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1. 发明专利

JP2005089606A Polyvinyl alcohol-based polymer and method for producing the same 有权
标题翻译：聚乙烯醇基聚合物及其生产方法
公开(公告)号：JP2005089606A
公开(公告)日：2005-04-07
申请号：JP2003324828
申请日：2003-09-17
申请人： Kuraray Co Ltd , 株式会社クラレ
发明人： YANAI HISAMICHI , TOKUDA YOSHIHIRO , TOKUYASU HITOSHI , MIYATA KIMIKO , FUJIWARA NAOKI , KUSUFUJI TAKESHI
IPC分类号： C08F8/00 , C08F8/12 , C08F16/06 , C08J3/05 , C08J3/12 , C08L29/04
CPC分类号： C08J3/05 , C08F8/12 , C08J3/12 , C08J2329/04 , C08F118/08
摘要： PROBLEM TO BE SOLVED: To provide a polyvinyl alcohol(PVA) whose solubility in water is significantly changeable enough with a slight temperature change e.g. so as to be low in solubility in low-temperature water but quickly dissolve in hot water, and to provide a method for producing the PVA. SOLUTION: The method for producing the polyvinyl alcohol-based polymer comprises a transesterification reaction between a polyvinyl ester polymer and an alcohol is advanced in a reaction mixture comprising the polyvinyl ester polymer, the alcohol and a basic compound, the polymer at least part of which is transesterified is deposited from the reaction mixture, and the transesterification reaction is advanced further in the resultant reaction mixture containing the deposited polymer. In the above process, the temperature of the reaction mixture when the polymer at least part of which is transesterified begins to deposit is set at 75 to 150°C. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种聚乙烯醇（PVA），其在水中的溶解度显着变化，具有轻微的温度变化，例如，从而在低温水中的溶解度低，但迅速溶解于热水中，提供PVA的制造方法。解决方案：聚乙烯醇类聚合物的制造方法包括聚乙烯基酯类聚合物和醇之间的酯交换反应，在包含聚乙烯基酯聚合物，醇和碱性化合物的反应混合物中，至少聚合物其中一部分被酯交换反应从反应混合物中沉积出来，并在得到的含沉积聚合物的反应混合物中进一步推进酯交换反应。在上述方法中，当至少部分酯交换的聚合物开始沉积时，反应混合物的温度设定在75〜150℃。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JPH09278281A POLYURETHANE ELASTIC FIBER WIND AND ITS MANUFACTURE 失效
公开(公告)号：JPH09278281A
公开(公告)日：1997-10-28
申请号：JP9374996
申请日：1996-04-16
申请人： KURARAY CO
发明人： YANAI HISAMICHI , NAKAYAMA KIMIO , KITAMURA TAKANORI , OKUMA HIROKAZU , UEHATA AKIHIRO
IPC分类号： B65H55/00 , D01F6/70 , D02J13/00
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of density groups or stripes when cross weaving with nylon or polyester fibers is performed and high-temperature or high-temperature and high-pressure dyeing is performed by setting a relative viscosity difference between the innermost layer and the outermost layer of a wind after heating and aging to a specified value and storage elasticity in the specified temperatures of the innermost and outermost layers to a specified value or over. SOLUTION: When a melted and spun polyurethane fiber is subjected to heat treatment and solid polymerization is performed, by considering not only a moisture content but also a temperature/atmosphere heat treatment condition or the like, a polyurethane elastic fiber more uniform in material quality is obtained. Even for high-temperature and high-pressure dyeing when cross weaving is performed with other fibers such as nylon or polyester fibers, the occurrence of density groups or stripes is prevented. In other words, when a fabric obtained by cross weaving with a fiber such as nylon having a high melting point is dyed in a high temperature or in a high temperature and by a high pressure, a relative viscosity difference between the innermost layer and the outermost layer of the wind is set to 0.10 to -0.10, or preferably 0.05 to -0.10, and a storage elasticity in a temperature of 130 deg.C is set to 4.5×10 dyn/cm or over, preferably 6.0×10 dyn/cm or over.

3. 发明专利

JPH10130328A PRODUCTION OF POLYVINYL ALCOHOL 失效
公开(公告)号：JPH10130328A
公开(公告)日：1998-05-19
申请号：JP28961196
申请日：1996-10-31
申请人： KURARAY CO
发明人： KITAMURA TAKANORI , YANAI HISAMICHI
IPC分类号： C08F8/12 , C08F16/06
摘要： PROBLEM TO BE SOLVED: To obtain poly(vinyl alcohol) that is free from sodium ion, can efficiently reduce the residue of the catalyst components and is formed as an increased reaction rate by using dialkyl sulfoxide as a solvent and a psecific compound as a catalyst. SOLUTION: A dialkyl sulfoxide, preferably dimethyl sulfoxide is used as a solvent and a tetraalkylammonium hydroxide of the formula: R1 R2 R3 R4 N OH (R1 -R4 are each an alkyl of 10 or less carbon atoms which may contains an aryl group) is used as a catalyst to effect the alcoholysis of poly(vinyl ester). The reaction temperature of the alcoholysis is set, for example, to 30-120 deg.C in the reaction system under the normal pressure.

4. 发明专利

JPH0578403A PRODUCTION OF ETHYLENE-VINYL ESTER COPOLYMER 失效
公开(公告)号：JPH0578403A
公开(公告)日：1993-03-30
申请号：JP2736092
申请日：1992-01-17
申请人： KURARAY CO
发明人： YANAI HISAMICHI , KITAMURA TAKANORI , NAKAHARA FUMIO , SHIMIZU KATSUMI , AOYAMA AKEMASA , MORIYA TAKESHI
IPC分类号： C08F2/06 , C08F2/04 , C08F6/06 , C08F6/10 , C08F10/00 , C08F210/02 , C08F218/02 , C08F218/04
摘要： PURPOSE:To efficiently obtain the subject copolymer useful as food packaging containers, etc., with hardly any deterioration in polymerization degree by copolymerizing ethylene with a vinyl ester in the presence of a radical polymerization initiator using a dialkyl sulfoxide as a polymerization solvent. CONSTITUTION:Ethylene and a vinyl ester (e.g. vinyl acetate) are filled in a high-pressure autoclave and copolymerization is carried out in the presence of a radical polymerization initiator (e.g. azobisisobutyronitrile) at 60 deg.C reaction temperature using a dialkyl sulfoxide (e.g. dimethyl sulfoxide) as a polymerization solvent by regulating the ethylene pressure to 43kg/cm G for 5hr The dialkyl sulfoxide is then added to the polymerization solution to distill away and remove the residual monomer from the polymerization system kept in a state of a liquid phase and

5. 发明专利

JPH0489474A PREPARATION OF 1ALPHA-HYDROXY PRE-VITAMIN D DERIVATIVE 失效
公开(公告)号：JPH0489474A
公开(公告)日：1992-03-23
申请号：JP19947490
申请日：1990-07-26
申请人： KURARAY CO , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： NAKAGAWA SUNAO , YANAI HISAMICHI , SHIONO MANZO , MURAMATSU TAKEHIKO , MORI MIKIO , AMANO MASAYASU
IPC分类号： C07J7/00 , C07C401/00 , C07J9/00
摘要： PURPOSE:To enable to selectively prepare a compound useful as a synthetic intermediate for a therapeutic agent for calcium metabolism-deicient diseases in a good yield by irradiating a 1alpha-hydroxytachysterol derivative with UV laser rays having a specific wavelength. CONSTITUTION:A compound of formula I [R , R are H, OH-protecting group; R , R are lower alkyl, or form ethylene together; X is O, methylene, vinylene; Y is H, methyl, OR ; Z is H, OR (R , R are H. OH-protecting group); (n) is 0-4] is irradiated with UV later rays having a wavelength of 280-400nm. The compound of formula I is irradiated with a UV laser rays-generating laser such as krypton fluoride excimer laser to prepare the objective compound.

6. 发明专利

JPH1030006A PRODUCTION OF FORMED ARTICLE OF ETHYLENE-VINYL ALCOHOL COPOLYMER 失效
公开(公告)号：JPH1030006A
公开(公告)日：1998-02-03
申请号：JP9710897
申请日：1997-04-15
申请人： KURARAY CO
发明人： YANAI HISAMICHI , KITAMURA TAKANORI , NAKAHARA FUMIO , SHIMIZU KATSUMI , AOYAMA AKEMASA , MORIYA TAKESHI
IPC分类号： C08F2/06 , C08F6/10 , C08F8/12 , C08F210/02 , C08F216/06 , C08F218/04 , C08J5/00 , C08J5/18 , D01F6/34
摘要： PROBLEM TO BE SOLVED: To obtain a formed article composed of an ethylene-vinyl alcohol copolymer having a broad ethylene content range and high polymerization degree compared with a polymer produced by the solution polymerization in methanol at a low production cost. SOLUTION: An ethylene-vinyl ester copolymer (A) is subjected to alcoholysis in liquid phase using a dialkyl sulfoxide as a solvent to obtain the objective ethylene-vinyl alcohol copolymer (B). The solution of the copolymer B is brought into contact with a non-solvent of the component B or a mixed solution containing >=20wt.% of the non-solvent and formed to the desired form by wet forming or dry-wet forming.

7. 发明专利

JPH05100115A POLARIZING FILM 失效
公开(公告)号：JPH05100115A
公开(公告)日：1993-04-23
申请号：JP29084191
申请日：1991-10-09
申请人： KURARAY CO
发明人： NAGAO MASAHIRO , YANAI HISAMICHI
IPC分类号： G02B5/30
摘要： PURPOSE:To provide the polarizing film having extremely outstanding water resistance, wet heat resistance, durability and optical characteristics. CONSTITUTION:This polarizing film consists of an ethylene/vinyl alcohol copolymer(EVOH) having >=0.1liter/g ultimate viscosity measured at 30 deg.C in a solvent mixture composed of 85wt.% phenol and 15wt.% water and 3 to 24mol% ethylene content. A film consisting of the EVOH having >=0.1liter/g ultimate viscosity and 13 to 24mol% ethylene content is immersed into water kept at >=40 deg.C and is then dyed by an iodine compd.

8. 发明专利

JPH0559116A PRODUCTION OF ETHYLENE-VINYL ALCOHOL COPOLYMER 失效
公开(公告)号：JPH0559116A
公开(公告)日：1993-03-09
申请号：JP2736292
申请日：1992-01-17
申请人： KURARAY CO
发明人： YANAI HISAMICHI , KITAMURA TAKANORI , NAKAHARA FUMIO , SHIMIZU KATSUMI , AOYAMA AKEMASA , MORIYA TAKESHI
IPC分类号： C08F8/12 , C08F210/00 , C08F210/02 , C08F216/00 , C08F216/06
摘要： PURPOSE:To obtain the subject copolymer having uniform quality and useful for food packaging container, etc., having excellent gas-barrierness in high reaction rate by carrying out alcoholysis of an ethylene-vinyl ester copolymer in liquid phase using a dialkyl sulfoxide as a solvent. CONSTITUTION:The objective ethylene-vinyl alcohol copolymer having a saponification degree of 99.9% is produced by dissolving an ethylene-vinyl ester copolymer (e.g. ethylene-vinyl acetate copolymer) in a dialkyl sulfoxide (e.g. dimethyl sulfoxide) under stirring at 70 deg.C to obtain a homogeneous solution, adding methanol and 3% sodium hydroxide-methanol solution to the solution to effect the alcoholysis of the copolymer for 20min at 70 deg.C, continuing the reaction for additional 20min, distilling away a mixture of methanol and methyl acetate from the system under reduced pressure to shift the equilibrium of the alcoholysis toward the product side, neutralizing the reaction liquid, pouring the neutralized liquid into methanol to precipitate a polymer and separating and drying the precipitated polymer.

9. 发明专利

JPH09316272A POLYVINYL ALCOHOL POWDER 失效
公开(公告)号：JPH09316272A
公开(公告)日：1997-12-09
申请号：JP13824096
申请日：1996-05-31
申请人： KURARAY CO
发明人： NARIMOTO NAOTO , KITAMURA TAKANORI , TAKENOUCHI YUJI , TSUGIYA TAKANORI , YANAI HISAMICHI
IPC分类号： C08F8/12 , C08J3/03 , C08J3/12 , C08J9/28 , C08L29/02 , C08L29/04
摘要： PROBLEM TO BE SOLVED: To obtain the subject industrially useful powder excellent in solubility in water, low in content of an organic volatile component, containing pores having an average particle diameter in a specific range. SOLUTION: This powder contains pores having 0.1-10μm average particle diameter in the ratio of 0.05-0.4cc/g. The power has preferably

10. 发明专利

JPH0578404A PRODUCTION OF ETHYLENE-VINYL ESTER COPOLYMER, ETHYLENE-VINYL ALCOHOL COPOLYMER AND MOLDED PRODUCT 失效
公开(公告)号：JPH0578404A
公开(公告)日：1993-03-30
申请号：JP2736392
申请日：1992-01-17
申请人： KURARAY CO
发明人： YANAI HISAMICHI , KITAMURA TAKANORI , NAKAHARA FUMIO , SHIMIZU KATSUMI , AOYAMA AKEMASA , MORIYA TAKESHI
IPC分类号： C08F2/06 , C08F2/04 , C08F6/00 , C08F6/06 , C08F6/10 , C08F6/12 , C08F8/12 , C08F10/00 , C08F210/02 , C08F218/02 , C08F218/04
摘要： PURPOSE:To obtain the subject copolymer, having a wide ethylene content and a high polymerization degree and alcoholysis rate by copolymerizing ethylene with a vinyl ester in the presence of a radical polymerization initiator using a dialkyl sulfoxide as a polymerization solvent. CONSTITUTION:Ethylene and a vinyl ester (e.g. vinyl acetate) are copolymerized in the presence of a radical polymerization initiator (e.g. azobisisobutyronitrile) using a dialkyl sulfoxide (e.g. dimethyl sulfoxide) as a polymerization solvent. The dialkyl sulfoxide is then added to the polymerization solution to distill away and remove the residual monomer from the polymerization system kept in a state of a liquid phase and

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