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    Vinyl monomer polymerization inhibition using hindered hydroxylamines
    81.
    发明授权
    Vinyl monomer polymerization inhibition using hindered hydroxylamines 有权
    使用受阻羟胺的乙烯基单体聚合抑制

    公开(公告)号：US06342647B1

    公开(公告)日：2002-01-29

    申请号：US09391970

    申请日：1999-09-08

    申请人： Glenn L. Roof ,  Muslim D. Shahid

    发明人： Glenn L. Roof ,  Muslim D. Shahid

    IPC分类号： C07C720

    CPC分类号： C09K15/30 ,  C07B63/04 ,  C07C7/20 ,  C07C51/50 ,  C07C253/32 ,  C07C15/46 ,  C07C11/167 ,  C07C57/04 ,  C07C11/18 ,  C07C255/08

    摘要： It has been discovered that the polymerization of vinyl aromatic compounds, such as styrene, may be inhibited by the addition of a composition that contains a hindered hydroxylamine, and, optionally, a synergist together with the hindered hydroxylamine. In one embodiment of the invention, the hindered N,N-disubstituted hydroxylamine has the formula: [(R1R2R3)C]2N—OH where R1, R2, and R3 are independently selected from the group consisting of hydrogen, straight, branched or cyclic alkyl, aryl, aralkyl, and alkaryl moieties; where no more than two of R1, R2, and R3 on each C can be hydrogen at a time; where one or more of R1, R2, and R3 on one C may be joined to a R1, R2, and R3 on the other C to form a cyclic moiety selected from the group consisting of alkylene, and aralkylene moieties; where any two of the R1, R2, and R3 on any one C may be joined together to form a cycloalkyl; where any of the above definitions of R1, R2, and R3 may contain one or more heteroatoms selected from the group consisting of N, O and S; and where the total number of carbon atoms in the hindered N,N-disubstituted hydroxylamine ranges from 6 to 70. Optional synergists may include alkyl-substituted hydroxyarenes such as 2,5-di-tert-butylhydroquinone, and hydrogen transfer agents such as 1,2,3,4-tetrahydronaphthalene; and the like, and mixtures thereof.

    摘要翻译： 已经发现，乙烯基芳族化合物如苯乙烯的聚合可以通过加入含有受阻羟胺的组合物和任选的增效剂与受阻羟胺一起被抑制。 在本发明的一个实施方案中，受阻的N，N-二取代的羟胺具有下式：其中R 1，R 2和R 3独立地选自氢，直链，支链或环烷基，芳基，芳烷基和烷芳基部分 ; 其中每个C上不超过两个R 1，R 2和R 3可以一次为氢; 其中一个C上的R 1，R 2和R 3中的一个或多个可以在另一个C上连接到R 1，R 2和R 3，以形成选自亚烷基和亚芳基部分的环状部分; 其中任何一个C上的R 1，R 2和R 3中的任何两个可以连接在一起以形成环烷基; 其中R1，R2和R3的上述定义中的任何一个可以含有一个或多个选自N，O和S的杂原子; 并且其中受阻N，N-二取代羟胺中的总碳原子数范围为6至70.任选的增效剂可包括烷基取代的羟基芳烃如2,5-二叔丁基氢醌和氢转移剂如1 ，2,3,4-四氢化萘; 等，及其混合物。

    Process for producing acrylonitrile or methacrylonitrile
    82.
    发明授权
    Process for producing acrylonitrile or methacrylonitrile 失效
    制备丙烯腈或甲基丙烯腈的方法

    公开(公告)号：US06245931B1

    公开(公告)日：2001-06-12

    申请号：US08604323

    申请日：1996-02-21

    申请人： Kunitoshi Aoki ,  Satoru Komada

    发明人： Kunitoshi Aoki ,  Satoru Komada

    IPC分类号： C07C25324

    CPC分类号： C07C253/26 ,  Y02P20/52 ,  C07C255/08

    摘要： Disclosed is a process for producing acrylonitrile from propylene, or methacrylonitrile from isobutylene by ammoxidation using an improved catalyst composition comprising an oxide catalyst represented by the formula: MomBibFefNinQqAaEeOx, wherein Q is a mixture of chromium and indium, A is at least one element selected from potassium, rubidium and cesium, E is at least one element selected from manganese magnesium, zinc, cerium, sodium and phosphorus, and m is a number of from 10 to 14, b is a number of from 0.1 to 3, f is a number of from 0.1 to 3, n is a number of from 4 to 10, q is a number of from 0.1 to 2, a is a number of from 0.01 to 0.5, e is a number of from 0 to 3, and x is a number determined by the valence requirements of the other elements present, and a silica carrier having the oxide catalyst supported thereon, wherein the silica carrier is present in an amount of from 40 to 60% by weight, based on the total weight of the oxide catalyst and the silica carrier. With the oxide catalyst composition of the present invention, the desired acrylonitrile or methacrylonitrile can be produced in high yield.

    摘要翻译： 公开了一种由丙烯或异丁烯的甲基丙烯腈通过氨氧化制备丙烯腈的方法，使用改进的催化剂组合物，其包含由下式表示的氧化物催化剂：MomBibFefNinQqAaEex，其中Q是铬和铟的混合物，A是至少一种选自 钾，铷和铯，E是选自锰镁，锌，铈，钠和磷中的至少一种元素，m为10至14的数，b为0.1至3的数，f为数 为0.1〜3，n为4〜10的数，q为0.1〜2的数，a为0.01〜0.5的数，e为0〜3的数，x为 数量由存在的其它元素的化合价要求确定，并且其上负载有氧化物催化剂的二氧化硅载体，其中二氧化硅载体的存在量为基于氧化物催化剂总重量的40至60重量％ 和二氧化硅载体。 利用本发明的氧化物催化剂组合物，可以高产率制备所需的丙烯腈或甲基丙烯腈。

    Nucleation of Polyamides in the presence of hypophosphite
    83.
    发明授权
    Nucleation of Polyamides in the presence of hypophosphite 有权
    在次磷酸存在下聚酰胺的成核

    公开(公告)号：US06197855B1

    公开(公告)日：2001-03-06

    申请号：US09321328

    申请日：1999-05-27

    申请人： Bruce A. Lysek ,  Rickey W. Ables

    发明人： Bruce A. Lysek ,  Rickey W. Ables

    IPC分类号： C08L553

    CPC分类号： C07C253/26 ,  C07C253/34 ,  C07C255/08

    摘要： The present invention provides polyamide compositions comprising a polyamide, nylon 2,2, and a phosphorous-containing whitening agent having Formula I: Formula I: wherein R is hydrogen, an alkyl group with 1 to 6 carbons, a cycloalkyl group with 5 to 6 carbons, or a phenyl or methylphenyl aromatic group, and M is hydrogen or a metal. In a preferred embodiment, the polyamide is nylon 6,6 (polyhexamethylene adipamide) and the phosphorous-containing whitening agent is a hypophosphorous acid or a metal hypophosphite. Sodium hypophosphite is especially preferred. The polyamide compositions of the present invention have improved molding cycle times, and are tough, white and color-stable.

    摘要翻译： 本发明提供了包含聚酰胺，尼龙2,2和具有式I的含磷增白剂的聚酰胺组合物：式I：其中R是氢，具有1至6个碳的烷基，具有5至6个碳原子的环烷基 碳或苯基或甲基苯基芳基，M是氢或金属。 在优选的实施方案中，聚酰胺是尼龙6,6（聚己二酰己二胺），含磷增白剂是次磷酸或次磷酸金属。 次磷酸钠是特别优选的。 本发明的聚酰胺组合物具有改进的成型周期时间，并且是坚韧的，白色的和颜色稳定的。

    Use of substituted phenols to inhibit polymer formation during the manufacture of acrylonitrile
    84.
    发明授权
    Use of substituted phenols to inhibit polymer formation during the manufacture of acrylonitrile 失效
    在制备丙烯腈期间使用取代酚抑制聚合物形成

    公开(公告)号：US6025515A

    公开(公告)日：2000-02-15

    申请号：US755891

    申请日：1996-09-23

    申请人： Muslim D. Shahid

    发明人： Muslim D. Shahid

    IPC分类号： C07C253/32 ,  C07C255/08 ,  C07C255/00

    CPC分类号： C07C253/32 ,  C07C255/08

    摘要： The present invention provides substituted phenols which are effective to inhibit polymer formation during the manufacture of acrylonitrile. Preferred substituted phenols are (a) hindered phenols, nonhindered phenols, and partially hindered phenols, or (b) combinations of hindered phenols with nonhindered or partially hindered phenols. A most preferred substituted phenol is p-nitrosophenol. In a preferred embodiment, the substituted phenols (with the exception of p-nitrosophenol) are combined with hydrogen transfer agents.

    摘要翻译： 本发明提供了在制造丙烯腈期间有效抑制聚合物形成的取代酚。 优选的取代酚是（a）受阻酚，非阻碍酚和部分受阻酚，或（b）受阻酚与非阻碍或部分受阻酚的组合。 最优选的取代苯酚是对亚硝基苯酚。 在优选的实施方案中，取代的酚（除对亚硝基苯酚除外）与氢转移剂组合。

    Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylonitrile
    85.
    发明授权
    Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylonitrile 失效
    可聚合叔铵盐和丙烯腈的季铵加合物

    公开(公告)号：US4310472A

    公开(公告)日：1982-01-12

    申请号：US133047

    申请日：1980-03-24

    申请人： Rudolf S. Buriks ,  Allen R. Fauke ,  David W. Griffiths

    发明人： Rudolf S. Buriks ,  Allen R. Fauke ,  David W. Griffiths

    IPC分类号： C02F1/54 ,  C07C255/24 ,  C08F20/34 ,  C08F20/60 ,  C07C121/16

    CPC分类号： C07C255/08 ,  C02F1/54 ,  C08F20/34 ,  C08F20/60

    摘要： This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also relates to the use of said polymers and copolymers, particularly in the clarification of turbid waters by flocculation or flotation of oil and/or suspended solids. In the preferred embodiment, the quaternary adduct monomer is: ##STR1## where X is an anion, preferably halide such as chloride or carboxylate such as acetate; and polymers and copolymers containing units thereof.

    摘要翻译： 本发明涉及可聚合叔胺与由丙烯酰胺和丙烯腈表示的丙烯酸化合物的盐的加合物; 含有所述加合物的聚合物和共聚物及其制备方法。 本发明还涉及所述聚合物和共聚物的用途，特别是在通过油和/或悬浮固体的絮凝或浮选来澄清混浊水中。 在优选的实施方案中，季加合物单体是：其中X是阴离子，优选卤化物如氯化物或羧酸盐如乙酸盐; 和含有其单元的聚合物和共聚物。

    Disposal of waste materials from unsaturated nitrile
    89.
    发明授权
    Disposal of waste materials from unsaturated nitrile 失效
    处理不饱和腈废料

    公开(公告)号：US3895050A

    公开(公告)日：1975-07-15

    申请号：US41407673

    申请日：1973-11-08

    申请人： BADGER CO

    发明人： SHEELY HAROLD R

    IPC分类号： C07C121/02

    CPC分类号： C07C255/00 ,  C07C253/34 ,  C07C255/08 ,  C07C255/03

    摘要： A method of recovering and disposing of waste materials from a plant for manufacturing unsaturated aliphatic nitriles or aromatic nitriles whereby waste water, unreacted ammonia and byproducts such as HCN and acetonitrile are not condensed but remain with the absorber off-gas for ultimate disposal by incineration. The method employs a hydrocarbon solvent to adiabatically quench the reactor effluent and, after removal of polymer by-products, the partially quenched effluent is passed to a hot absorber column where the nitrile product but no ammonia and only some of the HCN are absorbed by the hydrocarbon solvent. The nitrile-solvent mixture is distilled to separately recover the solvent and nitrile product. The solvent is recycled. The hot absorber off-gases are cooled to recover water and then incinerated, with ammonia, HCN, acetonitrile and some vaporized solvent furnishing the necessary fuel values. In a preferred embodiment, solvent in the absorber overhead vapors is recovered by scrubbing with a high boiling oil.

    摘要翻译： 从用于制造不饱和脂族腈或芳族腈的植物中回收和处理废料的方法，其中废水，未反应的氨和副产物如HCN和乙腈不会冷凝，而是与吸收塔尾气保持最终处置，以最终处置 焚化。 该方法采用烃溶剂绝热淬灭反应器流出物，在除去聚合物副产物后，将部分淬灭的流出物通入热吸收塔，其中腈产物但不含氨，只有一些HCN被吸收 烃溶剂。 将腈 - 溶剂混合物蒸馏，分别回收溶剂和腈产物。 溶剂回收利用。 将热吸收器废气冷却回收水，然后用氨，HCN，乙腈和一些汽化溶剂焚烧，提供必要的燃料值。 在优选的实施方案中，吸收塔顶蒸气中的溶剂通过用高沸点油洗涤来回收。