公开(公告)号：EP1360171A1

公开(公告)日：2003-11-12

申请号：EP02714146.4

申请日：2002-02-05

申请人： Lonza AG

发明人： GMÜR, Martin ,  DAUM, Ulrich ,  HEYL-FRANK, Brigitta ,  HANSELMANN, Paul ,  FALCHETTO, Alessandro

IPC分类号： C07C261/02 ,  C08G73/06

CPC分类号： C07C261/02 ,  C08G73/0655 ,  H05K1/0346

摘要： The invention relates to prepolymer compositions on the basis of Novolac cyanates of the general formula (I), wherein n is a number of from 0 to 20 and the groups R are the same or different and represent hydrogen or methyl. The inventive compositions contain: 30 to 90 parts by weight of a prepolymer from Novolac cyanates (I) wherein R = hydrogen (Ia) and 10 to 70 parts by weight of Novolac cyanates (I) wherein R = methyl (Ib), and optionally highly dispersible silicon dioxides and/or particulate or fibrous fillers. The inventive compositions are solid at normal temperature and can be ground to flowable powders. They have an excellent stability when stored and are easy to process and especially suitable for use as the resin component in base materials for printed circuits and resin-bound abrasive products.

公开(公告)号：EP1399138B1

公开(公告)日：2006-02-08

申请号：EP02743039.6

申请日：2002-05-17

申请人： Lonza AG

发明人： HEYL-FRANK, Brigitta ,  IRLE, Heike ,  PIANZOLA, Daniel ,  ZACHER, Uwe ,  JACKSON, Barry

IPC分类号： A61K31/19

CPC分类号： A61K31/19 ,  C07C51/09 ,  C07C59/01

摘要： Solid formulations of sodium 3-hydroxy-3-methylbutyrate are produced by the hydrolysis of 4,4-dimethyl-2-oxetanone with aqueous sodium hydroxide to give a solution of sodium 3-hydroxy-3-methylbutyrate and the solution obtained thus is absorbed onto synthetic silicic acid. Said formulations are lightly hygroscopic and easily handled.

公开(公告)号：EP1360171B1

公开(公告)日：2008-05-14

申请号：EP02714146.4

申请日：2002-02-05

申请人： Lonza AG

发明人： GMÜR, Martin ,  DAUM, Ulrich ,  HEYL-FRANK, Brigitta ,  HANSELMANN, Paul ,  FALCHETTO, Alessandro

IPC分类号： C07C261/02 ,  C08G73/06

CPC分类号： C07C261/02 ,  C08G73/0655 ,  H05K1/0346

摘要： The invention relates to prepolymer compositions on the basis of Novolac cyanates of the general formula (I), wherein n is a number of from 0 to 20 and the groups R are the same or different and represent hydrogen or methyl. The inventive compositions contain: 30 to 90 parts by weight of a prepolymer from Novolac cyanates (I) wherein R = hydrogen (Ia) and 10 to 70 parts by weight of Novolac cyanates (I) wherein R = methyl (Ib), and optionally highly dispersible silicon dioxides and/or particulate or fibrous fillers. The inventive compositions are solid at normal temperature and can be ground to flowable powders. They have an excellent stability when stored and are easy to process and especially suitable for use as the resin component in base materials for printed circuits and resin-bound abrasive products.

公开(公告)号：EP1399138A1

公开(公告)日：2004-03-24

申请号：EP02743039.6

申请日：2002-05-17

申请人： Lonza AG

发明人： HEYL-FRANK, Brigitta ,  IRLE, Heike ,  PIANZOLA, Daniel ,  ZACHER, Uwe ,  JACKSON, Barry

IPC分类号： A61K31/19

CPC分类号： A61K31/19 ,  C07C51/09 ,  C07C59/01

摘要： Solid formulations of sodium 3-hydroxy-3-methylbutyrate are produced by the hydrolysis of 4,4-dimethyl-2-oxetanone with aqueous sodium hydroxide to give a solution of sodium 3-hydroxy-3-methylbutyrate and the solution obtained thus is absorbed onto synthetic silicic acid. Said formulations are lightly hygroscopic and easily handled.