Biological material embedded in hydrogels, a process for the embedding
thereof, and its use as artificial seed
    5.
    发明授权
    Biological material embedded in hydrogels, a process for the embedding thereof, and its use as artificial seed 失效
    嵌入水凝胶中的生物材料,其嵌入方法及其作为人造种子的用途

    公开(公告)号:US6164012A

    公开(公告)日:2000-12-26

    申请号:US230379

    申请日:1999-04-27

    CPC分类号: C05G3/0047 A01H4/001 A01N3/00

    摘要: The invention relates to a completely biodegradable hydrogel comprising polyester polyurethane polyurea containing urea groups as well as polysaccharides and/or their derivatives, the hydrogel containing plant material capable of dividing. The invention also relates to a process for the embedding of the biological material and the fabrication and shaping of the hydrogels from aqueous solutions. The hydrogels according to the invention may be used as coating material for embedding biological material capable of dividing, especially plant material, preferably plant cells, protoplasts, plant tissues and plant organs, as well as zygotic or somatic plant embryos, under sterile conditions for the purpose of protecting the material during storage, transport and handling. The hydrogels according to the invention may also contain further additives, for example, plant protection agents or nutrients. The embedded biological plant material according to the invention may be used as artificial seed.

    摘要翻译: PCT No.PCT / EP97 / 03906 Sec。 一九九九年四月二十七日 102(e)1999年4月27日PCT 1997年7月21日PCT公布。 公开号WO98 / 05197 日期1998年2月12日本发明涉及包含含有尿素基团的聚酯聚氨酯聚脲以及多糖和/或其衍生物的完全可生物降解的水凝胶,所述水凝胶含有能够分裂的植物材料。 本发明还涉及用于从水溶液中包埋生物材料和水凝胶的制造和成型的方法。 根据本发明的水凝胶可以用作在无菌条件下包埋能够分裂的生物材料的涂层材料,特别是植物材料,优选植物细胞,原生质体,植物组织和植物器官以及合子或体细胞植物胚胎 在储存,运输和处理过程中保护材料的目的。 根据本发明的水凝胶还可以含有其它添加剂,例如植物保护剂或营养物质。 根据本发明的嵌入式生物植物材料可以用作人造种子。

    Dewatering and purification of crude pyrrolidine
    6.
    发明授权
    Dewatering and purification of crude pyrrolidine 有权
    脱水和纯化粗吡咯烷

    公开(公告)号:US06353118B1

    公开(公告)日:2002-03-05

    申请号:US09716835

    申请日:2000-11-20

    IPC分类号: C07O295023

    CPC分类号: C07D295/023

    摘要: In a process for purifying crude pyrrolidine to give a pyrrolidine composition comprising more than 99% (m/m) of pyrrolidine and less than 0.3% (m/m) of water, crude pyrrolidine comprising from 40 to 98% (m/m) of pyrrolidine and having a water content of more than 2% (m/m) is subjected to continuous distillation at a pressure at the top of less than 950 hPa in a column having a stripping section and a rectifying section.

    摘要翻译: 在纯化粗制吡咯烷的方法中,得到包含大于99%(m / m)的吡咯烷和小于0.3%(m / m)的水的吡咯烷组合物,包含40-98%(m / m) 的吡咯烷并且具有大于2%(m / m)的水含量的混合物在具有汽提段和精馏段的塔中在小于950hPa的顶部的压力下进行连续蒸馏。

    Plant-treatment agents
    7.
    发明授权
    Plant-treatment agents 失效
    植物处理剂

    公开(公告)号:US06191071B1

    公开(公告)日:2001-02-20

    申请号:US09297628

    申请日:1999-05-04

    IPC分类号: A01N2510

    CPC分类号: A01N25/10

    摘要: The invention concerns novel plant-treatment agents comprising: at least one thermoplastically processable biodegradable polyester amide, optionally in a mixture with one or a plurality of further thermoplastically processable, biodegradable polymer components; at least one agrochemical substance; and optionally additives. The invention further concerns a process for preparing these agents, and their use in the application of agrochemical substances.

    摘要翻译: 本发明涉及新颖的植物处理剂,其包括:至少一种热塑性可加工的可生物降解的聚酯酰胺,任选地与一种或多种另外的热塑性可加工的可生物降解的聚合物组分的混合物; 至少一种农用化学物质; 和任选的添加剂。 本发明还涉及制备这些试剂的方法及其在应用农药物质中的应用。

    Preparation of pyrroles
    8.
    发明授权
    Preparation of pyrroles 有权
    吡咯的制备

    公开(公告)号:US6162928A

    公开(公告)日:2000-12-19

    申请号:US553254

    申请日:2000-04-20

    摘要: A process for preparing pyrroles of the formula I: ##STR1## where R.sub.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are hydrogen atoms, alkyl groups having from 1 to 12 carbon atoms or cycloalkyl groups having from 3 to 12 carbon atoms, by dehydrogenation of pyrrolidines of the formula II: ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, in the presence of a supported noble metal catalyst is described. In this process, the dehydrogenation is carried out at from 150 to 300.degree. C. and pressures of from 0.01 to 50 bar and the noble metal catalyst comprises from 30 to 100% by weight of:a) palladium on an oxide of a rare earth or an oxide of an element of the 4.sup.th group (transition group IV) of the Periodic Table, orb) a platinum/palladium mixture on aluminum oxide, an oxide of a rare earth or an oxide of an element of the 4.sup.th groupand from 0 to 70% by weight of alkali metal oxide or alkaline earth metal oxide.

    摘要翻译: 制备式I的吡咯的方法:其中R 1,R 2,R 3和R 4相同或不同,为氢原子,具有1至12个碳原子的烷基或具有3至12个碳原子的环烷基,通过脱氢 描述了在负载的贵金属催化剂的存在下,式II的吡咯烷(其中R 1,R 2,R 3和R 4如上定义)。 在该方法中,脱氢在150-300℃,压力为0.01至50巴,贵金属催化剂包含30-100重量%的:a)在稀土氧化物上的钯 或元素周期表第4族元素(过渡组IV)的氧化物,或b)在氧化铝上的铂/钯混合物,稀土的氧化物或第4族元素的氧化物, 0〜70重量%的碱金属氧化物或碱土金属氧化物。