摘要:
A functional composition is provided that comprises at least one multi-functional Michael acceptor, at least one multi-functional Michael donor, and at least one weakly basic catalyst.
摘要:
A toughened nylon that comprises a matrix nylon and a long-chain nylon is described. The matrix nylon is prepared by the homopolymerization or copolymerization of cyclic lactams monomers and their corresponding amino acids. The structure of said cyclic lactams is represented by Formula (I) and the structure of amino acids is represented by (I′). In Formula (I) and (I′) A is H or alkyl with 1-8 carbon and 3≦n≦11. The long-chain nylon is selected from nylons that contain repeating units having structures represented by Formula (II), (III) or (IV). In Formula (II) D is —(CH2)x—, in which H may be substituted with C1-4 alkyl optionally; E is —(CH2)y— or phenylene, in which H may be substituted with C1-4 alkyl optionally; 4≦x≦34 and 4≦y≦34. In Formula (IV) 5≦u≦34, 5≦v≦34, and u≠v. The proportion of said long-chain nylon in the total weight of toughened nylon is 2-45%. As the toughened nylon has very good interface combination, only one melting peak is detected with differential scanning calorimetry. Besides the preparation process and application of the toughened nylon are described hereafter too.
摘要翻译:描述了包含基质尼龙和长链尼龙的增韧尼龙。 基质尼龙通过环状内酰胺单体及其相应的氨基酸的均聚或共聚制备。 所述环状内酰胺的结构由式(I)表示,氨基酸的结构由(I')表示。 在式(I)和(I')中,A是H或具有1-8个碳和3 <= n <= 11的烷基。 长链尼龙选自含有由式(II),(III)或(IV)表示的结构的重复单元的尼龙。 在式(II)中,D是 - (CH 2 CH 2)x - ,其中H可以被C 1-4烷基任选地取代; E是 - (CH 2)2 - 亚苯基,其中H可以被C 1-4烷基任选地取代; 4 <= x <= 34和4 <= y <= 34。 在式(IV)中,5 <= u <= 34,5 <= v <= 34,u
摘要:
Provided herein is a poly(ester amide) (PEA) polymer blend and a polymeric coating containing the PEA polymer blend. The PEA polymer blend has a Tg above the Tg of poly(ester amide benzyl ester) (PEA-Bz) or the Tg of poly(ester amide TEMPO). The PEA polymer blend can form a coating on an implantable device, one example of which is a stent. The coating can optionally include a biobeneficial material and/or optionally with a bioactive agent. The implantable device can be used to treat or prevent a disorder such as one of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof.
摘要翻译:本文提供了聚(酯酰胺)(PEA)聚合物共混物和含有PEA聚合物共混物的聚合物涂层。 PEA聚合物共混物在聚(酯酰胺苄酯)(PEA-Bz)或T N g N T T上方具有T N' 的聚(酯酰胺TEMPO)。 PEA聚合物共混物可以在可植入装置上形成涂层,其一个实例是支架。 涂层可任选地包括生物有益材料和/或任选地含有生物活性剂。 可植入装置可用于治疗或预防动脉粥样硬化,血栓形成,再狭窄,出血,血管解剖或穿孔之一,血管动脉瘤,易损斑块,慢性完全闭塞,跛行,静脉和人造移植物的吻合增殖等障碍 导管阻塞,输尿管阻塞,肿瘤阻塞及其组合。
摘要:
Polymer-bonded functional agents are each obtained by reacting a functional agent containing reactive groups with a polymer containing groups reactive with the reactive groups of the functional agent. The functional agent comprises at least one functional agent selected from the group consisting of antioxidants, ultraviolet absorbers, light stabilizers, infrared absorbers and antistatic agents. Use of these polymer-bonded functional agents can provide articles with improved functions.
摘要:
A polyamide which contains a monoolefinically unsaturated compound chemically bonded at the end of the polymer chain, a process for preparing this polyamide, a polyamide obtainable by crosslinking this polyamide, and also fibers, films, and moldings, comprising at least one such polyamide.
摘要:
A UV-protective water-soluble polyaminoamide comprising UV-absorbing end groups, wherein the polyaminoamide absorbs ultraviolet light radiation having a wavelength of about 200 nm to about 420 nm, compositions comprising the UV-protective polyaminoamide and methods of treating substrates with the UV-protective polyaminoamide.
摘要:
The present invention relates to PNA derivatives which carry, at the C terminus, or at both the C and N termini of the PNA backbone, one or more phosphoryl radicals. The phosphoryl radicals carry, where appropriate, one or more labeling groups, groups for crosslinking, groups which promote intracellular uptake, or groups which increase the binding affinity of the PNA derivative for nucleic acids. The invention furthermore relates to a process for preparing the above-mentioned PNA derivatives and to their use as pharmaceuticals or diagnostic agents.
摘要:
Cascade polymers, containing complex-forming ligands, optionally at least five ions of an element of atomic numbers 21-29, 39, 42, 44 or 57-83, as well as, if desired, cations of inorganic and/or organic bases, amino acids or amino acid amides, are valuable complexing compounds and complexes for diagnostics and therapy.
摘要:
An aromatic amide block copolymer containing a specific aromatic amide compound unit and having a weight average molecular weight, as reduced into standard polystyrene measured by the gel permeation chromatography, of from 10,000 to 1,000,000.
摘要:
The invention relates to hyperbranched copolyamides (HBPAs), to their production and to their use as additives, in particular as melt viscosity modifiers in thermoplastic polymer compositions.This copolyamide is obtained by a reaction between a monomer (I): A—R—Bf with A and B=polymerization functions of a 1st and 2nd type, respectively, which are capable of reacting with each other, R=hydrocarbon-based species and f=total number of B per monomer (preferably 2≦f≦10); and a monomer (II) A′—R′—B′ or the corresponding lactams, with A′, B′ and R′ having the same definition as that given above for A, B and R, respectively. This HBPA has a I/II molar ratio such that 0.125≦I/II≦2. One of the species R or R′ of (I) or (II) is aliphatic, cycloaliphatic or arylaliphatic.For example: A=NH2 and B=COOH or A=COOH and B=NH2 with F=2.A′=NH2 and B′=COOH or A′=COOH and B′=NH2.A—R—B2, e.g.: 5-aminoisophthalic acid or 3,5-diaminobenzoic acid and A′—R′—B′=ε-caprolactam.The yarns, fibres, films and moulded parts obtained using polymer compositions (e.g. PA) to which are added HBPA according to the invention are also included in this invention.
摘要翻译:本发明涉及超支化共聚酰胺(HBPAs),其生产和用作添加剂,特别是作为热塑性聚合物组合物中的熔体粘度改性剂。该共聚酰胺通过单体(I):AR-Bf与A和 B =能够彼此反应的第一和第二类型的聚合功能,R =烃类物质,f =每单体B的总数(优选2 <= f <10); 和单体(II)A'-R'-B'或相应的内酰胺,其中A',B'和R'分别具有与上述A,B和R相同的定义。 该HBPA的I / II摩尔比使得0.125 <= I / II&LE; 2.(I)或(II)的R或R'中的一个是脂族,脂环族或芳基脂族基。例如:A = NH 2和 B = COOH或A = COOH,B = NH2,F = 2.A'= NH2,B'= COOH或A'= COOH,B'= NH2AR-B2,例如:5-氨基间苯二甲酸或3,5 - 二氨基苯甲酸和A'-R'-B'=ε-己内酰胺。使用根据本发明加入HBPA的聚合物组合物(例如PA)获得的纱线,纤维,膜和模制部件也包括在本发明中。