Acrylic rubber, acrylic rubber composition and cured rubber article
thereof
    2.
    发明授权
    Acrylic rubber, acrylic rubber composition and cured rubber article thereof 失效
    丙烯酸橡胶,丙烯酸橡胶组合物及其固化橡胶制品

    公开(公告)号:US4912186A

    公开(公告)日:1990-03-27

    申请号:US236218

    申请日:1988-08-25

    IPC分类号: C08F220/12 C08F220/28

    CPC分类号: C08F220/12 C08F220/28

    摘要: 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: ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group; X is a hydrogen atom, --COOR.sup.6 (R.sup.6 is an alkyl group having 1-10 carbon atoms or an alkoxyalkyl group having 2-14 carbon atoms), or ##STR2## R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen atoms or groups having 1-10 carbon atoms whose carbon atom adjacent to C.dbd.C has no hydrogen; R.sup.5 is a group having 1-10 carbon atoms whose carbon atom adjacent to C.dbd.C has no hydrogen; Y is ##STR3## or --O--; 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.

    Hydrogenated copolymer rubber, rubber composition comprising said rubber
and rubber product obtained from the rubber
    3.
    发明授权
    Hydrogenated copolymer rubber, rubber composition comprising said rubber and rubber product obtained from the rubber 失效
    加氢共聚物橡胶,橡胶组合物,包括从橡胶中获得的橡胶和橡胶产品

    公开(公告)号:US5093426A

    公开(公告)日:1992-03-03

    申请号:US424085

    申请日:1989-10-19

    IPC分类号: C08C19/02 C08F8/04

    CPC分类号: C08C19/02 C08F8/04

    摘要: A hydrogenated copolymer rubber which is a hydrogenation product of a random copolymer rubber consisting of:(A) 30-70 mole % of a unit derived from at least one monomer selected from the group consisting of alkyl acrylates and alkoxy-substituted alkyl acrylates,(B) 20-70 mole % of a unit derived from at least one conjugated diene, and(C) 0-10 mole % of a unit derived from at least one other ethylenically unsaturated compound copolymerizable with the components (A) and (B) [(A)+(B)+(C)=100 mole %] wherein at least 90% of the double bonds of the conjugated diene unit is hydrogenated; a crosslinkable rubber composition comprising said hydrogenated copolymer rubber and a crosslinking agent; and a thermoplastic polymer comprising said hydrogenated copolymer rubber and a thermoplastic resin. These rubbers and compositions are superior in low-temperature resistance, heat resistance, ozone resistance, mechanical strengths, compression set, impact resilience and oil resistance.

    摘要翻译: 一种氢化共聚物橡胶,其是由以下组成的无规共聚物橡胶的氢化产物:(A)30-70摩尔%的源自至少一种选自丙烯酸烷基酯和烷氧基取代的丙烯酸烷基酯的单体的单元, B)20-70摩尔%的衍生自至少一种共轭二烯的单元,和(C)0-10摩尔%衍生自可与组分(A)和(B)共聚的至少一种其它烯属不饱和化合物的单元, [(A)+(B)+(C)= 100摩尔%]其中至少90%的共轭二烯单元的双键被氢化; 包含所述氢化共聚物橡胶和交联剂的可交联橡胶组合物; 和包含所述氢化共聚物橡胶和热塑性树脂的热塑性聚合物。 这些橡胶和组合物的耐低温性,耐热性,耐臭氧性,机械强度,压缩永久变形,抗冲击性和耐油性都优异。

    Refrigerant evaporator
    4.
    发明授权
    Refrigerant evaporator 失效
    制冷剂蒸发器

    公开(公告)号:US4821531A

    公开(公告)日:1989-04-18

    申请号:US130542

    申请日:1987-12-09

    摘要: A structural arrangement for an evaporator producing a uniform temperature gradient across its width. The structure is arranged so as to even out the flow of refrigerant within the evaporator. A first tank portion has a inlet and a second tank portion has a outlet. One end of each of plural tubes are connected thereto. A plurality of tubes allow refrigerant to flow from the first tank portion to the second. The tubes are arranged so as to provide equal flow distances for refrigerant across the evaporator, taking into account the directions of flow in the first and second tank portions. In a second embodiment, the inlet port and the outlet port are disposed at the first tank portion and the second tank portion respectively in such a manner that directions of the refrigerant flow within the first tank portion and the second tank portion are opposite to each other. In a third embodiment, one end of a first tube of the plurality is connected to the first tank portion closer to one end of the first tank portion, than where one end of a second tube is connected to the second tank portion closer to the other end of the second tank portion than the other end of the second tube. The inlet port is disposed close to one end of the first tank portion and the outlet port is disposed close to one end of the second tank portion.

    摘要翻译: 用于蒸发器的结构布置,其横跨其宽度产生均匀的温度梯度。 该结构被布置成使蒸发器内的制冷剂的流动均匀。 第一罐部分具有入口,第二罐部分具有出口。 多个管中的每一个的一端连接到其上。 多个管允许制冷剂从第一罐部分流到第二罐部分。 这些管被布置成为考虑到第一和第二罐部分中的流动方向而为跨越蒸发器的制冷剂提供相等的流动距离。 在第二实施例中,入口和出口分别设置在第一罐部分和第二罐部分处,使得第一罐部分和第二罐部分内的制冷剂流动方向彼此相反 。 在第三实施例中,多个第一管的一端连接到靠近第一罐部分的一端的第一罐部分,其中第二管的一端连接到更靠近另一个的第二罐部分 第二罐部分的端部比第二管的另一端。 入口端口靠近第一罐部分的一端设置,并且出口靠近第二罐部分的一端设置。