Positive photoresist layer and a method for using the same
    62.
    发明授权
    Positive photoresist layer and a method for using the same 有权
    正性光致抗蚀剂层及其使用方法

    公开(公告)号:US06338930B1

    公开(公告)日:2002-01-15

    申请号:US09654927

    申请日:2000-09-05

    CPC classification number: G03F7/0048 G03F7/0226 G03F7/162

    Abstract: A method for preparing a positive photoresist layer is provided. In this method, a photoresist composition is drop-wise applied on an insulator layer or a conductive metal layer formed on a substrate. The photoresist composition includes a polymer resin, a sensitizer for changing solubility of the photoresist layer when exposed and a solvent. The coated substrate is rotated at the speed of 1,250 to 1,350 rpm for 4.2 to 4.8 seconds. The coated substrate is then dried and the dried substrate is exposed to some form of radiation. Next, the exposed portion is removed by using an alkaline developing solution. The solvent preferably includes 3-methoxybutyl acetate and 4-butyrolactone, or includes 3-methoxybutyl acetate, 2-heptanone, and 4-butyrolactone.

    Abstract translation: 提供了制备正性光致抗蚀剂层的方法。 在该方法中,将光致抗蚀剂组合物逐滴施加在形成在基板上的绝缘体层或导电金属层上。 光致抗蚀剂组合物包括聚合物树脂,当曝光时改变光致抗蚀剂层的溶解度的敏化剂和溶剂。 涂布的基材以1,250至1350rpm的速度旋转4.2至4.8秒。 然后将涂覆的基材干燥并将干燥的基材暴露于某种形式的辐射。 接下来,通过使用碱性显影液去除曝光部分。 溶剂优选包括3-甲氧基丁酸乙酯和4-丁内酯,或包括3-甲氧基丁酸乙酯,2-庚酮和4-丁内酯。

    Lubricant containing oligomer with flexible and mesogenic segments
    63.
    发明授权
    Lubricant containing oligomer with flexible and mesogenic segments 失效
    含有柔性和介晶段的含有低聚物的润滑剂

    公开(公告)号:US5498358A

    公开(公告)日:1996-03-12

    申请号:US235779

    申请日:1994-04-29

    Abstract: A lubricant composition for an internal combustion engine contains a lubricant basestock and an effective amount for antiwear properties of an oligomer containing at least one mesogenic segment and at least one flexible segment. The oligomer can have a centrally disposed flexible segment, e.g., derived from a polyalkylene glycol such as polypropylene glycol, with mesogenic segments as end caps or it can contain alternating flexible and mesogenic segments, e.g., comprising a repeat unit comprising aromatic ester groups and at least one linear polyalkylene spacer. The oligomer preferably has a molecular weight of from about 1,000 to about 4,000 and is present at from about 0.1% to about 3%, by weight of the basestock.

    Abstract translation: 用于内燃机的润滑剂组合物含有润滑剂基础油和有效量的含有至少一个介晶段和至少一个柔性段的低聚物的抗磨性能。 低聚物可以具有中心设置的柔性链段,例如衍生自聚亚烷基二醇例如聚丙二醇,其具有中间链段作为端帽,或者其可以含有交替的柔性和中间链段,例如,包含包含芳族酯基的重复单元, 至少一个线性聚亚烷基间隔物。 低聚物优选具有约1,000至约4,000的分子量,并且以基料重量的约0.1%至约3%存在。

    Synthesis of block liquid crystal copolymer
    65.
    发明授权
    Synthesis of block liquid crystal copolymer 失效
    嵌段液晶共聚物的合成

    公开(公告)号:US5258486A

    公开(公告)日:1993-11-02

    申请号:US923691

    申请日:1992-07-31

    CPC classification number: C08G63/60

    Abstract: A single reactor process for formation of block copolymers comprising aromatic ester mesogenic units containing flexible alkane spacers and polyester flexible coil units in the main chain thereof which comprises reacting an .alpha.,.omega.-bis(hydroxybenzoyloxy) alkane monomer with an aromatic acid chloride in the presence of a functionalized flexible coil oligomer under temperature conditions in which an acid chloride-terminated bis(hydroxyalkyl terephthalate) oligomer was first formed at a first, lower temperature and the block copolymer was then formed at a second, higher temperature by reacting this oligomer with the functionalized flexible coil oligomer.

    Abstract translation: 用于形成嵌段共聚物的单反应器方法,其包含在其主链中含有柔性烷烃间隔物和聚酯柔性线圈单元的芳族酯介晶单元,其包括在存在下使α,ω-双(羟基苯甲酰氧基)烷烃单体与芳族酰氯反应 的功能化柔性线圈低聚物,其中首先在第一个较低温度下首先形成酰氯封端的双(羟烷基对苯二酸酯)低聚物,然后在第二个较高温度下通过使该低聚物与 功能化柔性线圈低聚物。

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