PRODUCTION OF TYPE I CELLULOSE TRIACETATE

    公开(公告)号:JPS63117001A

    公开(公告)日:1988-05-21

    申请号:JP26354486

    申请日:1986-11-05

    Applicant: DAICEL CHEM

    Abstract: PURPOSE:To facilitate the formation of type I cellulose triacetate, by evaporating a solution of cellulose triacetate in a phenolic solvent to dryness or coagulation. CONSTITUTION:A solution of cellulose triacetate in a phenolic liquid solvent is evaporated to dryness or coagulation. Said cellulose triacetate is one having a weight-average degree of polymerization >=10 and derived by acetylating at least 90% of the hydroxyl groups of the corresponding cellulose. Examples of said phenolic liquids include those of an M.P.

    COMPOSITE STRUCTURE
    32.
    发明专利

    公开(公告)号:JPS61181960A

    公开(公告)日:1986-08-14

    申请号:JP2137885

    申请日:1985-02-06

    Applicant: DAICEL CHEM

    Abstract: PURPOSE:To enable the manufacture of a composite structure useful as separa tion agent, filler or the like, by supporting polysaccharide on a whole porous carrier with the specified particle diameter and average bore diameter. CONSTITUTION:Polysaccharide is supported on a whole porous carrier with the particle diameter 1mum-1cm, the average bore diameter 10Angstrom -100mum and the ratio of bore diameter and particle size of below 1/10. The polysaccharide shall be cellose, amyloe and the like and the number-average degree of the polysaccharides is set at 5 or more, preferably 10 or more while the holding amount at 1-100 wt.% with respect to the carrier. Chemical and physical methods are available for holding the polysaccharide on the carrier. One of the physical methods is that a saccharide is disolved into a solvent to be mixed with the carrier thoroughly and the solvent is fractioned away in an air current under a reduced pressure and a raised heat. The chemical supporting method is a reactive functional group is added to the carrier and polysaccharide to bond the saccharide to the carrier. This facilitates the manufacture of a composite structure while a wide range of use is expected as it s hard in the nature.

    Cellulose ester little in fine foreign substances consisting mainly of unreacted cellulose, its manufacturing method, and molded product from the cellulose ester
    34.
    发明专利
    Cellulose ester little in fine foreign substances consisting mainly of unreacted cellulose, its manufacturing method, and molded product from the cellulose ester 有权
    纤维素酯在细小的外来物质中,主要包括无菌纤维素,其制造方法和来自纤维素酶的模制产品

    公开(公告)号:JP2007084718A

    公开(公告)日:2007-04-05

    申请号:JP2005276261

    申请日:2005-09-22

    Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a cellulose ester, which can give in a short reaction time the cellulose ester little in fine foreign substances consisting mainly of the unreacted cellulose; to provide the cellulose ester manufactured by the above method; and to provide a molded product consisting of the cellulose ester which hardly has optical flaws when having become the molded product, such as a film, with the use of the cellulose ester and which is suited for an optical film, polarizing plate protection film, optical compensation film, optical retardation film and the like. SOLUTION: The cellulose ester is manufactured via the step wherein cellulose is rendered into slurry in water of an amount 1-300 times by mass that of the cellulose and subjected to the activation treatment. This gives the cellulose ester little in the fine foreign substances consisting mainly of the unreacted cellulose. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供纤维素酯的制造方法,其可以在较短的反应时间内给出主要由未反应纤维素组成的细小异物的纤维素酯; 以提供通过上述方法制造的纤维素酯; 并且提供由使用纤维素酯而成为模塑产品的成型产品中几乎不具有光学缺陷的纤维素酯组成的模制产品,并且适用于光学膜,偏振片保护膜,光学 补偿膜,光学延迟膜等。 解决方案:纤维素酯通过以下步骤制造,其中纤维素在纤维素的量为1-300倍的水中在浆液中进行,并进行活化处理。 这使得纤维素酯在主要由未反应的纤维素组成的细小异物中很少。 版权所有(C)2007,JPO&INPIT

    Cellulose acetate composition
    35.
    发明专利
    Cellulose acetate composition 审中-公开
    纤维素乙酸酯组合物

    公开(公告)号:JP2007070534A

    公开(公告)日:2007-03-22

    申请号:JP2005260839

    申请日:2005-09-08

    Inventor: SHIBATA TORU

    Abstract: PROBLEM TO BE SOLVED: To provide a composition that comprises a material having excellent affinity with a fragrance component having a herbal green fragrance and being capable of releasing the fragrance component at a low concentration and the fragrance component carried on the material. SOLUTION: The composition comprising a cellulose acetate and either or both of a cis-3-hexanol and a trans-2-hexanal is provided. Preferably, the cellulose acetate is a fibrous material having an average fiber denier diameter of 20 denier or less. Additionally, it is more preferable that the weight of either the cis-3-hexanol or the trans-2-hexanal relative to the cellulose acetate is 0.1 or less and at the same time the weight ratio of the total amount of both the cis-3-hexanol and the trans-2-hexanal relative to the cellulose acetate is 0.1 or less. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 待解决的问题:提供一种组合物,其包含与具有草本绿色香料的香味成分具有优异亲和性的材料,并且能够以低浓度释放香料组分,并且将携带在该材料上的香料成分。 解决方案:提供包含乙酸纤维素和顺式-3-己醇和反式-2-己醛中的任一种或两者的组合物。 优选地,乙酸纤维素是平均纤维旦尼尔直径为20旦尼尔或更低的纤维材料。 另外,更优选顺式-3-己醇或反式-2-己醛相对于乙酸纤维素的重量为0.1以下,同时两顺式 - 己醇的总量的重量比, 3-己醇和相对于乙酸纤维素的反式-2-己醛为0.1以下。 版权所有(C)2007,JPO&INPIT

    Cellulose ester and its preparation method
    36.
    发明专利
    Cellulose ester and its preparation method 有权
    纤维素酯及其制备方法

    公开(公告)号:JP2006089574A

    公开(公告)日:2006-04-06

    申请号:JP2004275758

    申请日:2004-09-22

    Abstract: PROBLEM TO BE SOLVED: To provide a preparation method of a cellulose ester whereby decrease of molecular weight can be suppressed and the amount of bonded sulfuric acid can be reduced without reducing the amount of a sulfuric acid catalyst. SOLUTION: The cellulose ester having a small amount of bonded sulfuric acid is prepared by acylating a cellulose by an acylating agent in the presence of the sulfuric acid catalyst and subsequently performing a maturation step wherein maturation is performed by adding a base (e.g. a calcium component) either continuously or intermittently in several batches (e.g. in three or more batches). This method can reduce the amount of bonded sulfuric acid to about 10-150 ppm and can also reduce calcium content to about 10-110 ppm. The cellulose ester is useful e.g. as an optical film (e.g. a protective film for a polarizing plate). COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 待解决的问题:为了提供纤维素酯的制备方法,可以抑制分子量的降低,并且可以减少硫酸的量而不减少硫酸催化剂的量。 解决方案:具有少量结合硫酸的纤维素酯通过酰化剂在硫酸催化剂存在下酰化纤维素并随后进行成熟步骤制备,其中通过加入碱(例如, 钙组分)连续或间歇地分几批(例如三批或多批)。 该方法可以将结合硫酸的量减少至约10-150ppm,并且还可以将钙含量降低至约10-110ppm。 纤维素酯是有用的。 作为光学膜(例如,偏振片用保护膜)。 版权所有(C)2006,JPO&NCIPI

    Method of preparing cellulose acetate solution, and preparation process of cellulose acetate film
    37.
    发明专利
    Method of preparing cellulose acetate solution, and preparation process of cellulose acetate film 有权
    乙酸纤维素溶液的制备方法及乙酸纤维素薄膜的制备方法

    公开(公告)号:JP2005060711A

    公开(公告)日:2005-03-10

    申请号:JP2004265801

    申请日:2004-09-13

    Abstract: PROBLEM TO BE SOLVED: To provide a cellulose acetate solution where cellulose acetate is dissolved stably in an organic solvent other than halogenated hydrocarbon. SOLUTION: The preparation process of the cellulose acetate solution comprises the steps of: swelling cellulose acetate having an average degree of acetylation of 58.0-62.5% in an organic solvent selected from 3-12C ethers, 4-12C ketones and 3-12C esters containing practically no halogenated hydrocarbon; cooling the swelled mixture to a temperature in the range of -100 to -10°C; heating the cooled mixture to a temperature in the range of 0 to 50°C; and dissolving the cellulose acetate in the organic solvent. COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 待解决的问题:提供醋酸纤维素稳定地溶解在卤代烃以外的有机溶剂中的醋酸纤维素溶液。 解决方案:醋酸纤维素溶液的制备方法包括以下步骤:在有机溶剂中溶解平均乙酰化度为58.0-62.5%的乙酸纤维素,所述有机溶剂选自3-12C醚,4-12C酮和3- 实际上不含卤代烃的12C酯; 将溶胀的混合物冷却至-100至-10℃范围内的温度; 将冷却的混合物加热至0至50℃的温度; 并将乙酸纤维素溶解在有机溶剂中。 版权所有(C)2005,JPO&NCIPI

    PRODUCTION OF CELLULOSE ACETATE SOLUTION

    公开(公告)号:JPH1045802A

    公开(公告)日:1998-02-17

    申请号:JP21667496

    申请日:1996-07-30

    Applicant: DAICEL CHEM

    Abstract: PROBLEM TO BE SOLVED: To enable the production of cellulose acetate solution useful for photographic materials, etc., by adopting a somewhat higher cooling temperature practicable by a relative simple treatment in a cooling dissolution method. SOLUTION: A mixture of (A) a cellulose acetate having 58.0-62.5% average acetyl content with (B) an organic solvent is cooled to a temperature (T) defined by formula I [when the average acetyl content (Dac) of the component A is 58.25-6.0%] or formula II (when the Dac is 60.0-62.5%) in a cooling step when dissolving the component A in the component B and providing the objective solution according to the step for cooling the mixture of the components A and B to

    PRODUCTION OF CELLULOSE ACETATE SOLUTION

    公开(公告)号:JPH1045801A

    公开(公告)日:1998-02-17

    申请号:JP21667396

    申请日:1996-07-30

    Applicant: DAICEL CHEM

    Abstract: PROBLEM TO BE SOLVED: To enable the production of cellulose acetate solution useful for photographic materials, etc., by adopting the highest possible cooling temperature in a cooling dissolution method. SOLUTION: A mixture of (A) a cellulose acetate having 58.25-62.5% average acetyl content with (B) an organic solvent is cooled to a temperature (T) defined by formula I [when the average acetyl content (Dac) of the component A is 58.25-60.0%] or formula II (when the Dac is 60.0-62.5%) in a cooling step when dissolving the component A in the component B and providing the objective solution according to the step for cooling the mixture of the components A and B to

    40.
    发明专利
    失效

    公开(公告)号:JPH05296988A

    公开(公告)日:1993-11-12

    申请号:JP10642692

    申请日:1992-04-24

    Applicant: DAICEL CHEM

    Abstract: PURPOSE:To excellently separate basic compounds of amines which can be hardly separated from each other by using a mobile phase containing anions containing a plurality of fluorine atoms. CONSTITUTION:The anion which contains a plurality of fluorine atoms is that containing two or more fluorine atoms in one molecule of anion, such as the phosphor hexafluoride ion, arsenic hexafluoride ion, etc. Any mobile phase that can dissolve an ion-pair reagent at a required concentration and does not give any adverse influence to a stationary phase, sample, and chromatography equipment or mobile phase composed mainly of a nonpolar solvent, such as hexane, etc., can be used as the mobile phase to which anions are added. Such mobile phase is suitable for the separation of a mixture containing molecules which can produce anions, because the phase largely changes the intensity of retention in the chromatography of anions, such as amines, or molecules which can produce anions. Moreover, since the mobile phase has a similar structure, the phase can be used for the separation of a hardly separable mixture, such as an optical isomer, etc., containing a polysaccharide derivative as a stationary phase.

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