Process and device for recovering amines and use of residues obtainable
thereby
    3.
    发明授权
    Process and device for recovering amines and use of residues obtainable thereby 失效
    用于回收胺的方法和装置以及由此获得的残留物的使用

    公开(公告)号:US5808159A

    公开(公告)日:1998-09-15

    申请号:US663198

    申请日:1996-06-10

    申请人: Eberhard Giebeler

    发明人: Eberhard Giebeler

    CPC分类号: C07C209/84 C07C209/86

    摘要: The invention relates to a process for recovering amines from acid amine salt solutions by the addition of bases and evaporating the solution at a pH of 11 to 13 in a kneading drier until a useful solid is obtained as the distillation residue and a device for separating sludges and suspensions into a solid and a plurality of liquid fractions separated according to their boiling point. The low-water-content amine phase separated out by distillation is dehydrated with calcium oxide or potassium hydroxide and then separated into pure amine fractions by rectification. The process described makes it possible to utilise all the secondary flows and completely recycle the amines and the absorption medium (sulphuric acid). The flows for the recycling process are amine-charged washing acids from absorbers obtained from the cleaning of amine-containing exhaust gases, produced for instance in the cold box process for hardening core sand in foundries.

    摘要翻译: PCT No.PCT / DE95 / 00595 Sec。 371日期1996年6月10日 102(e)日期1996年6月10日PCT提交1995年5月3日PCT公布。 出版物WO95 / 31430 日期:1995年11月23日本发明涉及一种通过加入碱从酸胺盐溶液中回收胺的方法,并在混合干燥器中将pH为11至13的溶液蒸发,直到获得有用的固体为蒸馏残渣, 用于将淤泥和悬浮液分离成固体的装置和根据其沸点分离的多个液体馏分。 通过蒸馏分离的低水含量胺相用氧化钙或氢氧化钾脱水,然后通过精馏分离成纯胺馏分。 所述方法使得可以利用所有二次流并完全循环胺和吸收介质(硫酸)。 用于再循环过程的流程是来自通过清洗含胺废气得到的吸收剂的胺充电洗涤酸,例如在用于硬化铸造砂芯的冷箱方法中制备。

    Preservatives for cellulose containing products
    4.
    发明授权
    Preservatives for cellulose containing products 失效
    含有纤维素的产品防腐剂

    公开(公告)号:US4970201A

    公开(公告)日:1990-11-13

    申请号:US391469

    申请日:1989-08-09

    摘要: A biocidal preservative for cellulose-containing products containing a biocidally effective amount of a polymeric quaternary ammonium borate obtained by simultaneous reaction of (A) at least one member of the group consisting of boric acid and salts and esters thereof and (B) an amine of the formula ##STR1## and (C) ethylene oxide or propylene oxide wherein R.sub.1 is alkyl or alkenyl of 8 to 22 carbon atoms and R.sub.2 is hydrogen, alkyl of 1 to 22 carbon atoms or --CH.sub.2 CH.sub.2 NH.sub.2 or R.sub.1 is alkyl of 1 to 4 carbon atoms and R.sub.2 is --(CH.sub.2 CH.sub.2 O).sub.x --H or --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, R.sub.3 is selected from the group consisting of hydrogen, --(CH.sub.2 CH.sub.2 O).sub.x --H, (CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H and --CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2, R.sub.4 and R.sub.6 are individually selected from the group consisting of alkyl of 1 to 4 carbon atoms, --(CH.sub.2 CH.sub.2 O).sub.x --H and --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, and R.sub.5 and R.sub.7 are individually --(CH.sub.2 CH.sub.2 O).sub.x --H and --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, A is selected from the group consisting of --(CH.sub.2).sub.n, --(CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2).sub.n -- and --(CH.sub.2 CH.sub.2 --NH--CH.sub.2 CH.sub.2).sub.n --x is an integer from 1 to 55 and n is an integer of 1 to 20, the molar ratio of A:B:C being 1:2 to 20:0.6 to 1.5.

    摘要翻译: 含有生物有效量的聚合季铵硼酸盐的含有杀生物剂的产品的杀生物防腐剂,其通过(A)由硼酸及其盐和酯组成的组中的至少一个成员同时反应而获得,和(B) 式(IMA)和(C)环氧乙烷或环氧丙烷,其中R1是8-22个碳原子的烷基或烯基,R2是氢,1-22个碳原子的烷基或-CH2CH2NH2或R1是1到4个碳原子的烷基 原子,R 2是 - (CH 2 CH 2 OCH 2)x H或 - (CH 2 CH 2 CH 2 O)x H,R 3选自氢, - (CH 2 CH 2 O)x H,(CH 2 CH 2 CH 2 O)x H和-CH 2 CH 2 CH 2 NH 2,R 4和R 6各自选自 具有1至4个碳原子的烷基, - (CH 2 CH 2 O)x H和 - (CH 2 CH 2 CH 2 O)x H,且R 5和R 7分别为 - (CH 2 CH 2 O)x H和 - (CH 2 CH 2 CH 2 O)x H,A选自 - (CH 2 )n, - (CH 2 CH 2 -O-CH 2 CH 2)n - 和 - (CH 2 CH 2 -NH-CH 2 CH 2)n x为1〜55的整数,n为整数 r为1〜20,A:B:C的摩尔比为1:2〜20:0.6〜1.5。