Method of forming polysaccharide structures
    22.
    发明授权
    Method of forming polysaccharide structures 有权
    形成多糖结构的方法

    公开(公告)号:US07807823B2

    公开(公告)日:2010-10-05

    申请号:US11050003

    申请日:2005-02-03

    IPC分类号: C07B37/02 C07H1/00

    摘要: A process for forming polysaccharide structures such as beads, gel films and porous coatings on porous substrates by forming a room temperature gel-inhibited solution of a polysaccharide, one or more gel-inhibiting agent(s) and a solvent such as water, heating the mixture until all the components are dissolved, cooling the mixture as a solution to about room temperature, forming a three dimensional structure with the solution and adding the structure to a gelling agent to form a polysaccharide gel. Optionally, the solution can be added to a porous structure such as a non-woven fabric or a porous membrane and the solution is allowed to dry before being subjected to the gelling agent. Porous structures having a polysaccharide coating and being capable of convective flow through the pores of the structure and diffusive flow through the coating can be formed.

    摘要翻译: 通过形成多糖,一种或多种凝胶抑制剂和溶剂如水的室温凝胶抑制溶液,在多孔基材上形成多糖结构如珠,凝胶膜和多孔涂层的方法,加热 混合物直到所有组分溶解,将溶液冷却至约室温,用溶液形成三维结构,并将结构加入胶凝剂中以形成多糖凝胶。 任选地,可以将溶液加入到诸如无纺布或多孔膜的多孔结构中,并使溶液在经受胶凝剂之前干燥。 可以形成具有多糖涂层并且能够对流流过结构的孔和通过涂层的扩散流的多孔结构。

    Methylation or ethylation agent and process for 1,4-addition of a methyl
or ethyl group to an .alpha., .beta.-unsaturated keto compound
    30.
    发明授权
    Methylation or ethylation agent and process for 1,4-addition of a methyl or ethyl group to an .alpha., .beta.-unsaturated keto compound 失效
    甲基化或乙基化试剂以及将α,β-不饱和酮化合物1,4-甲基或乙基1,4-加成的方法

    公开(公告)号:US5908944A

    公开(公告)日:1999-06-01

    申请号:US211230

    申请日:1994-09-30

    摘要: This invention describes a new methylation or ethylation agent containing trimethyl aluminum or dimethyl zinc or triethyl aluminum as methyl or ethyl source, which additionally contains catalytic amounts of one or more copper(I) and/or copper(II) compounds as well as a process for the 1,4-addition of a methyl or ethyl group to an .alpha.,.beta.-unsaturated or an .alpha.,.beta.-double unsaturated ketone or an .alpha.,.beta.-unsaturated aldehyde using the agent according to the invention.By using only catalytic amounts of copper and a CKW (chlorinatedhydrocarbon)-free reaction medium, the new methylation/ethylation agent/process is distinguished by its environmental compatibility and it is, for example, suitable for the production of initial products for the synthesis of biologically effective compounds.

    摘要翻译: PCT No.PCT / EP92 / 02227 Sec。 371日期1994年9月30日 102(e)1994年9月30日PCT PCT 1992年9月28日PCT公布。 公开号WO93 / 06066 日期1994年4月1日本发明描述了含有三甲基铝或二甲基锌或三乙基铝作为甲基或乙基来源的新的甲基化或乙基化剂,其另外含有催化量的一种或多种铜(I)和/或铜(II)化合物 以及使用根据本发明的试剂将甲基或乙基加成到α,β-不饱和或α,β-双不饱和酮或α,β-不饱和醛的方法。 通过仅使用催化量的铜和CKW(氯化烃)的反应介质,新的甲基化/乙基化试剂/方法的特征在于其环境相容性,并且其例如适用于生产用于合成 生物有效的化合物。