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41. 发明专利

JPH02215856A MANUFACTURE OF LOWLY ODOROUS POLYPHENYLENE ETHER/POLYSYRENE 失效
公开(公告)号：JPH02215856A
公开(公告)日：1990-08-28
申请号：JP33245189
申请日：1989-12-20
申请人： GEN ELECTRIC
发明人： JIYON PIITAA BEINBISHIYASU , UIRIAMU MITSUCHIERU BANTEINGU , AREGUZANDOROSU HATSUSON , SUUZAN JIEIN HASAUEI , UIRIAMU YUUJIIN PEKAKU , JIYON POORU SUKIRUBETSUKU
IPC分类号： C08L25/04 , C08G65/38 , C08G65/44 , C08G65/46 , C08L71/00 , C08L71/12

42. 发明专利

JPH02215834A IMPROVED METHOD FOR MANUFACTURE OF LOWLY ODOROUS POLYPHENYLENE ETHER RESIN 失效
公开(公告)号：JPH02215834A
公开(公告)日：1990-08-28
申请号：JP33245289
申请日：1989-12-20
申请人： GEN ELECTRIC
发明人： JIYON PIITAA BEINBISHIYASU
IPC分类号： C08G65/38 , C08G65/44 , C08G65/46

43. 发明专利

JPH02166101A PURIFICATION OF POLYMER 失效
公开(公告)号：JPH02166101A
公开(公告)日：1990-06-26
申请号：JP31854288
申请日：1988-12-19
申请人： TOKUYAMA SODA KK
发明人： SHIMAZAKI KAZUHIRO , TAKEUCHI HITOMI , TAKADA KUNIAKI
IPC分类号： C08G65/46 , C08F6/00 , C08F20/10 , C08F20/14 , C08G63/82 , C08G63/84 , C08G63/88 , C08G63/90 , C08G65/02
摘要： PURPOSE:To facilitate the removal of a porphyrin aluminum complex from a polymer containing it to thereby prevent the discoloration of the polymer by bringing the polymer into contact with active carbon. CONSTITUTION:A polymer containing a porphyrin aluminum complex is brought into contact with active carbon. The porphyrin aluminum complex which can be desirably removed is one represented by formula I [wherein R1 to R12 are each H or a (substituted) hydrocarbon group; each of pairs R3 and R4, R6 and R7, R9 and R10, and R12 and R1 may be combined together to form a ring; and X is H, a halogen atom, an alkyl group, an alkoxy group, a phenoxy group or a hydroxyl group]. Examples of the polymer which can be effectively purified by the above process include polycarbonates, polylactides and polymethacrylates.

44. 发明专利

JPH0288636A PURIFICATION OF AROMATIC POLYETHER POLYMER 失效
公开(公告)号：JPH0288636A
公开(公告)日：1990-03-28
申请号：JP24169088
申请日：1988-09-27
申请人： DAICEL CHEM
发明人： YAMATO TSUTOMU
IPC分类号： C08G65/46
摘要： PURPOSE:To accomplish the title purification by filtering, grinding and granulating an aromatic polyether polymer mixture followed by extraction with a specific nonsolvent and then treatment in a mixed solution comprising aliphatic alcohol and ketone to remove byproduct salts, gel-like matter and reaction solvent to improve the bulk density of the polymer. CONSTITUTION:An aromatic polyether mixture comprising an aromatic polyether polymer, byproduct salts and reaction solvent is filtered through a filter pref. 1-100mum in mesh to remove the byproduct salts and the gel-like matter contained. The resultant mixture is then ground, granulated and then treated with a nonsolvent (e.g., methanol) completely soluble for the reaction solvent but insoluble for the polymer to extract said reaction solvent. The resultant crude polymer is further treated with a mixed solvent of aliphatic alcohol and ketone [pref. at the weight ratio (6:4)-(2:8)] to improve its bulk density, thus obtaining an aromatic polyether polymer pref. =0.3g/cc in bulk density, outstanding in heat resistance and mechanical properties and suitable for e.g., electrical and electronic equipment parts.

45. 发明专利

JPH0274614A PRODUCTION OF BORON NITRIDE FIBER 失效
公开(公告)号：JPH0274614A
公开(公告)日：1990-03-14
申请号：JP22421988
申请日：1988-09-07
申请人： ASAHI CHEMICAL IND
发明人： FUKUMA YASUNOSHIN
IPC分类号： C08G65/46 , D01F9/10
摘要： PURPOSE:To obtain the subject transparent fiber having uniform internal structure and high strength from an inexpensive raw material by using a fiber composed of a polymeric compound containing boron-oxygen-carbon bond as a raw material and calcining the fiber in the presence of a gas containing nitrogen element. CONSTITUTION:A fiber composed of a polymeric compound containing boron- oxygen-carbon bond is produced by reacting boric acid with phenols and at least one kind of compounds selected from diol, triol and polyol and is preferably infusibilized beforehand by heating for a long period at a temperature below the softening point. The objective fiber is produced by calcining the product in a gas containing nitrogen element (preferably ammonia gas).

46. 发明专利

JPH0232126A PURIFICATION OF POLYPHENYLENE ETHER 失效
公开(公告)号：JPH0232126A
公开(公告)日：1990-02-01
申请号：JP18156288
申请日：1988-07-22
申请人： ASAHI CHEMICAL IND
发明人： HORIGUCHI KOICHI , TAKAHASHI KAZUHIRO , IBE SADAO
IPC分类号： C08G65/46
摘要： PURPOSE:To obtain the subject polymer having decreased residual salt content and excellent electrical properties by forming wet polymer particles form a 2,6-disubstituted phenol polymer produced by oxidative polymerization and subjecting the particles to steam distillation. CONSTITUTION:A 2,6-disubstituted phenol such as 2,6-dimethylphenol is subjected to oxidative polymerization in the presence of a catalyst (e.g., copper salt) and the catalyst is decomposed and extracted by adding hydrochloric acid and water to the product. The treated product is added with a non-solvent (e.g., methanol) and filtered to obtain a wet polymer. The polymer is dispersed in hot water and subjected to steam distillation by blowing steam into the dispersion to obtain the objective polymer.

47. 发明专利

JPH021738A MOLDING RESIN 失效
公开(公告)号：JPH021738A
公开(公告)日：1990-01-08
申请号：JP31664488
申请日：1988-12-16
申请人： GEN ELECTRIC
发明人： KURISUTOFUAA MAIKERU HAUKINZU
IPC分类号： C08G65/46 , C08G63/19 , C08G63/52 , C08G63/553 , C08G63/64 , C08G63/79 , C08G63/91 , C08G64/00 , C08G64/04 , C08G64/06 , C08G64/22 , C08G64/42 , C08G65/48 , C08G75/00 , C08G75/23 , C08G85/00

48. 发明专利

JPH01263121A PURIFICATION OF AROMATIC POLYMER 失效
公开(公告)号：JPH01263121A
公开(公告)日：1989-10-19
申请号：JP9195588
申请日：1988-04-14
申请人： DAICEL CHEM
发明人： YAMATO TSUTOMU , KONDO MASAYOSHI
IPC分类号： C08G65/46 , C08G85/00
摘要： PURPOSE:To efficiently provide the subject polymer having good heat resistance, moisture absorbing property and weather resistance, by grinding an aromatic polymer mixture in a non-solvent and heating the ground polymer mixture under reduced pressure at a temperature between the glass transition temperature, etc., of the polymer and the vapor pressure temperature of a reaction solvent to remove the non-solvent and the solvent. CONSTITUTION:4,4-Dihydroxydiphenyl sulfone, etc., is polycondensated with 4,4'-dichlorodiphenyl sulfone, etc., in the presence of potassium carbonate in a reaction solvent such as tetramethylene sulfone at 225 deg.C to provide an aromatic polymer such as an aromatic polyether sulfone. The resultant aromatic polymer mixture is ground in a non-solvent such as methanol and subsequently heated under reduced pressures within an operative temperature range 3 lower than the glass transition temperature 1 or melting point of the aromatic polymer mixture and higher than the temperature of the vapor pressure 2 of the reaction solvent to distill of the non-solvent and the reaction solvent, thereby purifying the aromatic polymer.

49. 发明专利

JPS63243129A PURIFICATION OF POLYPHENYLENE ETHER 失效
公开(公告)号：JPS63243129A
公开(公告)日：1988-10-11
申请号：JP7579887
申请日：1987-03-31
申请人： ASAHI CHEMICAL IND
发明人： HORIGUCHI KOICHI , IBE SADAO
IPC分类号： C08G65/46
摘要： PURPOSE:To effectively remove sulfates, etc., formed as a by-product and obtain polyphenylene ether (PPE) stable to thermal oxidation, by initially treating the PPE with sulfuric acid and subjecting the treated PPE to steam distillation in separating and purifying the PPE from the reaction product. CONSTITUTION:A 2,6-disubstituted phenol (e.g. 2,6-dimethylphenol) is subjected to oxidative polymerization in the presence of a catalyst consisting of copper ions, halogen ions and an amine. An alcohol, such as methanol, is normally added to the resultant reaction product to deposit polyphenylene ether (PPE). Sulfuric acid in an equivalent amount of normally 1-5 times based on the sum of the amine and copper which is the catalyst is added. Filtration treatment is subsequently carried out and the obtained PPE is dispersed in methanol and neutralized with sodium hydroxide, etc. the resultant impregnated PPE is then dispersed in water or hot water and steam is blown into the system to carry out steam distillation. Thereby the aimed PPE is obtained. Furthermore, the above-mentioned steam distillation is preferably carried out at 50-150 deg.C for 10min-3hr.

50. 发明专利

JPS63101451A METHOD FOR IMPROVING CHARACTERISTIC OF PPE-CONTAINING MOLDING COMPOSITION 失效
公开(公告)号：JPS63101451A
公开(公告)日：1988-05-06
申请号：JP25173987
申请日：1987-10-07
申请人： HUELS CHEMISCHE WERKE AG
发明人： UIRUFURIITO RITSUBINGU , MARUTEIN BARUTOMAN
IPC分类号： C08G65/46 , C08G65/48 , C08K5/00 , C08K5/01 , C08L71/12

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