deprotection steps have to be taken in the course of this type of preparation of the tripodligands 3. By reaction with (CH3CN)3Mo(CO)3, ligands 3 form Mo(CO)4 derivatives 4 or Mo(CO)3 derivatives 5, depending on the reaction conditions. In compounds 4, the ligands are coordinated in a bidentate mode with the soft donor atoms (P, S) coordinated and the hard donor function playing the role of the dangling arm
基于新戊烷-三脚架配体CH的制备3 C(CH 2 X)(CH 2 Y)(CH 2 Z(3(X = NR 2,NHR; Y = PR 2 ; Z = PR 2,SR,S - )该程序基于伯胺或仲胺对官能化的氧杂环丁烷CH 3 C(CH 2 OCH 2)CH 2 R 1的氨解裂解,从而生成官能化的氨基醇CH 3 C(CH 2 NHR) (CH 2 OH)(CH 2 R)或CH 3C(CH 2 NR 2)-(CH 2 OH)(CH 2 R)2。2中存在的R(例如OR)和OH基团的适当激活可实现SR或PR 2供体功能的取代。根据在每个反应步骤中存在的基团的性质,在每个反应步骤中存在的各种保护基团和基团,在这种类型的三脚架配体3的制备过程中必须采取各种保护和脱保护步骤。通过与(CH 3 CN)3 Mo(CO)3反应,配体3形成Mo(CO)4衍生物4或Mo(CO)3衍生物5,取决于反应条件。在化合物4
Process for improving the dyeability of woven or non-woven textiles
申请人:AUSCHEM S.p.A.
公开号:EP0272941A2
公开(公告)日:1988-06-29
A process for improving the dyeability of a woven or non-woven textile comprises comprises treating the textile, before dyeing, with an aqueous dispersion of a polyurethane having cationic groups randomly distributed in the macromolecule.
Water-dispersible polyester composition for image recording medium
申请人:Toyo Boseki Kabushiki Kaisha
公开号:EP0569003A1
公开(公告)日:1993-11-10
A water-dispersible polyester composition for an image recording medium, comprising (1) a polyester having a glass transition temperature of not less than 40°C, a specific gravity of not less than 1.25, a value of SP of 9.5-12.0, and at least one kind of hydrophilic polar group, and which is insoluble in methyl ethyl ketone, toluene, and a mixed solvent thereof, wherein 65% by mole or more of a glycol component constituting the polyester is ethylene glycol, in a proportion of 5-50% by weight, (2) an organic compound compatible with water in a proportion of 0-20% by weight, and (3) water in a proportion of 30-95% by weight. When used for an image recording layer of an image recording medium, the composition of the invention is conducive to the durability of the recorded images excellent in heat resistance, resistance to plasticizer, resistance to fingerprint, and solvent resistance.
In Wasser lösliche oder dispergierbare Polyurethanharnstoffe, ein Verfahren zu deren Herstellung und ihre Verwendung zur Beschichtung beliebiger Substrate
申请人:BAYER AG
公开号:EP0792899A1
公开(公告)日:1997-09-03
Die Erfindung betrifft neue Dispersionen von Polyurethanpolyharnstoffen, welche als wesentliche Bausteine 1-Methyl-2,4- und/oder -2,6-diisocyanatocyclohexan in über Urethan- und Harnstoffgruppen eingebauter Form enthalten, ein Verfahren zu ihrer Herstellung sowie ihre Verwendung in Lacken und Beschichtungsmitteln.
The present invention provide a biocompatible polyurethane or polyurethane urea containing, in the side chain, phosphorylcholine structure represented by the formula (1)
wherein R1 is C1-20 alkyl, C6-12 aryl, C7-20 aralkyl or a group of the formula:
R4 - (A)n-
(wherein A is C2-10 oxyalkylene, and (A)n may be constituted of one kind of oxyalkylene groups or of two or more kinds of oxyalkylene groups linked together in blocks or at random; n is an integer of 1 to 30; and R4 is C1-20 alkyl, C6-12 aryl or C7-20 aralkyl); and R2 and R3 each represent C1-20 alkyl, C6-12 aryl or C7-20 aralkyl and may be the same or different;
and an antithrombogenic medical product prepared using the polyurethane or polyurethane urea.