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61. 发明专利

JP2000136242A PRODUCTION OF AROMATIC-ALIPHATIC COPOLYCARBONATE 失效
公开(公告)号：JP2000136242A
公开(公告)日：2000-05-16
申请号：JP31081998
申请日：1998-10-30
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： ISAHAYA SADANORI , NAGAI SATOSHI , TSUNODA TAKASHI
IPC分类号： G02C7/02 , C08G64/16 , C08G64/30 , G02B1/04
摘要： PROBLEM TO BE SOLVED: To obtain an aromatic-aliphatic copolycarbonate having excellent impact and heat resistances, a high Abbe number and a low photoelastic constant, excellent in color tone and useful as an optical material or the like by adopting a specific cyclohexane. SOLUTION: When performing the transesterification of (A) an 1,1-bis-(4- hydroxyphenyl)cyclohexane of formula I with both (B) a tricyclo(5.2.1.02.6) decanedimthanol of formula II and (C) a carbonic diester, the content of an alkali metal or an alkaline earth metal in the component A is

62. 发明专利

JP2000007777A PREPARATION OF AROMATIC-ALIPHATIC COPOLYMER POLYCARBONATE 失效
公开(公告)号：JP2000007777A
公开(公告)日：2000-01-11
申请号：JP17141298
申请日：1998-06-18
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KONDO OSAMU , NAGAI SATOSHI , SASAKI MAKOTO , FUJIMORI TAKAYASU
IPC分类号： C08G64/16 , C08G64/30
摘要： PROBLEM TO BE SOLVED: To obtain a resin having an excellent impact resistance, an excellent heat resistance, a high Abbe number, a low photoelasticity constant and an excellent color tone by polycondensing the mixture of an aromatic dihydroxy compound, an aliphatic dihydroxy compound and a diester carbonate continuously in a horizontal reaction vessel having specific mixing blades and in a horizontal mixing polymerization vessel. SOLUTION: An aromatic dihydroxy compound of formula I, an aliphatic dihydroxy compound of formula II and a diester carbonate are used. A polymer having a weight average molecular weight of 30,000-60,000 is obtained by polycondensing a melt of the monomer mixture in at least one horizontal mixing polymerization vessel having a vertical rotation axis with mixing blades and then a polycarbonate having a weight average molecular weight of not less than 70,000 is obtained by carrying out the polycondensation further in at least one horizontal polymerization vessel having a horizontal rotation axis with mixing blades which are mutually discontinuous and have L/D of 1-15. In the formulas, X is formula III or IV; R1 and R2 are each hydrogen, a 1-10C alkyl group or a halogen; m and n are each 0-4; and R3 and R4 may bond each other to form a ring; R5 to R8 are each hydrogen or a monovalent 1-10C alkyl group.

63. 发明专利

JP2000001536A PRODUCTION OF AROMATIC-ALIPHATIC COPOLYCARBONATE 失效
公开(公告)号：JP2000001536A
公开(公告)日：2000-01-07
申请号：JP16520198
申请日：1998-06-12
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： NAGAI SATOSHI , YOSHIDA SHU , SASAKI MAKOTO
IPC分类号： C08G64/28
摘要： PROBLEM TO BE SOLVED: To obtain a copolycarbonate having a low photoelasticity and excellent impact resistance, refractive index, transparency, heat resistance, and hue by polycondensing an aromatic dihydroxy compound, an aliphatic dihydroxy compound and a carbonic diester under heating in a molten state. SOLUTION: 90-10 mol.% aromatic dihydroxy compound of formula I (wherein X is -O-, -S-, or a group of any one of formulae II to V; R3 and R4 are each H, a 1-10C alkyl, or phenyl; R1 and R2 are each H, a 1-10C alkyl, or a halogen; and m and n are each 0-4), 90-10 mol.% aliphatic dihydroxy compound represented by formula VI (wherein R5 to R8 are each H or a 1-10C monovalent alkyl) and having a free chlorine content of 5 ppm or below, and 0.97-1.2 mol, desirably, 0.99-1.10 mol, per mol of the total of the former two compounds, of a carbonic diester are reacted with each other at 120-260 deg.C for 0-5 hr in the presence of a basic compound catalyst, and the resultant reaction mixture is polycondensed at 200-300 deg.C in a vacuum of 1 mmHg or below to obtain an aromatic-aliphatic copolycarbonate having a weight-average molecular weight of 30,000-200,000.

64. 发明专利

JPH11349676A AROMATIC-ALIPHATIC COPOLYMERIZED POLYCARBONATE RESIN 失效
公开(公告)号：JPH11349676A
公开(公告)日：1999-12-21
申请号：JP16217698
申请日：1998-06-10
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： FUJIMORI TAKAYASU , TAKAKUWA KYOHEI , KONDO OSAMU , NAGAI SATOSHI
IPC分类号： C08G64/16
摘要： PROBLEM TO BE SOLVED: To obtain at a low cost the subject resin exhibiting excellent resistance to impact and to heat and having a high Abbe number and a low photoelastic constant by polycondensating a dihydroxy compound with a carbonic acid diester in a molten state under heat. SOLUTION: The objective polycarbonate resin is obtained by polycondensating 2,2-bis(4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl) cyclohexane and tricyclo(5.2.1.0 , )decanedimethanol with a carbonic acid diester in a molten state under heat. The polycarbonate comprises a constituent unit of formula I, a constituent unit of formula II and a constituent unit of formula III, the molar fraction of each constituent unit relative to the total mole number of all of the constituent units per unit weight being at least 5 mole % and less than 90 mole %, and has a glass transition temperature of at least 100 deg.C, preferably at least 110 deg.C. The wt. average mol.wt. thereof is desirably 30,000-200,000.

65. 发明专利

JP2576584B2 失效
公开(公告)号：JP2576584B2
公开(公告)日：1997-01-29
申请号：JP10279588
申请日：1988-04-27
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： TOGO SHIZUO , SHIMAOKA GORO , NAGAI SATOSHI
IPC分类号： C08L67/02 , C08K3/00 , C08K5/52 , C08K5/527 , C08L67/00 , C08L69/00

66. 发明专利

JPH07330848A PRODUCTION OF OXYMETHYLENE COPOLYMER HAVING EXCELLENT THERMAL STABILITY OR THE LIKE 失效
公开(公告)号：JPH07330848A
公开(公告)日：1995-12-19
申请号：JP13037894
申请日：1994-06-13
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： AMETANI SHOICHI , KONDO TAKAO , MIZUTANI YOSHIHEI , NAGAI SATOSHI , NAKATANI DAIGO , ABE JUNICHI , YOKOYAMA KATSUJI
IPC分类号： C08G2/12 , C08G2/18
摘要： PURPOSE:To provide a method for producing an oxymethylene copolymer, having excellent heat stability and high crystallization rate, by using 1,3-dioxolan and ethylene oxide as comonomers. CONSTITUTION:In copolymerlzlng trioxan with 1,3-dioxolan and ethylene oxide by using boron trifluoride or its coordination compound as a catalyst, 1-8mol % based on trioxan of the total amount of 1,3-dioxolan and ethylene oxide is used and 1-99mol % of 1,3-dioxolan is used based on 100mol%, of the total amount of 1,3-dioxolan and ethylene oxide to provide a method for producing an oxymethylene copolymer.

67. 发明专利

JPH06279652A POLYACETAL RESIN COMPOSITION 失效
公开(公告)号：JPH06279652A
公开(公告)日：1994-10-04
申请号：JP6792193
申请日：1993-03-26
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： U KEN , NAGAI SATOSHI , SHIMIZU KENICHI , OKUZONO TOSHIAKI
IPC分类号： C08K5/07 , C08K5/09 , C08K5/18 , C08K5/3435 , C08K5/3495 , C08L59/00
摘要： PURPOSE:To obtain a polyacetal resin composition having extremely excellent weathering (light) resistance, not causing problems such as occurrence of eye mucus from a nozzle during molding, change of color resulting from light deterioration and flow mark on the surface of a molded article. CONSTITUTION:100 pts.wt. of a polyacetal resin is mixed with one of 0.10-1.50 pts.wt. of a light stabilizer, 0.10-1.50 pts.wt. of a UV rays absorber, 0.10-3.0 pts.wt. of polyethylene glycol, 1.0-3.0 pts.wt. of a polyamide and 1.0-3.0 pts.wt. of an ethylene.vinyl alcohol copolymer and uniformly blended in a molten state. A polyacetal resin composition having extremely excellent weathering (light) resistance, not causing problems such as occurrence of eye mucus from a nozzle during molding, color change resulting from light deterioration and flow mark on the surface of a molded article is obtained.

68. 发明专利

JPH0622587B2 失效
公开(公告)号：JPH0622587B2
公开(公告)日：1994-03-30
申请号：JP21854588
申请日：1988-09-02
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： MIZUTANI MAKOTO , NAGAI SATOSHI
IPC分类号： A61L29/00 , A61L31/00 , C08G64/00 , C08G64/10 , C08L69/00

69. 发明专利

JPH0649320A POLYACETAL COMPOSITION FOR MOLDING 失效
公开(公告)号：JPH0649320A
公开(公告)日：1994-02-22
申请号：JP41508190
申请日：1990-12-27
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KIMURA MASAHARU , MIMURA HIROSHI , NAGAI SATOSHI , OCHIAI KAZUAKI , SHIBATA AKIYOSHI , KAWADA TOSHIKATSU
IPC分类号： C08L59/00
摘要： PURPOSE:To obtain a self-lubricating compsn. excellent in abrasion resistance, friction properties, noise prevention, etc., by mixing polyacetal with a polyethylene wax consisting of an ethylene/alpha-olefin copolymer or its modification. CONSTITUTION:The polyacetal compsn. for molding is prepd. by mixing 99.9-75 pts.wt. polyacetal with 0.1-25 pts.wt. polyethylene wax consisting of an ethylene/alpha-olefin copolymer (e.g. an ethylene/propylene copolymer) or its modification. A pref. polyethylene wax is one which has a number-average mol.wt. of 1,000-10,000, and the modification is one having polar group such as carboxyl groups introduced by oxidation or by modification with an acid. The compsn. is suitable as the material of a sliding member such as a gear, a bearing, etc.

70. 发明专利

JPH02232259A RADIATION-STERILIZABLE POLYCARBONATE MOLDING 失效
公开(公告)号：JPH02232259A
公开(公告)日：1990-09-14
申请号：JP5209489
申请日：1989-03-06
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： MIZUTANI MAKOTO , NAGAI SATOSHI
IPC分类号： A61L2/08 , C08L69/00
摘要： PURPOSE:To obtain a polycarbonate molded item exhibiting little yellowing caused by irradiation with radiation in air or without oxygen by molding a polycarbonate resin compsn. prepd. by compounding an arom. polycarbonate contg. a specified constitutional unit with a thioether. CONSTITUTION:The title molded item is obtd. by molding a resin compsn. prepd. by compounding an arom. polycarbonate polymer or oligomer contg. a constitutional unit derived from a halogenated bisphenol in the molecule (e.g. a copolymerized polycarbonate resin of bisphenol A and tetrabromobisphenol A) and a thioether of the formula [wherein R1 and R2 are each a 1-10C alkylene; n is a positive number of 1-100 on an average; X1 and X2 are each H, OH, COOH, OR, COOR (wherein R is a 1-20C alkyl)] (e.g. 2,2'-thiodiethanol). As said molded item exhibits excellent radiation resistance and little yellowing against gamma-ray in air and without oxygen, it is useful for artificial dialyzers, artificial lungs, blood transfusion sets, etc., which are radiation-sterilized.

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