Hydrogen phosphates: Self initiated organocatalysts for the controlled ring-opening polymerization of cyclic esters
摘要:
A series of arylhydrogenphosphates and aryldihydrogenphosphates was synthesized and characterized using spectroscopic methods and single crystal X-ray diffraction. These compounds were assessed as catalysts towards the ring-opening polymerization and proved to be potent organocatalysts for the ring-opening polymerization of cyclic esters. The bulk polymerizations were performed in the absence of external initiator. The polymerization proceeds in a controlled fashion which leads to well defined polyesters with narrow molecular weight distributions. In the post polymerization experiments, kinetics, mechanism and monomer concentration effects were investigated. The kinetic results have confirmed the pseudo-living character of the polymerizations and mechanistic studies suggest that the polymerization operates through a cationic mechanism. (C) 2013 Elsevier B.V. All rights reserved.
Subphthalocyanine derivative having phosphorus derivative as axially substituted group, method for manufacturing the same and optical film using the same
申请人:Mori Tomohiro
公开号:US20100036134A1
公开(公告)日:2010-02-11
A novel subphthalocyanine derivative having a phosphorus derivative-substituted group as an axially substituted group which has an excellent solubility, a method for producing the same and an optical film containing the same, are provided without impairing excellent properties peculiar to the original subphthalocyanines. The novel subphthalocyanine derivative is represented by the following chemical formula (1), and it is applicable for optical films.
Stain and Color Change Resistant Poly(Phenylene Ether) Composition
申请人:SABIC INNOVATIVE PLASTICS IP B.V.
公开号:US20130253105A1
公开(公告)日:2013-09-26
Disclosed are polymer compositions, comprising:
(a) a poly(phenylene ether);
(b) a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene;
(c) a polybutene;
(d) a flame retardant;
(e) an anti-UV agent wherein the agent comprises a trisaryl-1,3,5-triazine;
(f) a copolymer of ethylene and a C
3
-C
12
alpha-olefin; and
(g) a polyolefin homopolymer;
wherein the polymer composition does not contain a benzotriazole-type UV absorber; all weight percents are based on the total weight of the composition; and wherein an article made from the composition:
(i) is substantially stainless;
(ii) exhibits a CIELAB color shift, (ΔE) of 3 or less after 168 hours of heat exposure at 75° C.; and
(iii) exhibits a CIELAB color shift, (ΔE) of 12 or less after 300 hours of xenon arc exposure according to ASTM D 4459.
Also disclosed are processes for making the compositions as well as articles derived therefrom.
本发明涉及聚合物组合物,包括:(a)聚苯醚;(b)烯丙基芳香化合物和共轭二烯的氢化嵌段共聚物;(c)聚丁烯;(d)阻燃剂;(e)抗紫外线剂,其中该剂包括三芳基-1,3,5-三嗪;(f)乙烯和C3-C12α-烯烃的共聚物;和(g)聚烯烃均聚物;其中聚合物组合物不含苯并三唑类紫外线吸收剂;所有重量百分比均基于组合物的总重量;以及由该组合物制成的物品:(i)基本上不锈;(ii)在75°C的热暴露168小时后,显示CIELAB颜色偏移(ΔE)小于3;和(iii)根据ASTM D 4459,在300小时氙弧曝光后,显示CIELAB颜色偏移(ΔE)小于12。还公开了制备该组合物以及由此得到的物品的工艺。
Disclosed is a flexible, wrinkle-resistant cable jacketing composition, comprising: cable jacketing compositions, comprising specific amounts of a poly(phenylene ether), a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, an olefin homopolymer, a polybutene, and a flame retardant. Also disclosed are processes for making such compositions, as well as articles derived therefrom.
Die Erfindung betrifft flammwidrige Polymermischungen aus Polycarbonat, Styrolpolymerisat und/oder Pfropfpolymerisat sowie Polyphosphat, die organische Chlor- und Bromverbindungen und Polytetrafluorethylen enthalten können.
Verfahren zur Herstellung von Polyphosphaten, nach diesem Verfahren hergestellte Polyphosphate und ihre Verwendung
申请人:BAYER AG
公开号:EP0103227A1
公开(公告)日:1984-03-21
Die Anmeldung betrifft ein Verfahren zur Herstellung von verzweigten Polyphosphaten durch Umsetzung mindestens eines aromatischen Diols mit mindestens einem Phosphorsäuretriester in Gegenwart basischer Alkali- oder Erdalkaliverbindungen. Die Polyphosphate können zur Herstellung von Überzügen und Formkörpern sowie zur Abmischung mit anderen Polymeren verwendet werden.