| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | 개선된 내열성과 성형성을 갖는 폴리아세탈 중합체의 제조방법 | KR1019840005606 | 1984-09-14 | KR1019880000658B1 | 1988-04-20 | 나까쓰지히로시; 오가다쓰네요시; 아사노다께시 |
| A polyacetal polymer is prepd. by melting a crude polyacetal polymer or copolymer contg. oxymethylene gp. bonded to main chain of the molecular and heating it in an insoluble liq. medium at 80≦̸C or more thus maintaining the heterogeneous system. The crude polymer is pref. a polyacetal copolymer contg. an oxyalkylene gp. and at least two adjacent carbon atoms in the main chain. The crude polymer is melted in the presence of a stabilizer and/or alkaline material and 10wt.% or less of water. The polyacetal polymer has an improved heat stability and mouldability. | ||||||
| 42 | ISOHEXIDE-DIACETAL BASED POLYMERS AND A PROCESS THEREOF | PCT/IN2014000318 | 2014-05-09 | WO2014181358A9 | 2015-02-12 | CHIKKALI SAMIR HUJUR; RAJPUT BHAUSAHEB SHIVAJI |
| The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. Also disclosed herein is the synthesis of isohexide based monomers and their polymers from renewable resources which are potentially degradable. Further, the present invention disclose a process for the synthesis of isohexide based copolymers via copolymerization of isohexide based monomers and long chain diols, which are degradable. | ||||||
| 43 | ACETAL METATHESIS POLYMERIZATION | PCT/US2012029355 | 2012-03-16 | WO2012129070A3 | 2012-12-27 | MILLER STEPHEN ALBERT; PEMBA ALEXANDER GREY |
| A method of preparing a polyacetal comprising polymerization of a mixture comprising a plurality of at least one bis-acetal monomer in the presence of an acid catalyst that promotes the metathesis of the acetal units. The bis-acetal can be formed from an acid catalyzed exchange between a mono-acetal monomer with a diol. The formation of the bis- acetal and the polyaeetal can be carried out simultaneously. The diol can be isolated from a biorenewable source and the ultimate polyaeetal is a degradable or biodegradable polymer. | ||||||
| 44 | ISOHEXIDE-DIACETAL BASED POLYMERS AND A PROCESS THEREOF | PCT/IN2014000318 | 2014-05-09 | WO2014181358A3 | 2014-12-31 | CHIKKALI SAMIR HUJUR; RAJPUT BHAUSAHEB SHIVAJI |
| The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. Also disclosed herein is the synthesis of isohexide based monomers and their polymers from renewable resources which are potentially degradable. Further, the present invention disclose a process for the synthesis of isohexide based copolymers via copolymerization of isohexide based monomers and long chain diols, which are degradable. | ||||||
| 45 | METHOD FOR PROCESSING PARTICULATE RAW POLYOXYMETHYLENE | PCT/EP2012064767 | 2012-07-27 | WO2013020830A3 | 2013-05-30 | DEININGER JUERGEN; DEMETER JUERGEN; HAEFFNER RUEDIGER; SCHULZ RALF; STAMMER ACHIM |
| The invention relates to a method for processing particulate raw polyoxymethylene, comprising the following steps: (a) adding the particulate raw polyoxymethylene to an extraction column (13), wherein the extraction column (13) is operated at a pressure in the range from 1 to 6 bar; (b) adding a polar extracting agent to the extraction column (13) at a temperature in the range from 95 to 140 °C and a pressure in the range from 1 to 6 bar, wherein 10 to 1000 ppm, in relation to the added quantity of polar extracting agent, of a buffer substance that buffers in the pH range from 7.5 to 11.5 is added to the extraction column. | ||||||
| 46 | VERFAHREN ZUR HERSTELLUNG VON POLYOXYMETHYLEN | EP14727186.0 | 2014-05-26 | EP3004191B1 | 2017-07-12 | POTTIE, Laurence; DEMETER, Jürgen; HERMANT, Marie-Claire |
| 47 | METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER | EP14826304.9 | 2014-05-23 | EP3023445A1 | 2016-05-25 | HIRANO, Tomoyuki; ITO, Akira |
Provided is a method for producing an oxymethylene copolymer continuously and with high polymerization yield, whereby it becomes possible to improve heat stability and the formaldehyde generation amount while keeping MD resistance and folding endurance. Provided is a method for producing an oxymethylene copolymer, which comprises the steps of: carrying out a copolymerization reaction of a monomer raw material comprising trioxane and 1,3-dioxolane in an amount of 7.0 to 22 mass% relative to the amount of trioxane in the presence of boron trifluoride in an amount of 0.03 to 0.10 mmol relative to 1 mol of trioxane and sterically hindered phenol in an amount of 0.006 to 2.0 mass% relative to the amount of trioxane; and adding a polymerization terminator to a reaction system at the point of time at which the polymerization yield of the copolymer becomes 92% or more to terminate the polymerization. |
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| 48 | ISOHEXIDE-DIACETAL BASED POLYMERS AND A PROCESS THEREOF | EP14739247.6 | 2014-05-09 | EP2994494A2 | 2016-03-16 | CHIKKALI, Samir Hujur; RAJPUT, Bhausaheb Shivaji |
| Potentially degradable isohexide based compounds and their polymers, derived from renewable resources, are described. Degradable isohexide-based monomers and polymers obtained from renewable resources are also described. Finally, processes for synthesizing such degradable polymers via copolymerization of the isohexide-based monomers and long chain diols are disclosed. | ||||||
| 49 | PRODUCTION METHOD FOR POLYACETAL COPOLYMER | EP13858778.7 | 2013-10-25 | EP2927254A1 | 2015-10-07 | MASUDA, Eiji; MONMA, Tomohiro; HORIGUCHI, Tadahiro |
Provided is a production method for a polyacetal copolymer that makes deactivation of a catalyst simple and efficient and that achieves a high polymerization yield and high quality using equipment that does not require a cleaning step and a process that involves a simple operation technique. The production method for a polyacetal copolymer uses trioxane as a main monomer (a) and a cyclic ether and/or a cyclic formal having at least one carbon-carbon bond as a comonomer (b). In the production method, a predetermined heteropoly acid is used as a polymerization catalyst (c) to perform copolymerization, a predetermined salt (d) is added to the reaction product, melt kneading processing is performed, and the polymerization catalyst (c) is deactivated. It is preferable that the heteropoly acid be selected from among phosphomolybdic acid, phosphotungstic acid, and the like. It is preferable that the salt (d) be selected from among sodium carbonate, sodium bicarbonate, sodium formate, and the like. |
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| 50 | VERFAHREN ZUR HERSTELLUNG VON POLYOXYMETHYLENEN | EP06777740.9 | 2006-07-13 | EP1913045A1 | 2008-04-23 | BLINZLER, Marko; ZÖLLNER, Knut; SCHWITTAY, Claudius; ASSMANN, Jens |
| The invention relates to a method for producing polyoxymethylene copolymers (POM) in the following manner: a) a reaction mixture containing suitable principal monomers and comonomers in addition to a polymerisation initiator and optionally a chain transfer agent is polymerised; b) a deactivator is added; and c) the residual monomers are removed. The invention is characterised in that at each stage of the method, the maximum quantity of compounds in the reaction mixture, said compounds having a melting point at 1013 hPa of below 60 °C, is 0.1 wt. %, not including the POM, monomers, comonomers, polymerisation initiators, deactivators and chain transfer agent. | ||||||
| 51 | POLYOXYMETHYLENE COPOLYMER AND MOLDED ARTICLE THEREOF | EP02713195.2 | 2002-03-26 | EP1275671B1 | 2007-06-06 | NAKAMURA, Takahiro; FURUKAWA, Masanori; OKAMURA, Akira; NAKAYA, Daigo; MASUMOTO, Isamu |
| A polyoxymethylene copolymer obtained by copolymerizing trioxane with 1,3-dioxolane in a molar ratio of 100/(8-20), characterized by having the following properties: (i) the crystallization time at 143 °C is 10 to 2,000 seconds; (ii) the number of cycles in a folding endurance test is 30 to 1,000; and (iii) the thermal stability in residence is 40 minutes or longer. Also provided is a molded article formed from the copolymer. The polyoxymethylene copolymer is excellent in folding endurance and thermal stability and has satisfactory moldability. | ||||||
| 52 | POLYACETAL COPOLYMER AND METHOD FOR PRODUCING THE SAME | EP00936518.0 | 2000-03-14 | EP1167409B1 | 2007-03-28 | Tajima, Yoshihisa; Okawa, Hidetoshi |
| A polyacetal copolymer which is obtained by a method which comprises copolymerizing (a) 100 parts by weight of trioxan, (b) 0.05 to 20 parts by weight of a cyclic ether compound copolymerizable with trioxan and (c) 0.001 to 10 parts by weight of a monofunctional glycidyl compound, wherein the monofunctional glycidyl compound (c) has a chlorine content of 0.3 wt % or less. The polyacetal copolymer has excellent impact resistance, rigidity, resistance to creep and the like as inherent properties to the polymer, and also exhibits an improved thermal stability which results in the improved flowability upon molding and the excellent moldability of the polymer. | ||||||
| 53 | BLOCK COPOLYMER HAVING POLYMER SEGMENT DERIVED FROM OXAZOLINE | EP00939170.7 | 2000-06-27 | EP1219661B1 | 2005-03-02 | KATAOKA, Kazunori; NAGASAKI, Yukio; AKIYAMA, Yoshitsugu |
| 54 | NOVEL POLYACETAL (CO)POLYMERS | EP02749341 | 2002-07-23 | EP1413590A4 | 2004-09-08 | TAJIMA YOSHIHISA; NAKAO HIROAKI; KAWAGUCHI KUNIAKI |
| Polymers which are liquid in spite of their being high−molecular substances, exhibit both high affinity for water and excellent heat resistance, and are suitable for heat media, lubricants, and so on. That is, polyacetal (co)polymers liquid at room temperature, which are produced by (co)polymerizing (A) 75 to 100 % by mole of 1,3−dioxolane with (B) 25 to 0 % by mole of trioxane and have total terminal group contents of 15 to 300 mmol/kg and terminal hemiformal group contents of 80 mmol/kg or below. | ||||||
| 55 | POLYACETAL COPOLYMER | EP00978071 | 2000-12-01 | EP1270629A4 | 2003-07-16 | OKAWA HIDETOSHI; YAMAMOTO KAORU |
| A resin material which has improved rigidity while retaining excellent properties inherent in a polyacetal resin, such as appearance, sliding properties, and thermal stability. The polyacetal copolymer is obtained by copolymerizing (A) 100 parts by weight of trioxane with (B) 0.0005 to 2 parts by weight of (B-1) a compound having three or more glycidyl groups per molecule or (B-2) a compound having two or more epoxy groups per molecule and (C) 0 to 20 parts by weight of a cyclic ether compound copolymerizable with trioxane, and has a total terminal group content of 15 to 150 mmol/kg when the ingredient (B) was the compound (B-2). | ||||||
| 56 | BRANCHED POLYACETAL RESIN COMPOSITION | EP00978070.1 | 2000-12-01 | EP1270667A1 | 2003-01-02 | KAWAGUCHI, Kuniaki; OKAWA, Hidetoshi; TAJIMA, Yoshihisa |
To offer a resin material in which various properties such as excellent appearance and rigidity inherent to a polyacetal resin are maintained and a weather (light) resistance is improved. That is, a branched polyacetal resin composition comprirsing 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), 0.01 to 5 parts by weight of a weather (light) resistant stabilizer (B) and 0.01 to 5 parts by weight of a hindered amine substance (C) :
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| 57 | Acrolein freisetzende Copolymere | EP97101161.4 | 1997-01-25 | EP0792895B1 | 2001-05-16 | Werle, Peter, Dr.; Trageser, Martin; Krimmer, Hans-Peter, Dr.; Kunz, Franz-Rudolf |
| 58 | POLYOXYMETHYLEN-FORMMASSE MIT VERBESSERTER VERARBEITUNGSSTABILITÄT UND VERMINDERTER EMISSIONSNEIGUNG | EP99916905.5 | 1999-04-01 | EP1090051A1 | 2001-04-11 | DISCH, Stefan; ECKARDT, Peter; MÜCK, Karl-Friedrich; REUSCHEL, Gerhard; REISSMANN, Lothar |
| Moulding materials made of linear polyoxymethylene copolymers with essentially oxymethylene units and oxyethylene units as structural units in the polymer chain, whereby the proportion of oxyethylene units in the structural units of the polymer chain amounts to 1.5 - 2.5 mol %. The inventive moulding materials and moulded articles produced therefrom and optionally coloured exhibit high stability and emit extremely low quantities of formaldehyde and residual monomers. At the same time mechanical properties are high, so that the usual fields of application and processing methods can be utilized without any restrictions. | ||||||
| 59 | Acrolein freisetzende Copolymere | EP97101161.4 | 1997-01-25 | EP0792895A1 | 1997-09-03 | Werle, Peter, Dr.; Trageser, Martin; Krimmer, Hans-Peter, Dr.; Kunz, Franz-Rudolf |
Acroleinpolymer, hergestellt aus Acrolein und einem oder mehreren mehrwertigen Alkoholen, gekennzeichnet durch |
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| 60 | POLYOXYMETHYLENE COPOLYMER AND PRODUCTION THEREOF | EP91902766.4 | 1991-01-17 | EP0504405B1 | 1996-01-24 | MORISHITA, Hirohisa, 67-5, Nishi-Naka-Shinden; MATSUZAKI, Kazuhiko, 368-9, Yoshioka |
| A polyoxymethylene copolymer composed of oxymethylene and oxyalkylene units, having a molecular weight of 10,000 to 200,000, containing 0.07 to 0.5 mole % of the oxyalkylene units based on the oxymethylene units, having a ratio of the absorbance of the terminal formate group to that of the methylene group of 0.025 or less as determined by infrared spectroscopy, and excellent in stability and mechanical properties. | ||||||
