whose Tg is less than 5 °C, n blocks of polymer A which are bound to the polymer B block by covalent bonds, wherein n is an integer ranging from 1 to 10, and comprise at least 60 % by weight of at least one type of (meth)acrylic monomer whose Tg is greater than 0 °C, and a structured plastic layer (IV).

公开(公告)号：EP2097480A1

公开(公告)日：2009-09-09

申请号：EP07858734.2

申请日：2007-11-26

申请人： ARKEMA FRANCE

发明人： LE CROM, Christophe ,  LEIBLER, Ludwik

IPC分类号： C08L33/14

CPC分类号： G11B7/245 ,  B82Y20/00 ,  B82Y30/00

摘要： The invention relates to a core-shell-type multilayer particle comprising at least one layer B that comprises at least one photoactive monomer bearing a photoisomerizable chromophore and a rigid shell A. The photoactive monomer has the following formula (I): (I) in which: X denotes H or CH3-; G denotes =O-C(=O)-, -C(=O)-O-, a substituted or unsubstituted phenyl group, or else -NR-C(=O)-, NR being bonded to L and R being H or a C1-C10 alkyl group; L denotes a spacer group; CR denotes a photoisomerizable chromophore. It is possible to use the multilayer particle of the invention to achieve optical storage of 2D data.

公开(公告)号：EP2094751A1

公开(公告)日：2009-09-02

申请号：EP07866542.9

申请日：2007-11-26

申请人： ARKEMA FRANCE

发明人： LE CROM, Christophe ,  MEUNIER, Gilles ,  GLOTIN, Michel

IPC分类号： C08F293/00 ,  C08F297/02 ,  C08L53/00 ,  G11B7/245 ,  C08F290/00

CPC分类号： C08F293/005 ,  B82Y10/00 ,  C08L53/00 ,  G11B7/245 ,  G11B7/2467 ,  Y10T428/24 ,  C08L2666/02

摘要： The present invention relates to a block copolymer comprising: at least a bloc A having a Tg > -60 °C, preferably a Tg > 0 °C, and most preferably > 60 °C, and at least one block B comprising at least one photoactive monomer having a photoisomerable chromophore. The photoactive monomer having the formula (I), wherein X is H or CH3-; G is -O-C(=O)-, -C(=O)-O-, a phenyl group, substituted or un-substituted, or -NR-C(=O)-, NR being linked to L and R is H or a C1- C10 alkyl group; L is a spacer group; CR is a photoisomerable chromophore. The block copolymer provides a 3D optical memory. The invention also relates to this optical 3D memory.