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101 条记录 (耗时 0.014 秒)

    Process for producing a regenerated hollow cellulosic fiber
    31.
    发明授权
    Process for producing a regenerated hollow cellulosic fiber 失效
    生产再生中空纤维素纤维的方法

    公开(公告)号：US4086418A

    公开(公告)日：1978-04-25

    申请号：US662134

    申请日：1976-02-27

    申请人： Albin Frank Turbak ,  Richard Benjamin Hammer ,  Norman A. Portnoy ,  Arthur C. West

    发明人： Albin Frank Turbak ,  Richard Benjamin Hammer ,  Norman A. Portnoy ,  Arthur C. West

    IPC分类号： C08B5/00 ,  C08B16/00 ,  D01F2/20

    CPC分类号： B01D71/10 ,  B01D69/08 ,  C08B16/00 ,  C08B5/00

    摘要： Hollow cellulosic fibers are produced by nitrosating and dissolving a cellulosic material in an aprotic solvent selected from the group consisting of a dialkylacylamide and dimethylsulfoxide and regenerating the dissolved cellulose by contacting the cellulose solution with a regenerant. The regenerant is n-octanol where the solvent is a dialkylacylamide and n-hexanol where the solvent is dimethylsulfoxide. The fibers are hollow as regenerated and require no special spinnerette designs nor special spinning conditions.

    摘要翻译： 中空纤维素纤维通过将纤维素材料亚硝化并溶解在选自二烷基酰胺和二甲基亚砜的非质子溶剂中并通过使纤维素溶液与再生剂接触来再生溶解的纤维素来生产。 再生剂是正辛醇，其中溶剂是二烷基酰胺和正己醇，其中溶剂是二甲基亚砜。 纤维是中空的再生，不需要特殊的喷丝板设计和特殊的纺丝条件。

    Process for producing regenerated cellulosic product
    32.
    发明授权
    Process for producing regenerated cellulosic product 失效
    生产再生纤维素产品的方法

    公开(公告)号：US4044090A

    公开(公告)日：1977-08-23

    申请号：US594325

    申请日：1975-07-09

    申请人： Norman A. Portnoy

    发明人： Norman A. Portnoy

    IPC分类号： C08B5/00 ,  C08B16/00 ,  D01F2/28

    CPC分类号： C08B16/00 ,  C08B5/00

    摘要： A regenerated cellulosic product is produced by nitrosating and dissolving a cellulosic material in a solution comprising a dialkylacylamide solvent and adding from 2 to 25% by weight, based on the weight of the solution, of a tertiary amine to form a soluble cellulose nitrite ester, contacting the cellulose ester with a coagulant therefore, stretching the coagulated cellulose ester prior to complete regeneration thereof and then completing the regeneration of the cellulose to produce a regenerated cellulosic product.

    摘要翻译： 通过将纤维素材料亚硝化并溶解在包含二烷基酰胺溶剂的溶液中并基于溶液的重量加入2至25重量％的叔胺以形成可溶性亚硝酸纤维素酯来生产再生纤维素产品， 使纤维素酯与凝结剂接触，从而在完全再生之前拉伸凝固的纤维素酯，然后完成纤维素的再生以产生再生纤维素产品。

    Carbohydrate-boron alkoxide compounds
    33.
    发明授权
    Carbohydrate-boron alkoxide compounds 失效
    碳水化合物 - 硼醇盐化合物

    公开(公告)号：US3891621A

    公开(公告)日：1975-06-24

    申请号：US40640873

    申请日：1973-10-15

    申请人： US AGRICULTURE

    发明人： ARTHUR JR JETT C ,  BAINS MALKAIT S

    IPC分类号： C07H15/04 ,  C07H23/00 ,  C08B5/00 ,  C08B13/00 ,  C08B15/05 ,  D06M13/503 ,  C07C47/18

    CPC分类号： C07H15/04 ,  C07H23/00 ,  C08B5/00 ,  C08B13/00 ,  C08B15/05 ,  D06M13/503

    摘要： This invention relates to a method for preparing carbohydrateboron alkoxide compounds. Under anhydrous conditions, stable compounds of methyl- Alpha -D-glucoside, methyl- Alpha mannoside, sucrose, cellobiose, methyl cellulose, and cellulose and boron alkoxides, such as boron ethoxide, boron prepoxide, and boron isopropoxide, were prepared in neat boron alkoxide, the parent alcohol, benzene, pyridine, and/or ethylenediamine. The method of this invention has as its objective increasing the reactivity of carbohydrates, as their molecular weights increase, with boron alkoxides by treatment in solutions of strong bases, such as pyridine and ethylenediamine. Formation of carbohydrateboron alkoxide compounds modifies the rate of oxidation of carbohydrates and is related to preparing flame-resistant products.

    Highly water soluble dextrin phosphate
    35.
    发明授权
    Highly water soluble dextrin phosphate 失效
    高水溶性磷酸氢盐

    公开(公告)号：US3642774A

    公开(公告)日：1972-02-15

    申请号：US3642774D

    申请日：1969-05-21

    申请人： BLATTMANN & CO

    发明人： SCHOBINGER ULRICH ,  CHRISTOFFEL CLA ,  BERNER KURT

    IPC分类号： C08B5/00 ,  C08B31/06 ,  C08B37/00 ,  C08K5/15 ,  C08K5/1525 ,  D06M13/292 ,  D06M15/11 ,  D21H17/17 ,  C08B19/04

    CPC分类号： D21H17/17 ,  C08B5/00 ,  C08B31/066 ,  C08B37/00 ,  C08K5/15 ,  C08K5/1525 ,  D06M13/292 ,  D06M15/11 ,  C08L3/00

    摘要： FINELY DIVIDED STARCH PRODUCTS CLASSIFIED AS DEXTRIN PHOSPHATE, HAVING EXTREMELY LIGHT COLOR, HIGH COLD WATER SOLUBILITY AND LOW AND RELATIVELY STABEL VISCOSITY IN AQUEOUS SOLUTION ARE PROVIDED BY HEATING UNDER LOW VACUUM TO 80-90*C., FOR 2 TO 4 HOURS, A FINELY DIVIDED MIXTURE OF POWDERED STARCH AND AN AQUEOUS SOLUTION OF ALKALI METAL PHOSPHATE AND PHOSPHORIC ACID HAVING A PH BETWEEN 2 AND 5, SUCH AS A PH OF ABOUT 3; THEN HEATING THE MIXTURE UNDER HIGH VACUUM TO AND AT A TEMPERATURE BETWEEN 125* AND 140*C. FOR 1 TO 3 HOURS TO COMPLETE THE DEHYDRATION AND REACTION OF THE MATERIAL; AND THEN COOLING IT WITH EXCLUSION OF OXYGEN, AS UNDER HIGH VACUUM. A WATER SOLUBLE ALDEHYDE REACTED IN THE MIXTURE FURTHER ENHANCES THE STABILITY OF THE PRODUCT. THE DEXTRIN PHOSPHATE CONTAINS 0.3 TO 3% OF MOLECULARLY BOUND PHOSPHORUS. IT IS ESPECIALLY USEFUL IN MIXTURES WITH HIGH MOLECULAR STARCH PRODUCTS AND/OR WATER SOLUBLE SYNTHETIC POLYMERS FOR SIZING TEXTILES, AND IN MIXTURES WITH KETENE DIMERS FOR SURFACE SIZING PAPER TO INHIBIT INK PENETRATION.