摘要:
A compression recovery sheet which comprises a fiber aggregate containing 10 to 90% by weight of an elastomeric component and has a basis weight of 15 to 100 g/m2, a no-load thickness of 1 to 10 mm, and a compressive recovery of 60% or more and an absorbent article containing the same are disclosed.
摘要翻译:一种压缩恢复片,其包含含有10〜90重量%的弹性体成分的纤维聚集体,其单位面积重量为15〜100g / m 2,空载厚度为1〜10mm, 回收率为60%以上,吸收性物品含有该物品。
摘要:
A multi-pattern is formed to have a plurality of read/write elements on a plane. A medium is formed on a single crystal of Si substrate. A motion of the head relative to the medium is made a simple harmonic motion to form linear recorded bits. This allows fabricating a storage system which provides features of small size, high recording density, high transfer rate, and short access time all at once. The recording density accomplished by the small storage system is extremely high, and may be as high as 10 gigabits per square inch.
摘要:
A hydrogenated or fluorinated carbon protective film is formed on a disk through a plasma CVD method by use of a hydrocarbon-containing reaction gas as a raw material, where the disk comprises a non-magnetic substrate on which a non-magnetic undercoat film and a magnetic film are successively formed, wherein the protective film has a thickness of 2.2 g/cm3 or more.
摘要翻译:通过使用含烃反应气体作为原料,通过等离子体CVD法在盘上形成氢化或氟化碳保护膜,其中盘包括非磁性基底,在其上具有非磁性底涂层和 依次形成磁性膜,其中保护膜的厚度为2.2g / cm 3以上。
摘要:
A process for producing 2,2'-bis(hydroxymethyl)alkanoic acid of the present invention, comprises:a 2,2'-bis(hydroxymethyl)alkanal production step (A1) of reacting aliphatic aldehyde having two hydrogen atoms bonded to .alpha.-carbon atom thereof, with formaldehyde in the presence of a water-soluble base;a 2,2'-bis(hydroxymethyl)alkanoic acid production step (B) of subjecting the thus obtained aqueous solution (a) containing 2,2'-bis(hydroxymethyl)alkanal and the base to oxidation treatment; andan alkanoic acid recovery step (C) of separating 2,2'-bis(hydroxymethyl)alkanoic acid from the thus obtained aqueous solution (b) containing the 2,2'-bis(hydroxymethyl)alkanoic acid and the base,in the alkanoic acid recovery step (C), a mineral acid being added to the aqueous solution (b) in an amount of not more than one equivalent based on the base in the aqueous solution (b) to convert the base into a salt thereof,water in the aqueous solution (b) being replaced with an organic solvent to form an organic solvent solution, and after removing the mineral acid salt precipitated from the organic solvent solution, 2,2'-bis(hydroxymethyl)alkanoic acid being crystallized from the organic solvent solution.
摘要:
An optically active .beta.-aminoalkoxyborane complex of the formula (I): ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.11 aralkyl or C.sub.6 -C.sub.10 aryl, R.sup.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl or C.sub.7 -C.sub.11 aralkyl, or R.sup.1 and R.sup.2 together form (CH.sub.2)n wherein n is 3 or 4, and Ar is naphthyl, anthryl or phenanthryl, which may be substituted by from 1 to 3 substituents selected from the group consisting of halogen, nitro, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.7 -C.sub.11 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.6 alkoxy and styrene polymer substituents.
摘要:
1. An optically active .beta.-aminoalkoxyborane complex of the formula (I): ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.11 aralkyl or C.sub.6 -C.sub.10 aryl, R.sup.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl or C.sub.7 -C.sub.11 aralkyl, or R.sub.1 and R.sup.2 together form (CH.sub.2).sub.n wherein n is 3 or 4, and Ar is naphthyl, anthryl or phenanthryl, which may be substituted by from 1 to 3 substituents selected from the group consisting of halogen, nitro, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.7 -C.sub.11 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.6 alkoxy and styrene polymer substituents.
摘要:
It is disclosed that a longitudinal magnetic recording medium and apparatus has recording sections having longitudinal magnetic films magnetically isolated in a recording direction. The magnetically isolated recording sections can record a single bit each so that the longitudinal magnetic recording medium can remove the irregular domain boundary of its own caused on boundaries of magnetization reversals in the recording direction. This can improve the signal-to-media noise ratio to a great extent in writing and reading.
摘要:
A magnetic recording medium is constructed with a substrate made of glass, one or two underlayers, and a magnetic film. In order that the easy magnetization axis of the magnetic film is parallel to the magnetic film, an underlayer having an NaCl crystallographic structure is superposed on the substrate. A magnetic film made of a Co based alloy having a hexagonal close packed crystallographic structure is formed on this underlayer, putting an underlayer made of a material having a body centered cubic crystallographic structure therebetween at need. Magnetic anisotropy of the magnetic film is increased by forming grooves in a predetermined direction in a surface portion of the substrate. These grooves play a role also for defining the orientation of the underlayer made of the material having an NaCl crystallographic structure.