发明名称 |
PROCESSO PARA A PREPARACAO DE MATERIAIS DE MOLDAGEM DE RESINA REACIONAL E APLICACAO |
摘要 |
<p>This invention provides reaction resin molded materials (OX/ICR molded materials) containing oxazolidinone and isocyanurate rings prepared from reaction resin mixtures of polyepoxides and polyisocyanates (EP/IC resins) in the presence of a hardening catalyst and has as an object to provide a simple manufacturing method for heat resistant OX/ICR molded materials with improved mechanical properties. According to this invention, EP/IC resins which are capable of casting and impregnating and which are free from solvents are provided. These resins have a formula mole ratio of EP:IC of about 1 to 5 and a viscosity of up to 7,000 mPa sec at 25 DEG C. and are cross-linked by means of tertiary amine or imidazole hardening catalysts at gelling temperatures of up to 130 DEG C. and post-hardening temperatures of 130 DEG to 200 DEG C. to produce OX/ICR molded materials with a mole ratio OX:ICR greater than 1, wherein the reaction of the epoxy and isocyanate groups is above 90% after the hardening.</p> |
申请公布号 |
BR8403123(A) |
申请公布日期 |
1985.06.04 |
申请号 |
BR19848403123 |
申请日期 |
1984.06.26 |
申请人 |
SIEMENS AG. |
发明人 |
HELMUT MARKERT;KLAUS KRETZSCHMAR;WOLFGANG ROGLER;KLAUS-ROBERT HAUSCHILDT |
分类号 |
C08G18/00;C08G18/02;C08G18/18;C08G18/22;C08G18/58;C08G18/82;H01B3/30;H01B3/40;(IPC1-7):C08G59/00;C08L77/02;C08L23/00 |
主分类号 |
C08G18/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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