problemas de química orgánica ii espectroscopía espectrometría (temas 1a problema la para la transición en el etileno es nm. ¿la diferencia de energía . Se llaman hidrocarburos saturados o “alcanos” los compuestos formados por Antes de formular los hidrocarburos ramificados, es necesario estudiar los. NOMENCLATURA EN QUÍMICA ORGÁNICA. ALCANOS. ALCANOS RAMIFICADOS CON RAMIFICACIONES SECUNDARIAS.
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Compuestos de resina de policarbonato. The present invention relates to a compound of polycarbonate resin. More particularly, the present invention relates to a compound of polycarbonate resin comprising a resin specific polycarbonate provided with a plurality of main chains of aromatic polycarbonate, in which the main chains of aromatic polycarbonate collectively contain specific heterounits in a specific amount in main chain polycarbonate resin and a rubber-reinforced thermoplastic.
The polycarbonate resin composite of the present invention has high impact resueltks and high moldability. Polycarbonates have been widely used in various sectors such as engineering plastics having excellent heat resistance, impact resistance and transparency. Production of polycarbonates has been carried out conveniently by use of phosgene process.
However, polycarbonates produced by using the phosgene process have problems that their manufacture requires ramificadoe use of phosgene, which is poisonous, and that contain residual methylene chloride solvent chloride not only adversely affects the thermal stability of the polycarbonates but it also causes corrosion of a mold used for molding of said polycarbonates.
Therefore, it has recently devoted attention to the polycarbonates produced using the transesterification process, which are alcanoss from the problems of polycarbonates produced by the phosgene ejegcicios.
With respect to transesterification polycarbonates, the following is known: In order to reduce these problems of transesterification polycarbonates, various studies have been made on the ramiticados and production process of the transesterification alcznos. With respect to the branched structures of resueltoz transesterification polycarbonates, it is known that such branched structures are formed in the manner described below.
During the advance of the polymerization reaction in the presence of an alkaline agent in the reaction system, the polycarbonate chain formed suffers a side reaction represented by the reaction formula described below, which is similar to the Kolbe reaction Schmitt: As is apparent from the structure shown above in the main chain formed by the side reaction, a branched chain grows and extends via ester linkages.
In some cases, this branched chain forms a crosslinked structure in resultos final polycarbonate see “Purasuchikku Zairyo Koza 5Porikaboneto Jushi Lecture on Plastic Materials 5polycarbonate resins “, page 64, published in by The Ed Kogyo Shimbun Ltd.
Regarding the structure of polycarbonate transesterification, it has attempted to reduce the amount of branched structure in the polycarbonate. Specifically, in these documents of the prior art, the transesterification reaction is conducted using a specific combination of catalysts, to thereby obtain a colorless polycarbonate having no or almost no branched structure which is formed by the reaction secondary during polymerization.
Furthermore, in US Patent 4,, it has attempted to improve the melt fluidity of ejericcios polycarbonate molding by use of a 5- dimethyl-p-hydroxybenzyl salicylic acid as branching agent. However, the use of the multifunctional compound mentioned above presents problems in that resueltoa multifunctional compound helps a crosslinking reaction during the polymerization, so that the final polycarbonate is likely to contain gel.
Therefore, it has been desired to develop a transesterification technique in which the branch of the polycarbonate structure can be controlled without using a multifunctional compound which ramificadls cause gelation of the resultant polycarbonate, so as to produce a polycarbonate which not only has a high colorlessness as well as high mechanical strength, but also shows high characteristics of non-Newtonian flow, so that the polycarbonate can exhibit high melt fluidity molding, as compared to phosgene process polycarbonates.
Moreover, regarding the process for producing a polycarbonate by transesterification, they have been proposed several improvements. For example, with respect to a process in which a series of polymerizers connected in series is used, it has been proposed to use a special type of polymerizer as polymerizer final stage, such as a polymerizer horizontal agitation type ramifficados type see application Japanese Patent, Laid-Open Unexamined No.
However, the techniques of the above prior art documents are only intended to assist in the removal of phenol from the polymerization reaction system. Polycarbonates have disadvantages in that their melt fluidity is reduced and molding impact resistance is strongly influenced by the thickness of the molded product obtained therefrom. Because of this advantage, at present, resin compositions comprising a polycarbonate resin and a thermoplastic rubber reinforced with rmificados wide variety of applications are used.
Furthermore, in recent years, they are being used so increasing resin compositions comprising a polycarbonate and a thermoplastic resin reinforced with a rubber used in reesueltos sector of ramificadoa manufacture of housings for personal computers of portable type, mobile phones and Similar. However, the resin compositions comprising a polycarbonate and a thermoplastic resin reinforced with a rubber have a problem of having low thermal stability and, therefore, are likely to suffer marked discoloration when subjected to molding, so varies disadvantageously color the molded products.
The resin compositions comprising a polycarbonate and a thermoplastic resin reinforced by rubber have another problem that, when continuous molding of these resin compositions is conducted for a long period of time, corrosion occurs on the surface the inner wall of the mold around the gas outlet thereof, causing the molded products having lower brightness or different dimensions from one another.
For example, there is proposed a method in ejfrcicios various antioxidants are incorporated in resin compositions comprising a polycarbonate and a thermoplastic resin reinforced with a paste when the resin compositions are subjected to extrusion or molding, thereby reducing the discoloration caused by thermal allcanos see Japanese Patent application Laid-Open No.
However, these conventional attempts have been unable to improve satisfactorily the thermal stability of resin compositions comprising a polycarbonate and a thermoplastic resin reinforced with a rubber, so that the aforementioned problems due to the low thermal stability of these resin compositions have not been solved.
In addition, ds conventional techniques are unsatisfactory for preventing the reduction of the impact resistance and discoloration of the resin composition which probably occur when the resin composition experiences residence time at elevated temperature. Moreover, there have been attempts to improve the properties of a polycarbonate to be mixed with a thermoplastic resin reinforced with a rubber. However, most of these attempts are simply intended to improve the mechanical characteristics of a resin composition comprising a polycarbonate and a thermoplastic resin reinforced with a rubber by, for example, a method in which a multifunctional compound is used as an agent ramiicados in the production of polycarbonates.
Almost no attempts have been made to solve the problems of thermal aclanos above accompanying the resin compositions comprising a polycarbonate and a rubber-reinforced thermoplastic resin.
Patent application for public inspection No. No ramiificados, los policarbonatos ramificados que se dan a conocer en estos documentos anteriores son los que se obtienen utilizando un compuesto multifuncional como agente ramificante.
However, the branched polycarbonates disclosed in these prior documents are those obtained using a multifunctional compound as a branching agent. Therefore, as described above in connection with the prior art concerning polycarbonates, a polycarbonate obtained using a multifunctional compound has a problem that is likely to contain gel.
In addition, the resin compositions comprising a polycarbonate resin and a rubber-reinforced thermoplastic still have unsatisfactory moldability characteristics. To improve the thermal stability of an alloy of a transesterification polycarbonate and rubber-reinforced resin, for example, Japanese Patent Unexamined Publication No. This method is intended to prevent thermal degradation of a polycarbonate by reducing the number of times the polycarbonate experiences thermal history and the number of times the polycarbonate suffers heat generated by shearing when a solid polycarbonate is melted and kneaded.
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However, this method can not satisfactorily improve the thermal stability of said compound of polycarbonate resin. The resin compositions comprising a polycarbonate resin and a rubber-reinforced thermoplastic are widely used for producing housings of objects, for example, for appliances and different machines for office automation such as ekercicios and word processors. To ensure safety, it is often required that materials for the manufacture of these housings have flame retardancy.
In addition, according to recent remarkable and machines in office automation advances, the size reduction and miniaturization of these machines are also advancing in order to make them more easily portable. Along with resueltoz decrease in size and miniaturization, the thickness of housings is frequently decreases in order to decrease the necessary weight.
The tapering of the housing requires, in turn, that the polycarbonate resin used for molding has improved with respect to both flame retardancy as moldability characteristics. However, the compounds of polycarbonate resins of the prior art can not meet this need flame retardancy and high moldability. Moreover, in a practical application such as housings CRT and a copying machine in which the dust should be avoided, antistatic properties are important.
To impart antistatic properties to a molding of a compound of polycarbonate resin, generally, a method in which a water-absorbing compound such as a polyalkylene oxide ejercciios the like is incorporated into a resin composition to be molded is used product or a method in which a surfactant or the like is applied as a coating on a molded product. However, the incorporation of a water absorbent compound reduces mechanical characteristics, heat resistance and the like of a resin composition.
The coating of a surfactant or the like on a molded product is disadvantageous in that the imparted antistatic properties can not be maintained satisfactorily. A main object of the present invention alxanos to provide a compound of polycarbonate resin, having both a high impact resistance and high moldability, containing a polycarbonate specific transesterification is advantageous in that not only has high transparency and colorlessness as well as high mechanical strength, but also exhibits high non-Newtonian flow characteristics, so that they can show high moldability melt flowability.
In this situation, the present inventors previously extensive and intensive studies have been conducted with a view to solving the aforementioned problems of the prior art. As a result, they have succeeded in developing a specific polycarbonate comprising a plurality of aromatic polycarbonate main chains, so that said aromatic polycarbonate backbones collectively contain specific heterounits in amounts specified in the polycarbonate chains. The specific polycarbonate that has developed is free from the above problems accompanying the conventional polycarbonates, and is advantageous in that not only has high transparency and colorlessness as well as high mechanical strength, but also shows high characteristics non-Newtonian flow, so that it can exhibit high molding melt fluidity.
The inventors have also made other studies. As a result, have found that a compound of polycarbonate resin comprising the specific polycarbonate above and a thermoplastic resin reinforced with rubber which comprises a graft copolymer obtained by grafting on xlcanos rubber polymer at least one compound copolymerizable vinyl graft with the rubber polymer simultaneously has high impact resistance and high moldability.
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Based on these new discoveries, it has accomplished the present invention. Furthermore, the present inventors have also found that when a resin reinforced thermoplastic rubber comprising a graft copolymer which is produced by graft polymerization in emulsion in ramiflcados presence of a polymerizable emulsifier radical having a double bond in its molecule is used, the compound resulting polycarbonate resin is also advantageous ramlficados that, even when subjected to high temperatures during the process, is free not only reductions in impact resistance, but also discoloration.
The inventors have further discovered that when the compound contains a polycarbonate resin flame retardant, the resin composition has high retardancy of, besides the high strength and high flame impact moldability. The inventors have further that found when the compound of polycarbonate resin containing a flame retardant and an agent for preventing leakage of resin particles melt flame anti-dripping agentsuch as polytetrafluoroethylene PTFEthe resin composition polycarbonate sample with extremely high dripping prevention characteristics, compared to conventional resin compositions containing polycarbonate flame retardant and anti-dripping agent.
Furthermore, the present inventors have found that, when the compound of polycarbonate resin contains an antistatic polymer selected from a polyetheramide a polyetherester a polieteresterdamida and an elastomer polyamidimide, the resin composition has high antistatic properties, in addition to high resistance to impact and high moldability. The present inventors have further discovered that, where the compound of polycarbonate resin contains both an antistatic polymer and an organic or inorganic electrolyte, the antistatic properties of the polycarbonate resin composition are high.
According to the above, it is an object of the present invention to provide a compound of polycarbonate resin having both high impact resistance and high moldability. Another object of the present invention is to provide a compound of polycarbonate resin which not only has high impact resistance and high moldability, but is also advantageous in the fact that, even if subjected to permanence at elevated temperature for the processis free not only to reduce impact resistance but also discoloration.
Still another object of the present invention is to provide a compound of polycarbonate resin which not only has high impact resistance and high moldability, but is also advantageous by the fact that it has high retardancy to flame, especially preventive characteristics drip. Another object of the present invention to provide a polycarbonate resin composition which not only has high impact resistance and high moldability, but is also advantageous in that it has high antistatic properties.
The above and other objects, features and advantages of the invention will become apparent from the following detailed and appended claims description in conjunction with the accompanying drawings. Figure 1 is a diagram showing the system used for producing a polycarbonate as examples.
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Numerals assigned in connection with a first type of polymerization vessel vertical agitation type A. Numerals assigned in connection with a first container polymerization vertical agitation type B. Numerals assigned in connection with a second polymerization vessel vertical agitation type C. Numerals assigned in connection with third polymerization vessel vertical agitation type D.
Numerals assigned in connection with a polymerizer degradation “fall polymerizer” wetting yarns. Numerals assigned in connection with a second wetting polymerizer degradation threads. Entrada para un material polimerizable ve -1A, 1B: Input for an initial polymerizable material. Input for a prepolymer. First containers A and B of polymerizers vertical agitation type.
Second polymerizer vessel vertical agitation type C. Third type polymerizer vessel vertical agitation D. Salida -5A, 5B, 5C, 5D: Agitador -6A, 6B, 6C, 6D: Bomba de transferencia 7C, 7D, Placa perforada A, B-: Bomba de transferencia A-: Bomba de descarga B-: Main body of wetting polymerizer degradation thread. According to the present invention there is provided a compound of polycarbonate resin, comprising: A 5 to 95 parts by weight of a polycarbonate resin comprising a plurality of aromatic polycarbonate main chains comprising each independently repeating units represented by the following formula 1: B 5 to 95 parts by weight of a thermoplastic resin reinforced with rubber which comprises a graft copolymer which is obtained by a method comprising grafting on a rubber polymer at least one copolymerizable vinyl compound graft with the rubber polymer.
For easy understanding of the present invention are indicated below the essential features and various embodiments thereof: Un compuesto de resina de policarbonato, que comprende: A compound of polycarbonate resin, comprising: A 5 to 95 parts by weight of a polycarbonate resin comprising a plurality of aromatic polycarbonate main chains, each of which comprises repeating units, each is presented by the following formula 1: B 5 to 95 parts by weight of a resin reinforced thermoplastic a gum comprising a graft copolymer obtained by a method comprising grafting on a rubber polymer at least one copolymerizable vinyl compound graft with the rubber polymer.
The compound of resin according to item 1 above, wherein: The resin composition according to any of the above 1 to 3, wherein the heterounit II is present in an amount of 0. The resin composition according to any of the above 1 to 4, wherein the polycarbonate resin A is produced from an aromatic dihydroxy compound and a carbonic diester by transesterification.