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    • 2. 发明授权
    • Multilayer polymer structure
    • 多层聚合物结构
    • US07960014B2
    • 2011-06-14
    • US11720128
    • 2005-11-23
    • Corinne BushelmanJames K. DotyJean De CanniereJohan Billiet
    • Corinne BushelmanJames K. DotyJean De CanniereJohan Billiet
    • B29C47/06B32B7/02B32B27/08B32B27/30B32B27/34
    • B32B27/08B32B27/30B32B27/304B32B27/322B32B27/34Y10T428/24942Y10T428/3154Y10T428/31725
    • Multilayer Polymer Structure Multilayer structure comprising at least one couple (L1-L2) of adjacent layers (L1) and (L2), wherein layer (L1) comprises at least one polymer composition (C1) comprising a grafted fluoropolymer material (M1) consisting of N1 grafted fluoropolymer(s) (P1), said polymer(s) (P1) obtained by a process comprising grafting onto an ungrafted fluoropolymer (U1) at least one grafting agent (G1) chosen from ethylenically unsaturated carboxy acids, their esters, their anhydrides and their salts, layer (L2) comprises at least one polymer composition (C2) comprising at least one impact modifier (I2) and a semi-crystalline aromatic polyamide material (M2) consisting of N2 semi-crystalline aromatic polyamide polymer(s) (P2), and the average melting temperature (Tav,1) of material (M1) differs by at most 45° C. from the average melting temperature (Tav,2) of material (M2), Nj being the number of polymer(s) (Pj) of material (Mj), Nj>1, Tav,j being equal to formula (T) wi,j being the weight amount of the ith polymer (Pj) of material (Mj), Ti,j being the melting temperature of the ith polymer (Pj) of material (Mj), Wj being the total weight amount of material (Mj), for j=1 and for j=2. Process for manufacturing the above multilayer structure, which comprises co-extruding polymer compositions (C1) and (C2), so as to obtain couple (L1-L2) of adjacent layers (T1) and (T2). Shaped article comprising the above multilayer structure, and process for manufacturing it. ( ∑ i = 1 N j ⁢ w i , j ⁢ T i , j ) / W j ( 1 )
    • 多层聚合物结构包括相邻层(L1)和(L2)的至少一对(L1-L2)的多层结构,其中层(L1)包含至少一种包含接枝的含氟聚合物材料(M1)的聚合物组合物(C1) N1接枝的含氟聚合物(P1),所述聚合物(P1)通过包括接枝到未接枝的含氟聚合物(U1)上的方法获得,所述接枝的含氟聚合物至少一种选自烯属不饱和羧酸,它们的酯的接枝剂(G1),它们的酯, 酸酐及其盐,层(L2)包含至少一种包含至少一种抗冲改性剂(I2)的聚合物组合物(C2)和由N 2半结晶芳族聚酰胺聚合物组成的半结晶芳族聚酰胺材料(M2) (P2),材料(M1)的平均熔融温度(Tav,1)与材料(M2)的平均熔融温度(Tav,2)相差至多45℃,Nj为聚合物的数量( s)(Pj),Nj> 1,Tav,j等于公式(T)wi ,j是材料(Mj)的第i个聚合物(Pj)的重量,Ti,j是材料(Mj)的第i个聚合物(Pj)的熔融温度,Wj是材料的总重量(Mj) ,对于j = 1和j = 2。 制造上述多层结构的方法,其包括共挤出聚合物组合物(C1)和(C2),以获得相邻层(L1)和(L2)的耦合(L1-L2)。 包括上述多层结构的成型制品及其制造方法。 (Σi = 1 N j w i,j T i,j)/ W j(1)