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    • 22. 发明申请
    • Novel method for producing water-soluble comb-shaped copolymers
    • US20100048839A1
    • 2010-02-25
    • US11921000
    • 2006-05-18
    • Olivier BraunPaul MalloJean-Louis ViovyJérémie Weber
    • Olivier BraunPaul MalloJean-Louis ViovyJérémie Weber
    • C08F2/00
    • G01N27/44747C08F267/10C08F290/046C08F220/56
    • The invention relates to a method for producing a comb-shaped copolymer whose skeleton is of an acrylamide, acrylic acid, acryloyl aminoethanol or dimethyl acrylamide type and on which poly(N-alkyl acrylamide) or poly(N,N-5 dialkyl acrylamide lateral segments are grafted. Said method is characterised in that it consists (a) in producing a telomer poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) of formula (I) H2N—R1—Z—{CH2—C(R2)[C(=O)N(R3)(R4)]-}n—H (I) 10 by reacting in water a compound of formula (II) CH2=C(R2)—C(=O)—N(R3)(R4) (II) with a chain limiting compound of formula (III) Z—R1—NH2; (b) in isolating the telomer of formula (I) obtained at a stage (a); (c) in reacting in water the telomer of formula (I) obtained at stage (b) with an acid chloride of formula (IV) CH2=C(R5)—C(=O)—C, at a molar ratio (IV)/(III) equal to or less than 10 and equal to or greater than 1 in such a way that a macro monomer of formula (V) 20 CH2=C(R5)—C(=O)NH—R1—Z—{CH2—C(R2)[C(=O)N(R3)(R4)]-}n—H (V) is obtained; (d) in isolating the macro monomer of formula (V) obtained at stage (c); (e) in copolymerising in water the macro monomer of formula (V) isolated at stage (d) with a monomer selected from acrylamide, acrylic acid, acryloyl-aminoethanol or dimethyl-acrylamide and, if necessary, (f) in purifying the thus obtained copolymer.Method for producing a comb-shaped copolymer whose skeleton is of an acrylamide, acrylic acid, acryloyl aminoethanol or dimethyl acrylamide type and on which poly(N-alkyl acrylamide) or poly(N,N-5 dialkyl acrylamide lateral segments are grafted, includes (a) producing a telomer poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) of formula (I) H2N—R1—Z—{CH2—C(R2) [C(=O)N(R3)(R4)]-}n—H (I) 10 by reacting in water a compound of formula (II) CH2=C(R2)—C(=O)—N(R3)(R4) (II) with a chain limiting compound of formula (III) Z—R1—NH2; (b) isolating the telomer of formula (I) obtained at a stage (a); (c) reacting in water the telomer of formula (I) obtained at stage (b) with an acid chloride of formula (IV) CH2=C(R5)—C(=O)—C1 at a molar ratio (IV)/(III) equal to or less than 10 and equal to or greater than 1 so that a macro monomer of formula (V) 20 CH2=C(R5)—C(=O) NH—R1—Z—{CH2—C(R2) [C(=O)N(R3) (R4)]-}n—H (V) is obtained; (d) isolating the macro monomer of formula (V) obtained at stage (c); (e) copolymerizing in water the macro monomer of formula (V) isolated at stage (d) with a monomer selected from acrylamide, acrylic acid, acryloyl-aminoethanol or dimethyl-acrylamide and, if necessary, (f) purifying the thus obtained copolymer.
    • 24. 发明授权
    • Heat-sensitive medium for separating species in a separating channel and use thereof
    • 用于在分离通道中分离物质的热敏介质及其用途
    • US06830670B1
    • 2004-12-14
    • US09869382
    • 2001-10-01
    • Jean-Louis ViovyDominique HourdetJan Sudor
    • Jean-Louis ViovyDominique HourdetJan Sudor
    • G01N27447
    • G01N27/44747
    • A medium comprises an electrolyte wherein is dissolved at least an assembly of block copolymers characterized in that the block copolymers: are present in the electrolyte at a concentration level to provide the medium with the property of reversibly passing from a state of viscosity V1, obtained at a temperature T1, to a viscosity state V2 greater by at least 100% than V1, obtained at a temperature T2, and comprise in their structure at least: two non-contiguous polymeric segments having in the electrolyte a lower critical solubility temperature (LCST) and having an average number of atoms along their skeleton more than 50; and a polymeric segment soluble in the electrolyte at temperatures T1 and T2. The invention also concerns the use of the medium for separating analytes.
    • 介质包括电解质,其中至少溶解了嵌段共聚物的组合物,其特征在于所述嵌段共聚物以浓度水平存在于所述电解质中,以提供介质具有从粘度V1的状态可逆地通过的性质 温度T1,在温度T2下达到比V1大至少100%的粘度状态V2,并且在其结构中包括至少两个在电解液中具有较低临界溶解度温度(LCST)的非连续聚合物链段, 并且沿其骨架的平均原子数大于50; 和在温度T1和T2下可溶于电解质的聚合物链段。 本发明还涉及介质用于分离分析物的用途。
    • 27. 发明申请
    • ENCAPSULATION MICROFLUIDIC DEVICE
    • 封装微流体装置
    • US20110285042A1
    • 2011-11-24
    • US13120310
    • 2008-09-22
    • Jean-Louis ViovyMax Chabert
    • Jean-Louis ViovyMax Chabert
    • B01J13/02
    • B01J13/04
    • A method for encapsulating or sorting colloidal objects, comprising the step of flowing said objects in a first flow stream partly or fully surrounded by at least one second flow stream in a channel comprising a narrow strait, wherein along an elongated part of the path of said first flow stream either (a) the bidimensional size of said first flow stream is smaller than the largest bidimensional size of at least some of said objects, either (b) the smallest unidimensional size of said first flow stream is smaller than the largest unidimensional size of at least some of said objects, either (c) said first flow stream is splitting, in the absence of said objects, into droplets with a volume smaller than the volume of at least some of said objects, or (d) said first flow stream would have in the absence of said particles, a shape that cannot entirely encompass some of said objects.
    • 一种用于封装或分选胶体物体的方法,包括以下步骤:在包含狭窄的海峡的通道中部分地或完全被至少一个第二流动流包围的第一流动流中流动所述物体,其中沿着所述 (a)所述第一流动流的二维尺寸小于至少一些所述物体的最大二维尺寸,(b)所述第一流动流的最小一维尺寸小于最大一维尺寸 (c)所述第一流动流在没有所述物体的情况下分裂成体积小于至少一些所述物体的体积的液滴,或(d)所述第一流动 在没有所述颗粒的情况下,流将具有不能完全包含所述物体的一部分的形状。