Topic
Polycarbonate
About: Polycarbonate is a research topic. Over the lifetime, 14032 publications have been published within this topic receiving 141740 citations. The topic is also known as: PC & Polycarbonate, PC.
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TL;DR: Mesoporous oxide fibers were prepared in one-pot by permeating surfactant-containing clear precursor solutions into the confined spaces of polycarbonate membranes and subsequent calcination.
38 citations
Patent•
08 Jul 2004
TL;DR: A polycarbonate resin composition comprising 100 parts by weight of a poly-carbonate resin (component A), 0.01 to 1 part of a fatty acid ester compound (component C) which is an ester of polyhydric alcohol and an aliphatic carboxylic acid has a molecular weight of 500 to 2,000 g/mol.
Abstract: A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part by weight of a fatty acid ester compound (component C) which is an ester of a polyhydric alcohol and an aliphatic carboxylic acid and has a molecular weight of 500 to 2,000 g/mol, as well as molded articles thereof. The polycarbonate resin composition provides molded articles having excellent transparency, color and resistance to ultraviolet radiation, is excellent in heat stability at the time of molding and releasability and fully suppresses the production of a deposit on a metal mold.
37 citations
TL;DR: In this article, the enzyme-catalyzed synthesis of poly(p-ethylphenol) (PEP) was modified by copolymerization with polycarbonates through triphosgene at low temperature to form polycarbonate-co-poly(p -ethylphenols) (PC-Co-PEP), which has an optical absorption in the UV range.
Abstract: The enzyme-catalyzed synthesis of poly(p-ethylphenol) (PEP) was modified by copolymerization with polycarbonates through triphosgene at low temperature to form polycarbonate-co-poly(p-ethylphenol) (PC-co-PEP). FTIR, NMR, GPC, and thermal analysis verified the formation of PC-co-PEP. The copolymers have an optical absorption in the UV range. CdS semiconductor nanocrystallites were synthesized in reversed micelles with subsequent insitu enzymatic copolymerization of p-ethylphenol and 4-hydroxythiophenol in the same medium. TEM and ATR–FTIR showed that the polymer precipitated in spherical morphologies, incorporating CdS nanocrystals into the polymer matrix, with surface hydroxyl groups. The polymer/CdS core was then dispersed into polycarbonate. The polymer/CdS nanocomposites showed higher optical aborbance in the UV-vis range when compared to the polymer matrix without CdS. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1851–1868, 1999
37 citations
Patent•
26 May 1999TL;DR: In this article, a process for producing high-molecular-weight polycarbonate, which comprises polymerizing a diol and a carbonate diester through transesterification with heating in the presence of a basic oxide catalyst, was presented.
Abstract: Provided are a process for producing a high-molecular-weight polycarbonate, which comprises polymerizing a diol and a carbonate diester through transesterification with heating in the presence of a basic oxide catalyst, and an electrophotographic photoreceptor containing this high-molecular-weight polycarbonate as a binder resin. This process can easily produce the high-molecular-weight polycarbonate safely without having an adverse effect on humans and environment. This electrophotographic photoreceptor can provide a high-quality image having a high stability at high speed over a long period of time.
37 citations
Patent•
21 Sep 1993
TL;DR: In order to produce scratch-resistant silicon oxide layers (coatings) on plastics, such as polymethyl methacrylate or polycarbonate by plasma coating by means of a gaseous organosilane and/or organosailoxane, a plasma treatment with an unsaturated organic compound whose unsaturated group preferably contains more than one pi-electron pair bonded to carbon or nitrogen atoms, for example acetylene, or with nitrogen, optionally together with oxygen or hydrogen, is carried out before or during the plasma coating as mentioned in this paper.
Abstract: In order to produce scratch-resistant silicon oxide layers (coatings) on plastics, such as polymethyl methacrylate or polycarbonate by plasma coating by means of a gaseous organosilane and/or organosiloxane, a plasma treatment with a gaseous or vapour-form unsaturated organic compound whose unsaturated group preferably contains more than one pi -electron pair bonded to carbon or nitrogen atoms, for example acetylene, or with nitrogen, optionally together with oxygen or hydrogen, is carried out before or during the plasma coating.
37 citations