[EN] ABSORBENT COMPOSITIONS INCLUDING AMINO-SILOXANES<br/>[FR] COMPOSITIONS D'ABSORBANT COMPRENANT DES AMINOSILOXANES
申请人:GE OIL & GAS INC
公开号:WO2018190815A1
公开(公告)日:2018-10-18
An absorbent composition including an amino-siloxane is presented. The amino- siloxane includes structure (I): wherein R1 is independently at each occurrence a C1-C6 aliphatic or aromatic radical; R2 is independently at each occurrence a C2-C10 aliphatic or aromatic radical; and R3 is independently at each occurrence a C1-C18 aliphatic or aromatic radical or R4, wherein R4 comprises structure (II): wherein X is independently at each occurrence an electron donating group; and n is at least 1. Methods of reducing an amount of carbon dioxide in a process stream using the absorbent composition are also presented.
SEQUENCE-CONTROLLED OLIGOSILOXANE AND MANUFACTURING METHOD AND OLIGOSILOXANE SYNTHESIZER THEREFOR
申请人:NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
公开号:US20200079803A1
公开(公告)日:2020-03-12
The purpose of the present invention is to provide a method for producing an oligosiloxane and an oligosiloxane synthesizer, by which an oligosiloxane can be efficiently produced. An oligosiloxane can be efficiently produced by the method for producing an oligosiloxane, which includes a condensation step for generating a hydrosiloxane having a structure represented by the following Formula (d) by reacting an alkoxysilane having a structure represented by the following Formula (b) with a hydrosilane having a structure represented by the following Formula (c) in the presence of a boron compound having Lewis acidity, and a hydrosilylation step for generating an alkoxysiloxane having a structure represented by the following Formula (f) by reacting the hydrosiloxane having the structure represented by Formula (d) generated in the condensation step with a carbonyl compound represented by the following Formula (E) in the presence of a boron compound having Lewis acidity. Moreover, an oligosiloxane having arbitrary substituent sequences can be produced.
Studies on the synthesis and thermal properties of alkoxysilane-terminated organosilicone dendrimers
作者:Kanak Saxena、C. S. Bisaria、A. K. Saxena
DOI:10.1002/aoc.1615
日期:2010.3
psi) yielded epoxy‐terminated dendrimer in very high yield (95%). The epoxy‐terminated dendrimer was reacted with aminopropylalkoxysilanes to yield the next‐generation dendrimer bearing dialkoxy and trialkoxy silane groups. The dendrimers were characterized by the usual physico‐chemical techniques, i.e. elemental analysis, FT‐IR, 1H, 13C and 29Si NMR. Thermalstudies (Thermogravimetric analysis and
One‐Pot Sequence‐Controlled Synthesis of Oligosiloxanes
作者:Kazuhiro Matsumoto、Yuki Oba、Yumiko Nakajima、Shigeru Shimada、Kazuhiko Sato
DOI:10.1002/anie.201801031
日期:2018.4.16
employed industrially for more than 70 years, synthetic routes to generate silicones remain limited, and the sequence‐controlled synthesis of oligo‐ and polysiloxanes still represents a major challenge in silicone chemistry. Described here is a highly selective sequence‐controlled synthesis of linear, branched, and cyclic oligosiloxanes by simple iteration of two reactions, specifically, a B(C6F5)3‐catalyzed
有机硅(有机聚硅氧烷)已在广泛的研究领域中得到应用,其独特而宝贵的性能使得这些材料几乎不可替代。尽管有机硅已在工业上使用了70多年,但合成有机硅的途径仍然受到限制,低聚硅氧烷和聚硅氧烷的顺序控制合成仍然代表着有机硅化学的主要挑战。这里描述的是通过两个反应的简单迭代进行高度选择性的序列控制的线性,支化和环状低聚硅氧烷的合成,特别是烷氧基硅烷与氢硅烷的B(C 6 F 5)3催化脱烃交叉偶联和B( C 6 F 5)在单个烧瓶中3催化的羰基化合物的氢化硅烷化。可以通过加氢硅烷单体的加入顺序来精确控制所得低聚硅氧烷的顺序。
[EN] CARBON DIOXIDE ABSORBENT AND METHOD OF USING THE SAME<br/>[FR] ABSORBANT DE DIOXYDE DE CARBONE ET SON PROCÉDÉ D'UTILISATION
申请人:GEN ELECTRIC
公开号:WO2011014273A1
公开(公告)日:2011-02-03
In accordance with one aspect, the present invention provides an amino-siloxane composition comprising at least one of structures I, II, III, IV or V said compositions being useful for the capture of carbon dioxide from gas streams such as power plant flue gases. In addition, the present invention provides methods of preparing the amino-siloxane compositions are provided. Also provided are methods for reducing the amount of carbon dioxide in a process stream employing the amino-siloxane compositions of the invention as species which react with carbon dioxide to form an adduct with carbon dioxide. The reaction of the amino-siloxane compositions provided by the present invention with carbon dioxide is reversible and thus, the method provides for multicycle use of said compositions.