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    Process for producing alkyl nitrite
    53.
    发明申请
    Process for producing alkyl nitrite 有权
    亚硝酸烷基酯的制备方法

    公开(公告)号：US20030176724A1

    公开(公告)日：2003-09-18

    申请号：US10388302

    申请日：2003-03-13

    Applicant: Ube Industries, Ltd.

    Inventor： Ryoji Sugise ,  Shuji Tanaka ,  Hirofumi Ii ,  Kazuaki Mii

    IPC: C07C23/04

    CPC classification number: C07C201/04 ,  C07C203/00

    Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.

    Abstract translation: 通过在反应器2中使一氧化氮气体与烷基醇和硝酸的水溶液接触，可以高效率地生产亚硝酸烷基酯，该水溶液可以是在亚硝酸烷基酯制备方法中产生的液体馏分，其中 在反应塔1中使烷基醇与一氧化氮和氧气反应。

    Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites
    54.
    发明授权
    Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites 失效
    制备C1-C4烷基亚硝酸盐的方法

    公开(公告)号：US5649322A

    公开(公告)日：1997-07-15

    申请号：US571625

    申请日：1995-12-11

    Applicant: Heinz Landscheidt ,  Paul Wagner ,  Zoltan Kricsfalussy ,  Alexander Klausener

    Inventor： Heinz Landscheidt ,  Paul Wagner ,  Zoltan Kricsfalussy ,  Alexander Klausener

    IPC: C07C201/04 ,  C07C203/00 ,  C07C203/02

    CPC classification number: C07C201/04

    Abstract: C.sub.1 -C.sub.4 -Alkyl nitrites can be prepared by reaction of C.sub.1 -C.sub.4 -alkanols with nitrogen oxides with the participation of oxygen in a reactor designed as a scrubber column, nitrogen oxides having a proportion of more than 50% of NO of the total amount of gram atoms of N of the nitrogen oxides, oxygen and optionally inert gas being fed into the lower part of the reactor. 5 to 60% of the total amount of C.sub.1 -C.sub.4 -alkanol used is likewise fed into the lower part of the reactor in vaporous or atomized form, while the remaining C.sub.1 -C.sub.4 -alkanol is delivered to the column head.

    Abstract translation: C1-C4烷基亚硝酸盐可以通过在设计为洗涤塔的反应器中将C1-C4-链烷醇与氮氧化物反应而制备，氧化反应设计为总量超过NO的50％ 的氮原子的氮原子的克原子，氧和任选的惰性气体被供给到反应器的下部。 使用的C 1 -C 4烷醇的总量的5-60％同样以蒸气或雾化的形式进料到反应器的下部，而剩余的C1-C4-链烷醇被输送到塔头。

    Process for removal of impurities in alkyl nitrite formation
    55.
    发明授权
    Process for removal of impurities in alkyl nitrite formation 失效
    去除亚硝酸烷基酯形成中的杂质的方法

    公开(公告)号：US4879401A

    公开(公告)日：1989-11-07

    申请号：US102370

    申请日：1987-09-29

    Applicant: Arthur R. Doumaux, Jr. ,  James R. Nelson

    Inventor： Arthur R. Doumaux, Jr. ,  James R. Nelson

    IPC: C07C201/16 ,  C07C67/00 ,  C07C201/00 ,  C07C201/04 ,  C07C203/00 ,  C07C203/02 ,  C07C203/04

    CPC classification number: C07C201/04

    Abstract: A process is provided for removing impurities from the gaseous product of an alkyl nitrite production zone by contacting a portion of it with lower alcohol and oxygen to convert substantially all of the nitric oxide in that portion of the gaseous product stream to alkyl nitrite, the oxygen being present in an amount such that the mole ratio of nitric oxide to oxygen is in the range of about 4:1 to about 2:1 and the lower alcohol being present in the reaction zone such that the mole ratio of nitric oxide to lower alcohol is about 1:1 or less. A recovery stream, comprising alkyl nitrite substantially free of nitric oxide, is withdrawn from the reaction zone and at least a portion of the alkyl produced in the reaction zone is removed. A least a portion of the balance of the recovery stream from which the alkyl nitrite has been removed is purged, thereby removing impurities from the process.

    Abstract translation: 提供了一种通过使其一部分与低级醇和氧接触而从亚硝酸烷基酯生产区的气态产物中除去杂质的方法，以将该部分气态产物流中的所有一氧化氮转化为亚硝酸烷基酯，氧气 存在的量使得一氧化氮与氧的摩尔比在约4:1至约2:1的范围内，低级醇存在于反应区中，使得一氧化氮与低级醇的摩尔比 约为1：1或更少。 包含基本上不含一氧化氮的亚硝酸烷基酯的回收流从反应区中排出，并且除去反应区中产生的烷基的至少一部分。 将亚硝酸烷基酯从其中除去的回收料流的余量的至少一部分被清除，从而从该方法中除去杂质。

    Process of making films, fibers or other shaped articles consisting of, or containing, polyhydroxy polymers
    56.
    发明授权
    Process of making films, fibers or other shaped articles consisting of, or containing, polyhydroxy polymers 失效
    制造由多羟基聚合物组成或含有多羟基聚合物的薄膜，纤维或其它成型制品的方法

    公开(公告)号：US4419316A

    公开(公告)日：1983-12-06

    申请号：US201806

    申请日：1980-10-29

    Applicant: Richard G. Schweiger

    Inventor： Richard G. Schweiger

    IPC: C07C203/00 ,  C07C203/04 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/36 ,  C08F8/42 ,  D01F11/02 ,  C08L1/16 ,  C08L5/00 ,  D01F11/04

    CPC classification number: C07C201/02 ,  C07C201/04 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/44

    Abstract: A process of preparing film, fibers and other shaped articles by nitrosating a polyhydroxy polymer in a reaction medium containing a solubilizing agent for the resulting polyhydroxy polymer nitrite ester and a suitable proton acceptor, bringing the reaction mixture into the desired shape and regenerating and separating the polyhydroxy polymer by contact with a protic solvent in the presence of an acid catalyst. The polyhydroxy polymer may be a polyvinyl alcohol, cellulose or other polysaccharide, and mixtures thereof. Also dissolved in the reaction medium may be an organic solvent soluble polymer substantially lacking hydroxyl groups. If mixtures of polyhydroxy polymers or of polyhydroxy polymers lacking hydroxyl groups and organic solvent soluble polymers are employed the resulting films, fibers or other shaped articles consist of homogeneous and intimate mixtures of all the polymers originally present in solution. Solutions containing polyhydroxy polymer nitrite ester or a mixture of polyhydroxy polymer nitrite ester and organic solvent soluble polymer lacking hydroxyl groups in an anhydrous medium containing a highly polar aprotic solvent or a weak tertiary amine base or both are disclosed.

    Abstract translation: 通过在含有所得多羟基聚合物亚硝酸酯的增溶剂和合适的质子受体的反应介质中亚硝化多羟基聚合物来制备膜，纤维和其它成形制品的方法，使反应混合物成为所需形状，再生和分离 多羟基聚合物与质子溶剂在酸催化剂存在下接触。 多羟基聚合物可以是聚乙烯醇，纤维素或其它多糖，以及它们的混合物。 也溶解在反应介质中的可以是基本上不含羟基的有机溶剂可溶性聚合物。 如果使用多羟基聚合物或缺乏羟基和有机溶剂可溶性聚合物的多羟基聚合物的混合物，则所得到的膜，纤维或其它成型制品由溶液中最初存在的所有聚合物的均匀和紧密的混合物组成。 公开了含有多羟基聚合物亚硝酸酯或多羟基聚合物亚硝酸酯和在含有高极性非质子溶剂或弱叔胺碱的两者的无水介质中缺少羟基的有机溶剂可溶性聚合物的混合物的溶液。

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