Polyester films
    51.
    发明申请
    Polyester films 有权
    聚酯薄膜

    公开(公告)号:US20050118442A1

    公开(公告)日:2005-06-02

    申请号:US10501092

    申请日:2003-01-09

    摘要: The present invention is a polyester film obtained by blending 10-90 wt % of polyester (A) containing ethylene terephthalate as a main constituent component and 90-10 wt % of crystalline polyester (B) different from this polyester (A), which has a half value width of a recrystallization peak obtained by a differential scanning calorimeter (DSC) by lowering temperature of not more than 0.25. The crystalline polyester (B) is preferably a polyester selected from polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and polyethylene 2,6 naphthalate (PEN). According to the polyester of the present invention, a polyester film superior in mechanical characteristic and design property and having high crystallinity, which can be used alone or adhered to a metal sheet and which is free of whitening even when the film is heat treated at near or not lower than the melting point can be obtained, and further, a polyester film having such superior resistance to whitening (design property), which is not easily damaged, can be obtained.

    摘要翻译: 本发明是将10-90重量%的含有对苯二甲酸乙二醇酯作为主要成分的聚酯(A)和不同于该聚酯(A)的90〜10重量%的结晶性聚酯(B) 通过差示扫描量热计(DSC)通过降低温度不大于0.25获得的再结晶峰的半值宽度。 结晶性聚酯(B)优选为选自聚对苯二甲酸丁二醇酯(PBT),聚对苯二甲酸丙二醇酯(PTT),聚萘二甲酸乙二醇酯(PEN)等的聚酯。 根据本发明的聚酯,具有机械特性和设计性能优异且结晶性高的聚酯膜,其可以单独使用或粘附到金属片上,即使在近乎热处理的情况下也不会发白 或不低于熔点,此外,可以获得不易损坏的耐美白性(设计性)优异的聚酯膜。

    Method for preparing .alpha.-L-aspartyl-L-phenylalanine
    57.
    发明授权
    Method for preparing .alpha.-L-aspartyl-L-phenylalanine 失效
    制备α-L-天冬氨酰-L-苯丙氨酸的方法

    公开(公告)号:US5362903A

    公开(公告)日:1994-11-08

    申请号:US152134

    申请日:1993-11-16

    CPC分类号: C07K5/0613

    摘要: This invention is directed to provide a method for obtaining .alpha.-L-aspartyl-L-phenylalanine selectively in high yields. Diffusion dialysis with an ion exchange membrane is used to decrease hydrochloric acid concentration of a mixed solution containing hydrochloric acid and one or more of four .alpha.-L-aspartyl-L-phenylalanine derivatives, i.e., .alpha.-L-aspartyl-L-phenylalanine methyl ester, .alpha.-L-aspartyl-L-phenylalanine, .alpha.-L-aspartyl-L-phenylalanine-.beta.-methyl ester and .alpha.-L-aspartyl-L-phenylalanine dimethyl ester. The resultant solution is concentrated, to which a base is added for neutralization. Subsequently, .alpha.-L-aspartyl-L-phenylalanine is crystallized and isolated.

    摘要翻译: 本发明旨在提供以高产率选择性地获得α-L-天冬氨酰基-L-苯丙氨酸的方法。 使用离子交换膜的扩散透析用于降低含有盐酸和四种α-L-天冬氨酰基-L-苯丙氨酸衍生物中的一种或多种的混合溶液的盐酸浓度,即α-L-天冬氨酰基-L-苯丙氨酸甲酯 酯,α-L-天冬氨酰基-L-苯丙氨酸,α-L-天冬氨酰基-L-苯丙氨酸-β-甲酯和α-L-天冬氨酰基-L-苯丙氨酸二甲酯。 将所得溶液浓缩,向其中加入碱进行中和。 随后,将α-L-天冬氨酰基-L-苯丙氨酸结晶并分离。

    Highly adaptive recording method and optical recording apparatus

    公开(公告)号:US08514683B2

    公开(公告)日:2013-08-20

    申请号:US13449085

    申请日:2012-04-17

    IPC分类号: G11B7/00

    CPC分类号: G11B7/00456 G11B7/0062

    摘要: An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.