通过碳二亚胺与H 3 N–B 12 H 11(1-)反应生成的含B 12 H 11胍基衍生物。连接硼团簇与有机化合物的新方法
摘要:
B 12 H 11 NH 3(1-)与碳二亚胺的反应可形成含有硼簇的胍盐。取决于碳二亚胺的侧链,B 12 H 12(2-)簇的这些衍生物可以不带电荷,或可以带有整体正电荷或负电荷。与B12H11NH3-的酰化反应和Schiff碱的形成相反,该反应可以制备具有脂族侧链的B12H11NH3-衍生物,这两种反应仅在芳族酰氯或分别为α,β-不饱和的芳族化合物上才能成功醛。B12H11NH3-的酰化 用苯甲酰氯与N-质子化的酰亚胺酸形式,带有单个总电荷。
Diallyldicarbonate was prepared and used for the amino protection of various compounds including amino acids, amino sugars and nucleosides.
制备了碳酸二烯丙酯,并将其用于各种化合物的氨基保护,包括氨基酸,氨基糖和核苷。
NITROGEN-CONTAINING COMPOUNDS SUITABLE FOR USE IN THE PRODUCTION OF POLYURETHANES
申请人:Evonik Degussa GmbH
公开号:US20180194889A1
公开(公告)日:2018-07-12
The present invention provides for the use of nitrogen compounds of formula (I) and/or of corresponding quaternized and/or protonated compounds for production of polyurethanes, compositions containing these compounds and polyurethane systems, especially polyurethane foams, which have been obtained using the compounds.
REACTIVE AMINE CATALYSTS FOR POLYURETHANE APPLICATIONS
申请人:Air Products and Chemicals, Inc.
公开号:US20160347901A1
公开(公告)日:2016-12-01
Tertiary amine catalysts having isocyanate reactive groups that are capable of forming thermally stable covalent bonds able to withstand temperatures up to 120° C. are disclosed. These catalyst can be used to produce polyurethane foam having the following desirable characteristics: a) very low chemical emissions over a wide range of environmental conditions and isocyanate indexes (e.g. indexes as low as 65 but higher than 60) while meeting all physical property requirements; b) sufficient hydrolytic stability to maintain the catalyst covalently bound to foam without leaching of tertiary amine catalyst when foam is exposed to water or aqueous solutions even at temperatures higher than ambient (temperature range 25° C. to 90° C.); and c) stable contact interface between the polyurethane polymer and other polymers (for example polycarbonate) with minimal migration of tertiary amine catalyst from polyurethane polymer to other polymers yielding no noticeable polymer deterioration at the point of contact even under conditions of heat and humidity.
Process for the biocidal treatment of surfaces, by applying an aqueous biocidal composition containing a biocidal agent (B), a surfactant (SA) when the said biocide is hydrophobic, and at least one water-soluble or water-dispersible organic copolymer (C) comprising at least one oligomeric or macromolecular unit (D) which can interact with the said biocide or with the micelles of surfactant(s) containing the said biocide when it is hydrophobic, and at least one hydrophilic macromolecular unit (E) which can interact with the surface to be treated and optionally with the said biocide. Use of the copolymer (C) in a biocidal composition for the treatment of surfaces, as an agent for the vectorization and/or controlled release of the said biocide onto the surface to be treated.