The present invention relates to a process for preparing isocyanates.
本发明涉及一种制备异氰酸酯的方法。
Polymeric coupling agents and pharmaceutically-active polymers made therefrom
申请人:Santerre J. Paul
公开号:US20050255082A1
公开(公告)日:2005-11-17
A pharmaceutically-active polymeric compound of the general formula (I),
Y-[Y
n
-LINK B-X]
m
-LINK B (I)
wherein (i) X is a coupled biological coupling agent of the general formula (II)
Bio-LINK A-Bio (II)
wherein Bio is a biologically active agent fragment or precursor thereof linked to LINK A through a hydrolysable covalent bond; and LINK A is a coupled central flexible linear first segment of <2000 theoretical molecular weight linked to each of said Bio fragments; (ii) Y is LINK B-OLIGO; wherein (a) LINK B is a coupled second segment linking one OLIGO to another OLIGO and an OLIGO to X or precursor thereof; and (b) OLIGO is a short length of polymer segment having a molecular weight of less than 5,000 and comprising less than 100 monomeric repeating units; (iii) m is 1-40; and (iv) n is selected from 2-50. The compounds are useful as biomaterials, particularly, providing antibacterial activity in vivo. Also provided are biological coupling agents useful as intermediates in the preparation of the pharmaceutically-active polymeric compounds.
一种具有一般式(I)的药用活性聚合物化合物,
Y-[Y
n
-LINK B-X]
m
-LINK B (I)
其中(i)X是一种偶联的生物偶联剂,具有一般式(II)
Bio-LINK A-Bio (II)
其中Bio是与LINK A通过可水解共价键连接的生物活性剂片段或其前体;而LINK A是与每个Bio片段连接的理论分子量小于2000的偶联中心柔性线性第一段;(ii)Y是LINK B-OLIGO;其中(a)LINK B是将一个OLIGO与另一个OLIGO以及一个OLIGO与X或其前体连接的偶联的第二段;(b)OLIGO是具有分子量小于5,000且包含少于100个单体重复单元的短聚合物段;(iii)m为1-40;(iv)n从2-50中选择。这些化合物可用作生物材料,特别是在体内提供抗菌活性。还提供了作为药用活性聚合物化合物制备中间体的生物偶联剂。
CONTACT-KILLING, QAC FUNCTIONALIZED THERMOPLASTIC POLYURETHANE FOR CATHETER APPLICATIONS
申请人:THE UNIVERSITY OF AKRON
公开号:US20190106525A1
公开(公告)日:2019-04-11
In various embodiments, the present invention provides a functionalized thermoplastic polyurethane (TPU) containing bulk incorporated or surface-grafted quaternary ammonium compounds (QAC)s for contact-killing of a variety of microbes, where the QACs are on the surface of TPU to provide a sterile surface material that prevents bacteria commonly involved in device-associated infections (DAIs) from proliferating. The functionalized TPUs of the present invention can be formed into a wide variety of 3-dimensional shapes, such as catheters, medical tubing, laryngeal or tracheal stents, sutures, prosthetics, wound dressings, and/or a coating for medical devices and contains the residue of either a QAC containing diol monomer or an alkene functional diol monomer, which then allows the TPU to be functionalized with a QAC containing disulfide or free thiol compound, to form a quaternary ammonium functionalized thermoplastic polyurethane compound having antimicrobial properties for use in medical devices.
A coating composition comprising a binder of a. polyisocyanate crosslinking agent;
b. an isocyanate-reactive component having at least one compound having the following formula (I) including isomers and mixtures of isomers thereof:
wherein
R, R
1
, R
2
, X, Y, Z, m, n, p, q, r and s are described in the specification and a two component composition formulated with the above constituents and substrates, such as, automotive and truck bodies and parts coated with the novel composition and novel amine and/or hydroxy amine compounds are also part of the invention.