Ethylene-vinyl alcohol copolymer hollow fiber membranes and method of
producing same
    1.
    发明授权
    Ethylene-vinyl alcohol copolymer hollow fiber membranes and method of producing same 失效
    乙烯 - 乙烯醇共聚物中空纤维膜及其制备方法

    公开(公告)号:US4317729A

    公开(公告)日:1982-03-02

    申请号:US142227

    申请日:1980-04-21

    摘要: A hollow fiber membrane made of an ethylene-vinyl alcohol copolymer is provided, which is characterized in that, when observed in a dry state with an electron microscope, the hollow fiber membrane has at least one dense, active layer (or skin layer) on the inside and/or outside surface thereof and further a three-layered structure comprising two layers respectively contacting the inside and outside surfaces and each consisting of a plurality of particles bonded together and having particle sizes of 0.01 to 2 microns and a substantially particle-free homogeneous layer lying between the two layers.A method of producing such hollow fiber membranes is also provided comprising spinning a spinning solution prepared by dissolving an ethylene-vinyl alcohol copolymer in a solvent mainly consisting of dimethyl sulfoxide, dimethylacetamide, pyrrolidone, N-methylpyrrolidone or a mixture of these through a spinneret for hollow fiber production while simultaneously introducing a coagulating liquid through the central aperture of said spinneret, passing the spun fiber through a gaseous atmosphere such that the fiber is drawn to 3 to 30 times its extrusion rate, and coagulating the fiber in a coagulation bath at a temperature within the range specified below:When 15.ltoreq.C.ltoreq.40, -15.ltoreq.T.ltoreq.1/4C+10where C is polymer concentration (weight %) and T is coagulation temperature (.degree.C.).

    摘要翻译: 提供一种由乙烯 - 乙烯醇共聚物制成的中空纤维膜,其特征在于,当用电子显微镜在干燥状态下观察时,中空纤维膜具有至少一个致密的有源层(或表层) 其内部和/或外部表面,并且还包括三层结构,其包括分别接触内表面和外表面的两层,并且各自由粘合在一起并具有0.01至2微米的颗粒尺寸和基本上无颗粒的多个颗粒组成 均匀层位于两层之间。 还提供了制造这种中空纤维膜的方法,包括将通过将乙烯 - 乙烯醇共聚物溶解在主要由二甲基亚砜,二甲基乙酰胺,吡咯烷酮,N-甲基吡咯烷酮或它们的混合物的溶剂中制备的纺丝溶液通过喷丝头纺丝, 中空纤维生产,同时通过所述喷丝头的中心孔引入凝固液,使纺丝纤维通过气态气氛,使得纤维被拉伸至其挤出速率的3至30倍,并将纤维在凝固浴中凝固 温度在下面规定的范围内:当15℃/ 40℃时,-15℃= 1 / 4C + 10其中C是聚合物浓度(重量%),T是凝固温度(℃) )。

    Ethylene-vinyl alcohol hollow fiber membrane and method for the
production thereof
    2.
    发明授权
    Ethylene-vinyl alcohol hollow fiber membrane and method for the production thereof 失效
    乙烯 - 乙烯醇中空纤维膜及其制备方法

    公开(公告)号:US4385094A

    公开(公告)日:1983-05-24

    申请号:US142228

    申请日:1980-04-21

    摘要: There is provided a hollow fiber membrane of ethylene-vinyl alcohol copolymer which is produced by a process comprising extruding a spinning solution of an ethylene-vinyl alcohol copolymer in a solvent selected from the group consisting of dimethylsulfoxide, dimethylacetamide, pyrrolidone, N-methylpyrrolidone and mixtures thereof through a hollow fiber spinneret while a liquid coagulant is introduced into a central aperture of said spinneret, passing the spun fiber through a gaseous atmosphere in a manner such that the fiber is drawn 0.5 to 20 times its extrusion rate and then coagulating said fiber in a coagulating bath at a temperature within the range satisfying the following relationship:when 15.ltoreq.C.ltoreq.40, 1/4C+20.ltoreq.T.ltoreq.1/4C+57wherein C denotes the copolymer concentration of the spinning solution (wt. %) and T denotes the coagulation temperature (.degree.C.).The coagulating liquid can be water or a mixture of the same solvent as that of said spinning solution with no less than 20 weight % of water.

    摘要翻译: 提供了一种乙烯 - 乙烯醇共聚物的中空纤维膜,其通过以下方法制备,该方法包括将乙烯 - 乙烯醇共聚物的纺丝溶液在选自二甲基亚砜,二甲基乙酰胺,吡咯烷酮,N-甲基吡咯烷酮和 其混合物通过中空纤维喷丝头,同时将液体凝结剂引入所述​​喷丝头的中心孔中,使纺丝纤维以气态气氛使纤维以0.5至20倍的挤出速率拉伸,然后使纤维凝结 在满足以下关系的范围内的温度下的凝固浴中:当15℃= 40,1 / 4C + 20℃/ 1 / 4C + 57,其中C表示共聚物浓度 纺丝溶液(wt。%)和T表示凝固温度(℃)。 凝结液可以是水或与所述纺丝溶液相同溶剂的混合物,其含量不得少于20重量%。

    Method of producing ethylene-vinyl alcohol copolymer hollow fiber
membranes
    3.
    发明授权
    Method of producing ethylene-vinyl alcohol copolymer hollow fiber membranes 失效
    制备乙烯 - 乙烯醇共聚物中空纤维膜的方法

    公开(公告)号:US4362677A

    公开(公告)日:1982-12-07

    申请号:US270503

    申请日:1981-06-04

    摘要: A hollow fiber membrane made of an ethylene-vinyl alcohol copolymer is provided, which is characterized in that, when observed in a dry state with an electron microscope, the hollow fiber membrane has at least one dense, active layer (or skin layer) on the inside and/or outside surface thereof and further a three-layered structure comprising two layers respectively contacting the inside and outside surfaces and each consisting of a plurality of particles bonded together and having particle sizes of 0.01 to 2 microns and a substantially particle-free homogeneous layer lying between the two layers.A method of producing such hollow fiber membranes is also provided comprising spinning a spinning solution prepared by dissolving an ethylene-vinyl alcohol copolymer in a solvent mainly consisting of dimethyl sulfoxide, dimethylacetamide, pyrrolidone, N-methylpyrrolidone or a mixture of these through a spinneret for hollow fiber production while simultaneously introducing a coagulating liquid through the central aperture of said spinneret, passing the spun fiber through a gaseous atmosphere such that the fiber is drawn to 3 to 30 times its original length, and coagulating the fiber in a coagulation bath at a temperature within the range specified below:When 15.ltoreq.C.ltoreq.40, -15.ltoreq.T.ltoreq.1/4C+10where C is polymer concentration (weight %) and T is coagulation temperature (.degree.C.).

    摘要翻译: 提供一种由乙烯 - 乙烯醇共聚物制成的中空纤维膜,其特征在于,当用电子显微镜在干燥状态下观察时,中空纤维膜具有至少一个致密的有源层(或表层) 其内部和/或外部表面,并且还包括三层结构,其包括分别接触内表面和外表面的两层,并且各自由粘合在一起并具有0.01至2微米的颗粒尺寸和基本上无颗粒的多个颗粒组成 均匀层位于两层之间。 还提供了制造这种中空纤维膜的方法,包括将通过将乙烯 - 乙烯醇共聚物溶解在主要由二甲基亚砜,二甲基乙酰胺,吡咯烷酮,N-甲基吡咯烷酮或它们的混合物的溶剂中制备的纺丝溶液通过喷丝头纺丝 中空纤维生产,同时通过所述喷丝头的中心孔引入凝固液,使纺丝纤维通过气态气氛,使得纤维被拉伸至其原始长度的3至30倍,并将纤维在凝固浴中凝固 温度在下面规定的范围内:当15℃/ 40℃时,-15℃= 1 / 4C + 10其中C是聚合物浓度(重量%),T是凝固温度(℃) )。

    Fibrous structure having roughened surface
    7.
    发明授权
    Fibrous structure having roughened surface 失效
    具有粗糙表面的纤维结构

    公开(公告)号:US4522873A

    公开(公告)日:1985-06-11

    申请号:US584331

    申请日:1984-02-28

    IPC分类号: D06M10/06 B32B5/16

    摘要: A fibrous structure having a roughened surface and a process for producing the same are disclosed. Upon dying, the fibrous structure is greatly improved in color depth. In addition, it gives one a more scrooping feeling than silk does.The fibrous structure has surface irregularities whose structure is such that the distance between the adjacent projections is 0.01 to 0.7 micrometer and the area of the concave portions is 0.1 to 0.8 square micrometer in 1 square micrometer of the irregularities.The fibrous structure is produced by the steps of attaching fine particles to the fiber surface in an amount of 0.001 to 10 wt % based on the fiber, said fine particles having an average primary particle diameter smaller than 0.5 micrometer and being more inert than the fiber-constituting polymer base material to low-temperature plasma, and subjecting the fiber, to which said fine particles have been attached, to low-temperature plasma, thereby forming projections which are larger than the average primary particle diameter.

    摘要翻译: 公开了具有粗糙表面的纤维结构体及其制造方法。 死亡时,纤维结构的颜色深度大大提高。 此外,它比丝绸还有一个更sc oping的感觉。 纤维结构具有表面凹凸,其结构使得相邻突起之间的距离为0.01至0.7微米,凹部的面积在1平方微米的不规则中为0.1至0.8平方微米。 该纤维结构体是通过以纤维表面附着细颗粒为0.001〜10重量%的方式制造的,所述微粒的平均一次粒径小于0.5微米,比纤维更为惰性 将高分子基体材料固定在低温等离子体中,对所述微粒子附着的纤维进行低温等离子体化,形成大于平均一次粒径的凸部。

    Flame-retardant polyvinyl alcohol base fiber
    8.
    发明授权
    Flame-retardant polyvinyl alcohol base fiber 失效
    阻燃聚乙烯醇基纤维

    公开(公告)号:US6066396A

    公开(公告)日:2000-05-23

    申请号:US319239

    申请日:1999-06-07

    摘要: A vinyl-alcohol-based polymer and vinyl-halide-based polymer are dissolved in a common organic solvent for them, a typical example of which is dimethylsulfoxide, to obtain a dope wherein a solution of the vinyl-halide-based polymer having a particle size of 1-50 .mu.m is present in the solution of the vinyl-alcohol-based polymer. This dope is spun into a low temperature solidifying bath comprising a solidifying solvent such as methanol, and the organic solvent. The resultant is subjected to extraction, drying, dry heat drawing, and optional heat shrinking or acetalization to obtain fiber. In the fiber thus obtained, the vinyl-alcohol-based polymer makes sea phases, and the vinyl-halide-based polymer makes island phases whose size is 0.1-3 .mu.m. The crystallinity degree of the vinyl-alcohol-based polymer is 65-85%.The polyvinyl-alcohol-based flame retardant fiber is useful for clothes, industrial materials, living materials and the like. It can be produced at low costs, and has excellent spinning stability and dimensional stability in hot water.

    摘要翻译: PCT No.PCT / JP98 / 04424 Sec。 371日期1999年6月7日 102(e)日期1999年6月7日PCT提交1998年10月1日PCT公布。 公开号WO99 /​​ 18267 日期1999年04月15日乙烯基醇类聚合物和乙烯基卤化物类聚合物溶解在普通的有机溶剂中,其典型的例子是二甲基亚砜,以获得涂料,其中乙烯基卤化物 - 乙烯醇类聚合物的溶液中存在粒径为1-50μm的聚合物。 将该纺丝液纺成包含固化溶剂如甲醇和有机溶剂的低温固化浴。 将所得物进行萃取,干燥,干热拉伸和任选的热收缩或缩醛化以获得纤维。 在由此获得的纤维中,乙烯醇系聚合物形成海相,卤化乙烯基系聚合物形成尺寸为0.1〜3μm的岛相。 乙烯醇系聚合物的结晶度为65〜85%。 聚乙烯醇类阻燃纤维可用于衣服,工业材料,生活材料等。 可以低成本生产,在热水中具有优异的纺丝稳定性和尺寸稳定性。

    Optical recording medium comprising (1,1,1) aluminum
    9.
    发明授权
    Optical recording medium comprising (1,1,1) aluminum 失效
    包括(1,1,1)铝的光学记录介质

    公开(公告)号:US5283095A

    公开(公告)日:1994-02-01

    申请号:US866358

    申请日:1992-04-10

    IPC分类号: C23C14/20 B32B3/02

    摘要: A metal film high in reflectivity and excellent in adhesion to a synthetic resin substrate even in the case where the metal film is sufficiently thin, is formed on a surface of the substrate by sputtering a metal target through an inert gas ion beam drawn out of an ion source in a vacuum vessel. An aluminum film coated matter formed by coating a surface of a synthetic resin substrate with an aluminum film, is characterized in that the aluminum film contains aluminum crystals at a portion in the film at a depth of not more than 600 .ANG. from a film surface thereof which contacts with the substrate. The aluminum crystals has a relation in which a crystal axis perpendicular to a (111) plane is perpendicular or substantially perpendicular to the film surface. Also, the aluminum crystals exhibits a diffraction X-ray spectrum of a (111) plane when measured by X-ray diffraction according to a diffractometer method under the following conditions: target: Cu, X-ray type: K.alpha. ray, measurement X-ray output: voltage 40 KeV, current 30 mA, longitudinal divergence limiting Sollar's slit: horizontal type, incident height limiting slit: 5 mm, incident slit: 0.4 mm, light-receiving Sollar's slit: vertical type, width limiting slit: 5 mm, diffraction X-ray monochromator: graphite horizontal plate, and diffraction method: .theta./2.theta. method.

    摘要翻译: 即使在金属膜充分薄的情况下,也能够通过溅射金属靶而在基板​​的表面上形成反射率高且对合成树脂基板的粘合性优异的金属膜,该惰性气体离子束从 离子源在真空容器中。 通过用铝膜涂布合成树脂基材的表面而形成的铝膜涂布物的特征在于,铝膜在薄膜的一部分的深度不超过600(Aangstroem)从膜中含有铝结晶 其表面与衬底接触。 铝晶体具有垂直于(111)面的晶轴<111>垂直于或基本垂直于膜表面的关系。 此外,当在以下条件下,根据衍射仪法通过X射线衍射测量时,铝晶体呈现出(111)面的衍射X射线光谱:靶:Cu,X射线型:K(α)射线, 测量X射线输出:电压40 KeV,电流30 mA,纵向发散限制Sollar狭缝:水平型,入射高度限制狭缝:5mm,入射狭缝:0.4mm,光接收Sollar狭缝:垂直型,宽度限制狭缝: 5mm,衍射X射线单色仪:石墨水平板和衍射法:(θ)/ 2(θ)法。

    Mica flake mass and resin composition with the same incorporated therein
    10.
    发明授权
    Mica flake mass and resin composition with the same incorporated therein 失效
    云母片状物质和与之相同的树脂组合物

    公开(公告)号:US4560715A

    公开(公告)日:1985-12-24

    申请号:US589337

    申请日:1984-03-14

    IPC分类号: C08K3/34

    CPC分类号: C08K3/34 C08K2201/016

    摘要: Incorporation in a thermoplastic resin of a mass of mica flakes having a median shape factor of not less than 0.76, an average particle size of not more than 2,000 .mu.m and an average aspect ratio of not less than 10 followed by molding gives moldings which are high not only in mechanical strength but also in strength at weld parts. Incorporation of said mica flake mass in a thermosetting resin followed by molding affords moldings very high in strength as well as in modulus of elasticity.

    摘要翻译: 在中等形状因子不小于0.76,平均粒径不大于2000μm,平均纵横比不小于10的多个云母薄片的热塑性树脂中加入,随后进行模塑,得到成型品 不仅机械强度高,而且焊接部件的强度也高。 将所述云母片状物质结合到热固性树脂中,然后进行模制,提供非常高的强度和弹性模量的模制品。