Water-soluble film of polyvinyl alcohol
    3.
    发明授权
    Water-soluble film of polyvinyl alcohol 有权
    聚乙烯醇水溶性薄膜

    公开(公告)号:US07067575B2

    公开(公告)日:2006-06-27

    申请号:US10703519

    申请日:2003-11-10

    IPC分类号: C08K5/053 C08L29/04

    摘要: A water-soluble film made from a resin composition comprising (A) 100 parts by weight of an anionic group-modified polyvinyl alcohol having a viscosity of 10 to 35 mPa·s measured at 20° C. with respect to a 4% by weight aqueous solution thereof, an average degree of hydrolysis of 80.0 to 99.9% by mole and a rate of anionic group modification of 1 to 10% by mole, (B) 20 to 50 parts by weight of a plasticizer, (C) 2 to 30 parts by weight of a filler, and (D) 0.01 to 2.5 parts by weight of a surfactant. The water-soluble film has an excellent water solubility, and is not gelled or insolubilized even if chemicals containing a boric acid substance, particularly sodium perborate, are packaged therein or even if it is put in an aqueous solution of a boric acid substance, particularly sodium perborate.

    摘要翻译: 一种由树脂组合物制成的水溶性薄膜,其包含(A)100重量份在20℃下测定的粘度为10〜35mPa·s的阴离子性基团改性的聚乙烯醇相对于4重量% 水溶液,平均水解度为80.0〜99.9摩尔%,阴离子基团改性率为1〜10摩尔%,(B)20〜50重量份增塑剂,(C)2〜30 (D)0.01〜2.5重量份的表面活性剂。 即使含有硼酸物质,特别是过硼酸钠的化学物质也被包装在其中,或者即使放入硼酸物质的水溶液中也不会凝胶化或不溶化,特别是水溶性膜。 过硼酸钠。

    Optical recording medium
    4.
    发明申请
    Optical recording medium 审中-公开
    光记录介质

    公开(公告)号:US20050237914A1

    公开(公告)日:2005-10-27

    申请号:US11169922

    申请日:2005-06-30

    摘要: An optical recording medium comprising at least a land and a groove where information-recording/reproducing is carried out by a flying type optical head. The optical recording medium keep the flying height of the flying optical head constant in the entire region of the recording/reproducing area, and is provided with at least one characteristic among the following characteristics: RP which is dependent on land and groove parameters and the flying height satisfied the relationship of H>Rp 01.H; centerline means roughness Ra is in the range of 0.2 nm Ra 2.0 nm, and the layer thickness of a liquid lubricant layer satisfies the relation of ΔRp≦λ/16NA which is dependent on the effective numerical aperature, laser wavelength and surface parameters is satisfied where all parameters in the formula are defined in the specification; and the height of a header area is different from the height of a land portion.

    摘要翻译: 至少包括通过飞行型光学头执行信息记录/再现的平台和凹槽的光学记录介质。 光记录介质保持飞行光学头的飞行高度在记录/再现区域的整个区域中恒定,并且具有以下特征中的至少一个特征:取决于平面和凹槽参数的RP和飞行 高度满足H> Rp 01.H的关系; 中心线表示粗糙度Ra在0.2nm Ra 2.0nm的范围内,液体润滑剂层的层厚度满足取决于有效数值的DeltaRp <=λ/ 16NA的关系,满足激光波长和表面参数 其中公式中的所有参数在规范中定义; 并且标题区域的高度与陆地部分的高度不同。