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1. 发明授权

US5380588A Polyvinyl alcohol-based synthetic fiber 失效
标题翻译：聚乙烯醇类合成纤维
公开(公告)号：US5380588A
公开(公告)日：1995-01-10
申请号：US902866
申请日：1992-06-23
申请人： Masakazu Nishiyama , Yasuhiro Harada , Akio Mizobe
发明人： Masakazu Nishiyama , Yasuhiro Harada , Akio Mizobe
IPC分类号： D06M11/55 , D06M13/123 , D06M13/127 , D02G3/00
CPC分类号： D06M13/123 , D06M11/55 , D06M13/127 , Y10T428/2913
摘要： Provided are polyvinyl alcohol-based synthetic fiber having excellent performances as a fiber for FRC that is prepared by autoclave curing and its very effective production processes. One of the processes comprises having a monoaldehyde or a dialdehyde or its acetalization product penetrate into the central region of a polyvinyl alcohol-based synthetic fiber at a first stage and then, at a second stage, effecting crosslinking reaction with a mixed solution containing a monoaldehyde and an acid. The other process comprises conducting acetalization with a bath containing 100 to 250 g/l of formaldehyde and 30 to 80 g/l of sulfuric acid at a temperature of 70.degree. to 100.degree. C. The processes can give a polyvinyl alcohol-based synthetic fiber having a strength of at least 11 g/d, a gel elasticity of at least 6.0.times.10.sup.-3 g/cm.multidot.d and a dissolution ratio of not more than 40% and being able to withstand an autoclave curing at 140.degree. C. which is necessary for securing the dimensional stability of the resulting cement products.
摘要翻译：本发明提供一种聚乙烯醇系合成纤维，其具有优异的性能，作为通过高压釜固化制备的FRC纤维及其非常有效的制备方法。其中一个方法包括在第一阶段使单醛或二醛或其缩醛产物渗入聚乙烯醇类合成纤维的中心区域，然后在第二阶段与含有单醛的混合溶液进行交联反应和酸。另一方法包括在70至100℃的温度下，用含有100至250g / l甲醛和30至80g / l硫酸的浴进行缩醛化。该方法可以得到基于聚乙烯醇的合成纤维具有至少11g / d的强度，至少6.0×10 -3 g / cm×d的凝胶弹性和不大于40％的溶解比，并且能够耐受140℃下的高压釜固化，这是必要的以确保所得水泥产品的尺寸稳定性。

2. 发明授权

US5110678A Synthetic polyvinyl alcohol fiber and process for its production 失效
标题翻译：合成聚乙烯醇纤维及其生产工艺
公开(公告)号：US5110678A
公开(公告)日：1992-05-05
申请号：US512104
申请日：1990-04-20
申请人： Hiroshi Narukawa , Akio Mizobe , Fumio Nakahara , Akira Kubotsu , Akitsugu Akiyama , Masakazu Nishiyama , Kenji Nagamatu , Hirotoshi Miyazaki
发明人： Hiroshi Narukawa , Akio Mizobe , Fumio Nakahara , Akira Kubotsu , Akitsugu Akiyama , Masakazu Nishiyama , Kenji Nagamatu , Hirotoshi Miyazaki
IPC分类号： D01F6/14
CPC分类号： D01F6/14 , Y10T428/29 , Y10T428/2904 , Y10T428/2913
摘要： Provided is a high-performance PVA fiber and its production.Each filament of the PVA fiber of the present invention having a structure comprising an aggregate of substantially innumerable fibrils, the fiber has high strength, elastic modulus, and resistances to fatigue, hot water and chemicals and can be pulpified while keeping its excellent features such as high strength. The PVA fiber of the present invention cannot, even drawn to a high ratio, be readily whitened by virtue of its fibril-aggregate structure, and can hence be made still higher in performances. The PVA fiber can be obtained by adding to a PVA solution a relatively large amount of surface active agent, and wet or dry-jet-wet spinning the thus prepared dope solution into an aqueous alkaline coagulating bath.

3. 发明授权

US4968561A Synthetic fiber for use in reinforcing cement mortar or concrete and cement composition containing same 失效
标题翻译：用于增强水泥砂浆或混凝土的合成纤维和含有它的水泥组合物
公开(公告)号：US4968561A
公开(公告)日：1990-11-06
申请号：US177083
申请日：1988-04-04
申请人： Akio Mizobe , Masaki Okazaki , Mitsuro Mayahara , Junichi Yoshinaka
发明人： Akio Mizobe , Masaki Okazaki , Mitsuro Mayahara , Junichi Yoshinaka
IPC分类号： C04B16/06 , D01F6/14
CPC分类号： C04B16/0641 , D01F6/14 , Y10T428/2904 , Y10T428/2913 , Y10T428/2973
摘要： A synthetic fiber suited for use as a reinforcement for cement mortar or concrete as derived from monofilaments having a tensile strength of not less than 80 kg/mm.sup.2, Young's modulus of not less than 2,300 kg/mm.sup.2, a flat cross section in which the minor axis-to-major axis ratio is 1:2 to 1:10, and a fineness of 1,000-9,000 denier, and being cut to a fiber length such that the aspect ratio (the value obtained by dividing the fiber length by the diameter of a circle equivalent in area to the cross section of the fiber) amounts to 20-150, in particular a polyvinyl alcohol fiber having the above-mentioned characteristic features, shows good dispersibility in cement mortar and produces very good reinforcing effect. Materials of construction which are excellent in workability and postcure strength can be obtained by incorporating the above-mentioned fiber to cement and the like.

4. 发明授权

US4612157A Method for production of high-tenacity, fine-denier polyvinyl alcohol fiber 失效
标题翻译：高韧度，细旦聚乙烯醇纤维的生产方法
公开(公告)号：US4612157A
公开(公告)日：1986-09-16
申请号：US690578
申请日：1985-01-11
申请人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki , Isao Sakuragi
发明人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki , Isao Sakuragi
IPC分类号： D01F6/50 , D01F6/14 , D02G3/48
CPC分类号： D01F6/14
摘要： A fine-denier, high-tenacity, water-resistant polyvinyl alcohol fiber is produced by dissolving a polyvinyl alcohol having an average degree of polymerization between 1,200 and 3,000, boric acid or a salt thereof in a proportion of 0.5 to 5 weight percent relative to said polyvinyl alcohol and an acid for adjusting a final spinning solution to pH 5 or less in water to prepare an aqueous solution containing 8 to 14 weight percent of said polyvinyl alcohol, discharging said aqueous solution as said spinning dope from a spinneret nozzle having an average orifice diameter of 0.02 to 0.04 millimeters into a bath comprising an aqueous solution containing alkali and dehydrating salt at a bath draft within a range of 10 to -60 percent, and finally stretching the resulting tow at least 10-fold. The fine-denier fiber thus obtained has a marked reinforcing effect on various materials, particularly inorganic hydraulic materials such as cement.
摘要翻译：通过将平均聚合度为1200〜3000的聚乙烯醇与硼酸或其盐的比例相对于0.5〜5重量％的比例溶解，得到细旦，高强度，耐水性聚乙烯醇纤维所述聚乙烯醇和用于将最终纺丝溶液调节至pH为5以下的酸的酸，以制备含有8至14重量％的所述聚乙烯醇的水溶液，将所述水溶液作为所述纺丝原液从具有平均值的喷丝头喷嘴排出孔直径为0.02至0.04毫米，包括含有碱和脱水盐的水溶液的浴，浴温为10至-60％，最后将所得的丝束拉伸至少10倍。这样得到的细旦纤维对各种材料，特别是无机水硬性材料如水泥具有明显的增强效果。

5. 发明授权

US4524042A Process for producing hydraulically setting extruding materials 失效
标题翻译：生产液压成型挤出材料的方法
公开(公告)号：US4524042A
公开(公告)日：1985-06-18
申请号：US515545
申请日：1983-07-20
申请人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki
发明人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki
IPC分类号： B28B1/52 , B28B3/20 , C04B16/06 , C04B28/02 , D02G1/20
CPC分类号： C04B28/02 , C04B16/0641
摘要： In a process for producing fiber-reinforced hydraulically setting extruding materials, the process which comprises, not adding the reinforcing fiber in the form of single fibers to the starting materials, but employing it as collected yarns by collecting the single fibers with a collecting agent, uniformly dispersing them in the starting materials, then releasing the collected condition of said dispersed collected yarns and splitting into single fibers by swelling and dissolution of the collecting agent and by the shear force by a screw etc., thereby the dispersion is improved.The single fibers having a great aspect ratio which have been released from the collected condtion are uniformly dispersed in the extruding material, and a remarkable reinforcing effect is obtained.
摘要翻译：在制造纤维增强液压挤出材料的方法中，该方法包括不将单纤维形式的增强纤维加入起始原料中，而是通过用收集剂收集单纤维将其作为收集的纱线，将它们均匀分散在起始原料中，然后释放所分散收集的纱线的收集状态，通过收集剂的溶胀和溶解以及通过螺杆等的剪切力将其分裂成单纤维，从而改善了分散体。已经从收集的条件中释放的具有很大纵横比的单纤维均匀地分散在挤出材料中，并且获得显着的增强效果。

6. 发明授权

US4474907A Fiber-reinforced hydraulically setting materials 失效
标题翻译：纤维增强液压固化材料
公开(公告)号：US4474907A
公开(公告)日：1984-10-02
申请号：US506992
申请日：1983-06-23
申请人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki
发明人： Tsuneo Genba , Akio Mizobe , Masaki Okazaki
IPC分类号： C04B16/06 , C04B31/34
CPC分类号： C04B16/06
摘要： Polyvinyl alcohol synthetic fibers are used as reinforcing materials for hydraulically setting materials, and by selecting the aspect ratio of the polyvinyl alcohol fiber and the dispersing agent for said fiber, adequate dispersion is made possible even with the fiber of 2 denier or less, thereby a higher reinforcing effect may be achieved.The polyvinyl alcohol fiber is obtained by depositing 0.1-3.0% by weight based on the fiber of an oxidized polyethylene having an acid value of 5-150, and has a single yarn fineness of 0.5-2 denier, a length of 3-8 mm and an aspect ratio of 200-800, and the hydraulically setting material contains 0.1-4% by weight of said fiber.
摘要翻译：聚乙烯醇合成纤维用作水硬定型材料的增强材料，通过选择聚乙烯醇纤维和所述纤维的分散剂的纵横比，即使纤维为2旦以下即可实现充分的分散，可以实现更高的增强效果。聚乙烯醇纤维通过以酸值为5-150的氧化聚乙烯的纤维为基础沉积0.1-3.0重量％，单丝纤度为0.5-2旦尼尔，长度为3-8毫米和纵横比为200-800，水硬固化材料含有0.1-4重量％的所述纤维。

7. 发明授权

US5164431A Process for producing molded articles 失效
标题翻译：制造模制品的方法
公开(公告)号：US5164431A
公开(公告)日：1992-11-17
申请号：US623679
申请日：1990-12-06
申请人： Akio Mizobe , Kenji Saimen , Sotaro Itadani , Ken Yuki
发明人： Akio Mizobe , Kenji Saimen , Sotaro Itadani , Ken Yuki
IPC分类号： C04B24/26 , C04B28/02
CPC分类号： C04B28/02 , C04B24/2623 , C04B2103/44 , C04B2111/50 , Y02W30/97
摘要： Provided is a process for producing molded articles having excellent flexural strength, flexibility and dimensional stability, which comprises autoclave-curing at not lower than 100.degree. C. an aqueous composition comprising a hydraulic material (A) and a polyvinyl alcohol (B) powder, said polyvinyl alcohol (B) powder being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A).Also provided are molded articles comprising a hydraulic material (A) and a polyvinyl alcohol (B), said polyvinyl alcohol (B) being contained in an amount of 0.1 to 20% by weight based on the weight of said hydraulic material (A), said molded article having a structure comprising said polyvinyl alcohol (B) having once dissolved and then solidified being dispersed therein in the form of islands. These molded articles have excellent flexural strength, flexibility and dimensional stability.
摘要翻译：提供一种制造具有优异的弯曲强度，柔软性和尺寸稳定性的成型体的方法，其包括在不低于100℃的高压釜固化下，包含水硬性材料（A）和聚乙烯醇（B）粉末的水性组合物，所述聚乙烯醇（B）粉末的含量相对于所述液压材料（A）的重量为0.1〜20重量％。还提供了包含液压材料（A）和聚乙烯醇（B）的模塑制品，所述聚乙烯醇（B）的含量为所述水硬性材料（A）的重量的0.1-20重量％所述模制品具有包含一旦溶解并随后固化的所述聚乙烯醇（B）以岛状分散在其中的结构。这些模制品具有优异的弯曲强度，柔韧性和尺寸稳定性。

8. 发明授权

US4267016A Polyvinyl alcohol fiber for binding a fibrous sheet and a process for the preparation thereof 失效
标题翻译：用于粘合纤维片材的聚乙烯醇纤维及其制备方法
公开(公告)号：US4267016A
公开(公告)日：1981-05-12
申请号：US87347
申请日：1979-10-23
申请人： Masaki Okazaki , Akio Mizobe
发明人： Masaki Okazaki , Akio Mizobe
IPC分类号： D01F6/50 , D21H13/16 , D21H5/12
CPC分类号： D01F6/50 , D21H13/16
摘要： A water-soluble polyvinyl alcohol fiber is obtained by subjecting to the conventional dry or wet spinning process, a solution prepared by adding to a polyvinyl alcohol aqueous solution, an adduct composed of a polyamide condensation product and 1-halogen-2,3-epoxy propane or ethylene glycol diglycidyl ether in the range from 5 to 50 percent by weight based upon the polyvinyl alcohol-after the solution's pH has been adjusted to 2 to 7. The resulting fiber, which has not been subjected to any heat treatment at a temperature above 120.degree. C. is blended with a fibrous material to make a fibrous sheet such as paper or non-woven fabric. By virtue of a subsequent heat-treatment, said polyvinyl alcohol fiber becomes boiling water-resistant; as a result, the wet strength of the fibrous sheet is significantly increased.
摘要翻译：通过常规干法或湿法纺丝法得到水溶性聚乙烯醇纤维，通过将聚酰胺缩合产物和1-卤素-2,3-环氧化合物加成的加合物加入到聚乙烯醇水溶液中制备的溶液丙烷或乙二醇二缩水甘油醚在溶液的pH值调节至2至7之后，基于聚乙烯醇为5至50重量％。所得纤维在温度下未进行任何热处理高于120℃与纤维材料混合以制成纤维片如纸或无纺织物。通过随后的热处理，所述聚乙烯醇纤维变得耐沸水; 结果，纤维片的湿强度显着增加。

9. 发明授权

US3987140A Method of preparing polyvinyl alcohol fibers having improved properties 失效
标题翻译：制备具有改进性能的聚乙烯醇纤维的方法
公开(公告)号：US3987140A
公开(公告)日：1976-10-19
申请号：US350151
申请日：1973-04-11
申请人： Akio Mizobe , Tomoo Saheki , Shigekazu Kobayashi
发明人： Akio Mizobe , Tomoo Saheki , Shigekazu Kobayashi
IPC分类号： C08F8/00 , D01F6/14 , D01D1/10
CPC分类号： D01F6/14 , C08F8/00 , D01F1/10
摘要： Disclosed is a method for preparing polyvinyl alcohol fibers which comprises spinning an aqueous solution of polyvinyl alcohol containing boric acid or a borate and from about 0.01-5 weight per cent based on said polyvinyl alcohol of an additive comprising an amino acid, an amine, salicylic acid and derivatives thereof or a derivative of pyridine into an alkaline coagulation bath, and subsequently treating the resultant spun fiber by roller drawing, neutralizing with acid, wet hot drawing, washing with water, drying and dry hot drawing.

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