Novel styrene copolymer
    2.
    发明授权
    Novel styrene copolymer 失效
    新型苯乙烯共聚物

    公开(公告)号:US4704438A

    公开(公告)日:1987-11-03

    申请号:US35022

    申请日:1987-04-06

    IPC分类号: C08F8/42 C08F212/12 C08F8/00

    CPC分类号: C08F8/42

    摘要: A novel styrene copolymer having a functional group, i.e. silyl group on the para-position of the aromatic ring, useful as a functional polymer, is provided. An effective process for the production thereof comprises contacting a random or block copolymer of p-methylstyrene and .alpha.-methylstyrene with an organolithium compound to lithiate partly the p-methyl group in the copolymer and then reacting the lithiated copolymer with a silicon compound represented by the general formula (R.sup.1)(R.sup.2)(R.sup.3)SiX wherein R.sup.1, R.sup.2 and R.sup.3 are, same or different, alkyl groups with 1 to 6 carbon atoms or alkenyl groups with 2 to 6 carbon atoms, at least one of R.sup.1, R.sup.2 and R.sup.3 being an alkenyl group, and X is a halogen atom.

    摘要翻译: 提供了一种具有官能团的新型苯乙烯共聚物,即芳族环对位上的甲硅烷基,可用作官能聚合物。 一种有效的制备方法包括使对甲基苯乙烯和α-甲基苯乙烯的无规或嵌段共聚物与有机锂化合物接触,使共聚物中的对甲基部分地锂化,然后使锂化共聚物与由 通式(R1)(R2)(R3)SiX其中R1,R2和R3相同或不同,具有1至6个碳原子的烷基或具有2至6个碳原子的链烯基,R1,R2和 R3是烯基,X是卤素原子。

    Process for producing a modified styrene polymer
    3.
    发明授权
    Process for producing a modified styrene polymer 失效
    制备改性苯乙烯聚合物的方法

    公开(公告)号:US4912170A

    公开(公告)日:1990-03-27

    申请号:US288981

    申请日:1988-12-22

    IPC分类号: C08F8/42 C08F8/00

    CPC分类号: C08F8/00

    摘要: This invention relates to a p-methyl styrene polymer represented by the following formula: ##STR1## Z denotes a group such as a functional group. Poly p-methylstyrene (PPMS) is lithiated by reaction with n-butyllithium. The lithiated PPMS is used to prepare polymers containing functional groups. As an example, a solution of PPMS (MW 260,000), 1.0 g in 20 ml of cyclohexane, was reacted with n-butyllithium, 8.5 mmol, and tetramethylethylenediamine, 8.7 mmol, for 20 hours to obtain a precipitate. The precipitate was dissolved in THF, and CO.sub.2 was blown into the solution. The solution was washed with an aqueous solution of HCl and dropped into methanol to obtain a solid polymer having carboxyl group functionality.

    摘要翻译: 本发明涉及由下式表示的对甲基苯乙烯聚合物:< IMAGE> Z表示官能团等基团。 聚对甲基苯乙烯(PPMS)通过与正丁基锂反应而锂化。 锂化PPMS用于制备含有官能团的聚合物。 作为一个例子,将PPMS(MW 260,000),1.0g在20ml环己烷中的溶液与正丁基锂8.5mmol和四甲基乙二胺8.7mmol反应20小时,得到沉淀。 将沉淀物溶解在THF中,并将CO 2吹入溶液中。 溶液用HCl水溶液洗涤,滴入甲醇中,得到具有羧基官能团的固体聚合物。

    Cooling structure for multi-cylinder piston-engine cylinder block
    6.
    发明授权
    Cooling structure for multi-cylinder piston-engine cylinder block 失效
    多缸活塞发动机气缸体的冷却结构

    公开(公告)号:US4665867A

    公开(公告)日:1987-05-19

    申请号:US709654

    申请日:1985-03-08

    摘要: A cooling structure for a multi-cylinder piston-engine cylinder block includes a side coolant gallery distributing coolant into a water jacket surrounding a group of cylinders arranged from upstream to downstream. The flow cross-section of the coolant gallery decreases toward its downstream end. The water jacket has a water jacket wall which constitutes part of the coolant gallery. The water jacket wall includes a group of coolant inlets, each of which directs coolant towards the upper part of each of the cylinders. At least one coolant inlet is offset from the center of the corresponding cylinder toward a clearance between adjoining cylinders. This cooling structure can cool all of the cylinders uniformly and the entire surface of each cylinder evenly.

    摘要翻译: 用于多缸活塞 - 发动机气缸体的冷却结构包括侧冷却剂箱,其将冷却剂分配到围绕从上游到下游布置的一组气缸的水套中。 冷却剂流道的流动横截面朝向其下游端减小。 水套有一个水套壁,构成冷却液库的一部分。 水套壁包括一组冷却剂入口,每个冷却剂入口将冷却剂引导到每个气缸的上部。 至少一个冷却剂入口从相应气缸的中心偏移到相邻气缸之间的间隙。 这种冷却结构可以均匀地冷却所有气缸,并且每个气缸的整个表面均匀。

    Foam slush molding apparatus
    9.
    发明授权
    Foam slush molding apparatus 失效
    泡沫搪塑成型机

    公开(公告)号:US4867660A

    公开(公告)日:1989-09-19

    申请号:US923641

    申请日:1986-10-27

    摘要: The foam slush molding apparatus of this invention comprises a mold and a hot air jacket, and an optional heat retaining hood. The hot air jacket and the optional heat retaining hood are provided along and a certain distance apart from the molding surface on which a resin is heated and fused. The molding surface and the jacket form a first hot air chamber for heating, and the jacket and the optional heat retaining hood form an optional second hot air chamber for heat retention. The apparatus permits uniform heating and foaming at an efficient molding cycle.

    摘要翻译: 本发明的泡沫搪塑成型装置包括模具和热气套,以及可选的保温罩。 热空气护套和可选的保温罩沿着树脂被加热和熔化的成型表面沿着一定距离设置。 模制表面和护套形成用于加热的第一热空气室,并且护套和可选的保温罩形成用于保温的任选的第二热空气室。 该设备允许在有效的模制循环下均匀加热和发泡。