专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JPH06313036A METHOD FOR STABILIZING FLAME RETARDANT 失效
公开(公告)号：JPH06313036A
公开(公告)日：1994-11-08
申请号：JP10254793
申请日：1993-04-28
申请人： TEIJIN CHEMICALS LTD
发明人： TAHIRA YASUHISA
IPC分类号： C08G64/10 , C08G64/00 , C08K5/00 , C08K5/10 , C08K5/11 , C08L69/00 , C09K21/14
摘要： PURPOSE:To obtain a halogenated aromatic carbonate-type flame retardant excellent in heat resistance and heat stability and free from deterioration of pigment in melting by blending aliphatic esters in a specific ratio. CONSTITUTION:This flame retardant is stabilized by blending (A) 100 pts.wt. halogenated aromatic carbonate-type flame retardant of the formula [A and B are 1-10C (substituted)alkylene, alkylidene, etc.; X1 and X2 are halogen; R1 and R2 are 1-3C alkyl; (m) is 1 or 2; (n) is 0, 1 or 2; (p) is integer of 1-20; (q) is integer of 0-10; (p+q)>=20 and (q)

82. 发明专利

JPH06305044A OPTICAL MOLDED ITEM 失效
公开(公告)号：JPH06305044A
公开(公告)日：1994-11-01
申请号：JP10108493
申请日：1993-04-27
申请人： TEIJIN CHEMICALS LTD
发明人： TOKUDA TOSHIMASA
IPC分类号： B29D11/00 , B29K69/00 , C08G63/64 , C08G64/00 , C08G64/10 , C08G64/14 , G02B6/00 , G02B6/12 , G11B7/24 , G11B7/253
摘要： PURPOSE:To keep excellent transparency and mechanical properties and to improve photoelastic const., Abbe's number and melt-flow characteristics by using a monohydric phenol with a specified structure as a terminator and reacting a carbonate precursor with a bihydric phenol. CONSTITUTION:The title molded item is a molded item prepd. by molding a polycarbonate resin obtd. by reacting a bihydric phenol selected from 2,2-bis(4- hydroxyphenyl)propane etc., and 1,3-bis (4-hydroxyphenyl)-5,7- dimethyladamantane, a carbonate precursor and a reaction product of a substd. or unsubstd. hydroxyalkylalcohol and a lactone of formula I wherein R is a 1-10C aliph. group which may contain an ether group; R' is a 1-10C aliph. group or a halogen; m is an integer of 4-20; n is an integer of 1-100; P is an integer of 0-4.

83. 发明专利

JPH0668022B2 失效
公开(公告)号：JPH0668022B2
公开(公告)日：1994-08-31
申请号：JP28728885
申请日：1985-12-20
IPC分类号： C08G64/06 , C08G64/00 , C08G64/10 , C08G64/14 , C08G64/22

84. 发明专利

JPH06145492A AROMATIC POLYCARBONATE RESIN COMPOSITION 失效
公开(公告)号：JPH06145492A
公开(公告)日：1994-05-24
申请号：JP31560292
申请日：1992-11-02
申请人： TEIJIN CHEMICALS LTD , FURUKAWA ELECTRIC CO LTD
发明人： TOKUDA TOSHIMASA , NISHIGUCHI MASAMI
IPC分类号： C08G64/10 , C08G64/00 , C08K3/00 , C08K5/524 , C08L69/00 , G11B7/253
摘要： PURPOSE:To provide an aromatic polycarbonate resin composition especially having excellent heat-resistance and thermal stability and exhibiting high transparency and moldability. CONSTITUTION:The objective aromatic polycarbonate resin composition is produced by compounding a phosphite-type antioxidant to an aromatic polycarbonate copolymer having a specific molecular weight and composed of 50-95mol% of bisphenol A and 50-5mol% of 9,9-bis(4-hydroxyphenyl)fluorene.

85. 发明专利

JPH06145331A PRODUCTION OF AROMATIC POLYCARBONATE 失效
公开(公告)号：JPH06145331A
公开(公告)日：1994-05-24
申请号：JP29442092
申请日：1992-11-02
申请人： TEIJIN CHEMICALS LTD
发明人： TOKUDA TOSHIMASA , NISHIGUCHI MASAMI
IPC分类号： C08G64/10 , C08G64/00 , C08G64/20
摘要： PURPOSE:To obtain the title polycarbonate excellent in heat resistance, transparency and moldability by reacting an alkaline aqueous solution of a dihydric phenol based on a specified compound with phosgene in the presence of an organic solvent under specified conditions. CONSTITUTION:An alkaline aqueous solution of a dihydric phenol based on 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoro-propane having a light transmittance of 90% or above at 400nm when measured on a filtrate prepared by drying the compound at 70+ or -10 deg.C in a vacuum of 10mmHg for 10hr, forming a 20wt.% ethanolic solution of the compound and filtering the solution through a filter with a pore diameter of 0.1mum with a quartz cell having an optical path of 250mm and an impurity content of 0.02wt.% or below as analyzed chromatographically, is reacted with 1.15-1.20mol, per mol of the dihydric phenol, of phosgene in an organic solvent (e.g. methylene chloride) at 20 deg.C or below.

86. 发明专利

JPH0622586B2 失效
公开(公告)号：JPH0622586B2
公开(公告)日：1994-03-30
申请号：JP20377988
申请日：1988-08-18
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： MASUMOTO MITSUHIKO , ASAO TOSHIAKI , KAWAHIGASHI TERUO
IPC分类号： A61L2/10 , A61L31/00 , C08G64/00 , C08G64/10 , C08L69/00

87. 发明专利

JPH05132551A NEW POLYCARBONATE RESIN 失效
公开(公告)号：JPH05132551A
公开(公告)日：1993-05-28
申请号：JP29567091
申请日：1991-11-12
申请人： MITSUBISHI PETROCHEMICAL CO
发明人： YOKOYAMA MASUZO , YOSHITOKU HIROO , TAKANO JUNSHI
IPC分类号： C08G64/04 , C08G64/00 , C08G64/10
摘要： PURPOSE:To provide a polycarbonate resin which comprises specific repeating structural units, has a specified number-average mol.wt., and is excellent in heat resistance and melt flowability. CONSTITUTION:A polycarbonate resin comprising repeating structural units of formula I and having a number-average mol.wt. of 5,000-50,000, or one comprising 5mol% or higher the units of formula I and 5-95mol% repeating structural units of formula II [wherein A is a single bond, a 1-15C (substd), linear, branched, or cyclic, divalent hydrocarbon group, or a divalent group selected from the group consisting of O, S, CO, SO, and SO2; X and Y are each halogen, or a 1-6C hydrocarbon group; and (p) and (q) are each 0-2) and having a number- average mol.wt. of 5,000-50,000 is provided. The polycarbonate is excellent in heat resistance and melt flowability.

88. 发明专利

JPH059372A AROMATIC POLYCARBONATE RESIN COMPOSITION 失效
公开(公告)号：JPH059372A
公开(公告)日：1993-01-19
申请号：JP18588191
申请日：1991-07-01
申请人： TEIJIN CHEMICALS LTD
发明人： TOKUDA TOSHIMASA
IPC分类号： C08G64/10 , C08G64/00 , C08L69/00
摘要： PURPOSE:To obtain a resin composition having transparency and high refractive index and suitable for optical use, especially for lens by compounding an aromatic polycarbonate resin with a specific amount of a specific halogenated polycarbonate. CONSTITUTION:The objective resin composition is produced by compounding (A) an aromatic polycarbonate resin with (B) 20-80wt.%, preferably 25-60wt.% (based on the total composition) of a halogenated polycarbonate composed mainly of the recurring unit of formula (Z is single bond, alkylidene, cycloalkylidene, phenyl, substituted alkylidene, sulfone, sulfide or oxide; X is halogen) and having a specific viscosity of

89. 发明专利

JPH04268328A BRANCHED POLYCARBONATE 失效
公开(公告)号：JPH04268328A
公开(公告)日：1992-09-24
申请号：JP4859791
申请日：1991-02-22
申请人： IDEMITSU PETROCHEMICAL CO
发明人： KUZE SHIGEKI , KOMATSU TAKASHI
IPC分类号： C08G64/00 , C08G64/10 , C08G64/14
摘要： PURPOSE:To obtain a branched polycarbonate improved in flame retardancy, mechanical properties and melt properties (blow moldability) by specifying the branched structure, the repeating units and the viscosity-average molecular weight. CONSTITUTION:A mixture of a branching agent (a) of formula I (wherein R is H or 1-5C alkyl; and R to R are each R or halogen) with an alkaline aqueous solution (b) of (tetrahalo)bisphenol A and an alkaline aqueous solution (c) of bisphenol A in a solution in the presence of a catalyst is reacted with phosgene (d) to obtain a polycarbonate oligomer solution. This solution is mixed with the bisphenol A, the solvent, component (b) and the catalyst and reacted to obtain a branched polycarbonate having 0.1-2.0mol% branched structure derived from component (a) and repeating units of formulas II and III (wherein X and X are each halogen), terminated with a trihalogenoxy group of formula IV (wherein X to X are each X ), and having a viscosity-average molecular weight of 10000-50000 and a content of units of formula III of 10mol%.

90. 发明专利

JPH04213322A AROMATIC POLYCARBONATE CONTAINING SPECIAL FLUORINATED BISPHENOL COMPONENT AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH04213322A
公开(公告)日：1992-08-04
申请号：JP1688791
申请日：1991-01-18
申请人： BAYER AG
发明人： BORUFUGANGU EEBERUTO , MIHIYAERU NEGERE , GERUHARUTO FUENHOFU
IPC分类号： C08G64/10 , C08G64/00 , C08G64/08 , C08G64/14 , C08G64/20 , C08G64/22 , G02B1/04

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式