申请人:JAPAN SYNTHETIC RUBBER CO., LTD.
公开号:EP0290131A2
公开(公告)日:1988-11-09
An acrylic rubber obtainable by copolymerizing a monomer mixture of:
(A) 70 to 99.99% by weight of at least one compound selected from the group consisting of alkyl acrylates and alkoxyalkyl acrylates,
(B) 0.01 to 10% by weight of at least one compound represented by the general formula:
wherein R' is a hydrogen atom or a methyl group; X is a hydrogen atom, -COOR6 (R6 is an alkyl group having 1-10 carbon atoms or an alkoxyalkyl group having 2-14 carbon atoms), or
R2, R3 and R4 are independently hydrogen atoms or groups having 1-10 carbon atoms whose carbon atom adjacent to C=C has no hydrogen; R5 is a group having 1-10 carbon atoms whose carbon atom adjacent to C = C has no hydrogen; Y is
or
and n is 1 or 0, and
(C) 0-20% by weight of at least one compound selected from the group consisting of other unsaturated compounds of the vinyl type, vinylidene type and vinylene type, in the presence of a radical polymerization initiator. Said acrylic rubber, when crosslinked with a crosslinking agent, gives a cured article having good heat resistance and a good compression set property and accordingly suitable for use as a hose or a sealing material.
一种丙烯酸橡胶,可通过共聚以下单体混合物获得:
(A) 至少一种选自丙烯酸烷基酯和丙烯酸烷氧基烷基酯组的化合物,其重量占 70%至 99.99%、
(B) 0.01%至 10%(按重量计)的至少一种由通式表示的化合物:
其中 R' 是氢原子或甲基;X 是氢原子、-COOR6(R6 是具有 1-10 个碳原子的烷基或具有 2-14 个碳原子的烷氧基烷基),或
R2、R3 和 R4 独立地是氢原子或具有 1-10 个碳原子且与 C=C 相邻的碳原子不含氢的基团;R5 是具有 1-10 个碳原子且与 C=C 相邻的碳原子不含氢的基团;Y 是
或
且 n 为 1 或 0,且
(C) 0-20% (按重量计)的至少一种选自乙烯基型、亚乙烯基型和亚乙烯基型其他不饱和 化合物的化合物,在有自由基聚合引发剂存在的情况下。所述丙烯酸橡胶与交联剂交联后,固化物具有良好的耐热性和良好的压缩永久变形性能,因此适合用作软管或密封材料。