2-amino-3,5-di-(halomethyl)-pyrazines and their preparation
    1.
    发明授权
    2-amino-3,5-di-(halomethyl)-pyrazines and their preparation 失效
    2-氨基-3,5-二(卤代甲基) - 吡嗪及其制备方法

    公开(公告)号:US4692527A

    公开(公告)日:1987-09-08

    申请号:US776460

    申请日:1985-09-16

    IPC分类号: C07D241/20 C07D403/04

    摘要: 2-Amino-3,5-di-(halomethyl)-pyrazines of the general formula I ##STR1## where X is either chlorine or bromine, m and n may each be 0, 1, 2 or 3 and R.sup.1 and R.sup.2 are each hydrogen or a protective group or may furthermore be bonded to one another, in particular those compounds of the formula I in which m is 1 and n is 2 and/or R.sup.1 and R.sup.2 together form a phthaloyl radical, are useful intermediates for the pteridine building block of folic acid or folic acid analogs.They are obtained by a method in which a 2-amino-3,5-dimethylpyrazine of the general formula II ##STR2## is treated with a chlorinating or brominating agent and, where R.sup.1 and/or R.sup.2 are protective groups, these are, if desired, eliminated when the chlorination or bromination is complete.

    摘要翻译: 其中X是氯或溴,m和n的通式I(I)的2-氨基-3,5-二(卤代甲基) - 吡嗪可以各自为0,1,2或3,R1和 R2各自为氢或保护基,或者还可以彼此键合,特别是其中m为1且n为2的式I化合物和/或R 1和R 2一起形成邻苯二甲酰基的有用的中间体 叶酸或叶酸类似物的蝶啶结构单元。 它们是通过一种方法获得的,其中通式II的2-氨基-3,5-二甲基吡嗪用氯化或溴化剂处理,其中R 1和/或R 2是保护基,这些 如果需要,当氯化或溴化完成时,它们被消除。

    Method for the preparation of 1,3-disubstituted
4,5-cis-dicarboxy-2-imidazolidones
    3.
    发明授权
    Method for the preparation of 1,3-disubstituted 4,5-cis-dicarboxy-2-imidazolidones 失效
    制备1,3-二取代的4,5-顺 - 二羧基-2-咪唑啉酮的方法

    公开(公告)号:US4659837A

    公开(公告)日:1987-04-21

    申请号:US450286

    申请日:1982-12-16

    IPC分类号: C07D233/32

    CPC分类号: C07D233/32

    摘要: A process for the preparation of 1,3-disubstituted 4,5-cis-dicarboxy-2-imidazolidones useful as intermediates in the preparation of Vitamin H (biotin), said intermediates have the general formula ##STR1## in which R is an aliphatic hydrocarbon radical having 1 to 8 carbon atoms, an aralkyl radical or an aromatic hydrocarbon radical, preferably an allyl radical or a benzyl radical, comprising reacting a defined diaminosuccinic acid with phosgene in the presence of an alkali metal hydroxide.

    摘要翻译: 用作制备维生素H(生物素)的中间体的1,3-二取代的4,5-顺 - 二羧基-2-咪唑烷酮的制备方法,所述中间体具有通式“IMAGE”,其中R是脂族 包括具有1-8个碳原子的烃基,芳烷基或芳族烃基,优选烯丙基或苄基,包括在碱金属氢氧化物存在下使限定的二氨基琥珀酸与光气反应。

    Curable polyester molding materials
    4.
    发明授权
    Curable polyester molding materials 失效
    可固化聚酯成型材料

    公开(公告)号:US4777195A

    公开(公告)日:1988-10-11

    申请号:US133734

    申请日:1987-12-16

    CPC分类号: C08K5/175

    摘要: Curable polyester molding materials contain a mixture ofA. an ethylenically unsaturated polyester or a vinyl ester possessing an unsaturated terminal group,B. copolymerizable monomers,C. fibrous reinforcing agents,D. powdered fillers,E. organic free radical initiators,F. a viscosity depressant andG. conventional additives.The viscosity depressant is a tertiary or secondary amine which carries a long-chain alkyl or acyl group and a carboxyl group.

    摘要翻译: 可固化聚酯成型材料包含A.具有不饱和端基的乙烯基不饱和聚酯或乙烯基酯的混合物,B.可共聚单体,C.纤维增强剂,D.粉末状填料,E.有机自由基引发剂,F.a 粘度抑制剂和G.常规添加剂。 降粘剂是带有长链烷基或酰基和羧基的叔胺或仲胺。

    Production of impact-resistant styrene polymers

    公开(公告)号:US4433099A

    公开(公告)日:1984-02-21

    申请号:US252628

    申请日:1981-04-09

    IPC分类号: C08F279/00 C08F279/02

    CPC分类号: C08F279/02

    摘要: Impact-resistant modified styrene polymers having the characteristics: molecular weight M.sub.v 150,000 to 170,000; gel content exceeding 22%; degree of swelling of 11.5 to 13.5 and a mean gel particle diameter of 1.7 to 4.5 microns are produced by continuously polymerizing a styrene solution of polybutadiene, possibly in the presence of diluents, by means of a cascade consisting of at least three continuous stirred tank reactors, at rising temperatures and in the presence of organic peroxide initiators. The process steps are carried out as follows:(a) in a first continuous stirred tank reactor, a continuously introduced solution of styrene containing from 8 to 10.5% by weight (referred to the amount of input styrene) of polybutadiene rubber with more than 85% of a cis-1,4-structure, is polymerized in the presence of 1 to 7 m moles of an initiator per kilogram of styrene, where the initiator concentration is based upon a peroxide group or an equivalent amount of such with several peroxide groups having a half-life time exceeding 5 and less than 40 hours at 100.degree. C. (measured in benzene), for a residence time of 0.8 to 1.6 hours with shearing at temperatures of about 110.degree. to 140.degree. C., to a solid content of about 28 to 42% by weight;(b) polymerization proceeds after transfer into one, two or three further agitation vessels at temperatures of about 130.degree. to 160.degree. C., for a total residence time of about 1.0 to 1.8 hours, to a solid content of about 60 to 73% by weight;(c) polymerization proceeds after transfer into a further continuous stirred tank reactor at a temperature of about 150.degree. to 175.degree. C. and a dwell time of about 1.2 to 2.5 hours up to a solid content exceeding 75% by weight and a residual initiator content less than 1% by weight of the original amount; and(d) the substance is rid of volatile components at temperatures less than 260.degree. C. under reduced pressure.

    Alkanolamine salts of cyclic amide acids and their use as metal
corrosion inhibitors in aqueous systems
    6.
    发明授权
    Alkanolamine salts of cyclic amide acids and their use as metal corrosion inhibitors in aqueous systems 失效
    环状酰胺酸的链烷醇胺盐及其在水性体系中作为金属腐蚀抑制剂的用途

    公开(公告)号:US4473491A

    公开(公告)日:1984-09-25

    申请号:US387743

    申请日:1982-06-11

    IPC分类号: C10M169/00 C23F11/14 C09K3/00

    CPC分类号: C07C255/00 C23F11/14

    摘要: Alkanolamine salts of amide acids having the formula: ##STR1## in which the circle represents a single nucleous aromatic ring or a monocyclic or bicyclic aliphatic ring system in each case with 5 or 6 carbon atoms per ring in which R.sup.1 represents an isoalkyl radical with the longest chain of 6 to 8 carbon atoms and a total of 8 to 12 carbon atoms; R.sup.2 represents a radical alkylene-X wherein the alkylene chain is a branched or straight chain and contains 1 to 4 carbon atoms; X represents OR.sup.3, O(C.sub.2 H.sub.4 O).sub.n -R.sup.3, O(C.sub.3 H.sub.6 O).sub.n -R.sup.3, NR.sup.3 R.sup.3, CN, CONH.sub.2, and COOR.sup.3 ; R.sup.3 represents hydrogen or C.sub.1 to C.sub.4 alkyl; n is an integer of 1 to 4; and wherein the carboxyl and carbonamide groups in said formula are bonded to non-olefinic carbon atoms and arranged in adjacent positions. The use of these salts as corrosion inhibitors in aqueous systems is also disclosed.

    摘要翻译: 具有下式的酰胺酸的烷醇胺盐:其中圆代表单个核芳香环或单环或双环脂族环系,每个环中具有5或6个碳原子,其中R 1表示异烷基, 6至8个碳原子的最长链和总共8至12个碳原子; R2表示其中亚烷基链是支链或直链且含有1至4个碳原子的自由基亚烷基-X; X表示OR 3,O(C 2 H 4 O)n -R 3,O(C 3 H 6 O)n -R 3,NR 3 R 3,CN,CONH 2和COOR 3; R3代表氢或C1至C4烷基; n为1〜4的整数, 并且其中所述式中的羧基和碳酰胺基团与非烯属碳原子键合并排列在相邻位置。 还公开了在水性体系中使用这些盐作为腐蚀抑制剂。

    Benzoin photoinitiator containing a quaternary ammonium group in photo
curable composition and process
    7.
    发明授权
    Benzoin photoinitiator containing a quaternary ammonium group in photo curable composition and process 失效
    在光固化组合物和方法中含有季铵基团的苯偶姻光引发剂

    公开(公告)号:US4257859A

    公开(公告)日:1981-03-24

    申请号:US57084

    申请日:1979-07-12

    IPC分类号: C07D295/104 C08F2/50 C08J3/28

    摘要: Quaternary ammonium compounds of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is H, halogen, phenyl, alkyl, alkoxy or alkylthio,R.sup.3 is H or alkyl, hydroxyalkyl, cycloalkyl or aralkyl,R.sup.4 and R.sup.5 are identical or different and each is alkyl, phenyl, cycloalkyl or aralkyl orR.sup.4 and R.sup.5 together are a --(CH.sub.2).sub.4 -- bridge, a --(CH.sub.2).sub.5 -- bridge or a --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 -- bridge,R.sup.6 is alkyl andX.sup..crclbar. is Cl.sup..crclbar., Br.sup..crclbar., I.sup..crclbar., CH.sub.3 SO.sub.4.sup..crclbar. or C.sub.2 H.sub.5 SO.sub.4.sup..crclbar., a process for their preparation from Mannich bases of the formula ##STR2## and alkylating agents, and the use of these quaternary ammonium compounds as initiators for the photopolymerization of polymerizable mixtures containing olefinically unsaturated compounds, especially for the preparation of aqueous polymer dispersions or polymer solutions.

    摘要翻译: 其中R 1和R 2相同或不同并且各自为H,卤素,苯基,烷基,烷氧基或烷硫基,R 3为H或烷基,羟烷基,环烷基或芳烷基,R 4和R 5为相同或 不同且各自为烷基,苯基,环烷基或芳烷基或R4和R5一起为 - (CH2)4-桥, - (CH2)5-桥或 - (CH2)2-O-(CH2)2-桥 ,R6是烷基,X( - )是Cl( - ),Br( - ),I( - ),CH 3 SO 4( - )或C 2 H 5 SO 4( - ),它们由式“IMAGE”的曼尼希碱 烷基化剂,以及这些季铵化合物作为用于光聚合含有烯属不饱和化合物的可聚合混合物的引发剂的用途,特别是用于制备聚合物水分散体或聚合物溶液。