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41. 发明专利

JP3349884B2 失效
公开(公告)号：JP3349884B2
公开(公告)日：2002-11-25
申请号：JP6795396
申请日：1996-03-25
IPC分类号： F16J15/10 , B32B9/00 , B32B27/06 , C04B35/52 , C04B41/83 , C08G8/00 , C08G8/10 , C08G61/10 , C08G61/12 , C08G73/06 , C09K3/10 , F16J15/12

42. 发明专利

JP2002226535A PHENOLIC RESIN COMPOSITION 失效
公开(公告)号：JP2002226535A
公开(公告)日：2002-08-14
申请号：JP2001027747
申请日：2001-02-05
申请人： SHOWA HIGHPOLYMER
发明人： KOZUTSUMI TOSHIHIKO
IPC分类号： C08G8/10 , C08G59/62
摘要： PROBLEM TO BE SOLVED: To provide a phenolic resin composition which is a novolak-based phenolic resin, has a low melt viscosity, and gives an epoxy resin cured product having a high cross-link density and high heat resistance, when used as a curing agent for an epoxy resin, and to provide a method for producing the phenolic resin composition. SOLUTION: This method for producing the novolak phenolic resin composition is characterized by synthesizing a methylol phenol precursor (phenolate salt) represented by general formula (1) [R is H or CH2OH; (n) is 0 or 1; Me is an alkali metal or an alkaline earth metal] by a resol reaction, purifying the product, neutralizing the purified product, removing the salt from the product, subjecting the product to a novolak reaction with a phenolic monomer under an acidic condition, and then purifying the reaction product to produce the phenolic polynuclear compound which has a degree of dispersion of mol.wt. distribution of 1.5 and contains phenol as a monomer for the nuclei and in which a tri- and less-nuclear product area fraction determined by GPC is

44. 发明专利

JP2002519192A 失效
公开(公告)号：JP2002519192A
公开(公告)日：2002-07-02
申请号：JP2000557922
申请日：1999-06-25
IPC分类号： G03F7/023 , B01D15/04 , B01J47/04 , C08G8/04 , C08G8/10 , C08G8/12 , G03F7/38

46. 发明专利

JP2001335673A LIGHT-COLORED PHENOLIC RESIN COMPOSITION AND METHOD OF PRODUCING THE SAME 失效
公开(公告)号：JP2001335673A
公开(公告)日：2001-12-04
申请号：JP2000159469
申请日：2000-05-30
申请人： SHOWA HIGHPOLYMER
发明人： MAKIYO TAKESHI , FUJIKAWA YASUOKI
IPC分类号： B27K3/50 , C08G8/10 , C08K5/524 , C08L61/06
摘要： PROBLEM TO BE SOLVED: To provide a phenolic resin having light color upon heat-curing after impregnation with a reinforcing material and a filler while maintaining the performances of conventional phenolic resin such as handling, characteristics after curing such as mechanical strength, water-proof, thermal resistance, chemical resistance or the like. SOLUTION: This light-colored phenolic resin composition is produced by blending a phenolic compound (P) and an aldehyde compound (F) so that the mol ratio (P/F) becomes 1 to 3, reacting using barium hydroxide as a catalyst, and after completion of the reaction, neutralizing with sulfuric acid for pH to be 6.0 to 8.0, and adding a phosphite ester compound.

49. 发明专利

JP2001106753A RESOL, AND PRODUCTION METHOD AND USE THEREOF 失效
公开(公告)号：JP2001106753A
公开(公告)日：2001-04-17
申请号：JP2000244366
申请日：2000-08-11
申请人： BAKELITE AG
发明人： WERNIK SONJA , DERN H-JUERGEN , KERKAIDOU ATHINA , SCHROETER STEPHAN
IPC分类号： C08G8/10 , C08G8/28 , C09D11/10 , C09D161/14 , C09J161/14
摘要： PROBLEM TO BE SOLVED: To provide a goodly water-dilutable resol hardly discolored, hardened while keeping a light color even when the resol is hardened at a high temperature, and capable of providing a hardened product having hardly reduced chemical and physical properties. SOLUTION: This resol is produced by subjecting a phenolic compound and aldehydes in a molar ratio of the phenolic compound to the aldehydes regulated so as to be within the range of (1:0.3)-(1:6) to an alkali condensation reaction, so that the reaction mixture may contain 0.1-10 wt.% one or more kinds of organic phosphonic acid and/or phosphinic acid, or an alkali metal salt and/or an alkaline earth metal salt thereof.

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