摘要:
A process for the epoxidation of olefins comprises contacting the olefin with urea-hydrogen peroxide in the presence of a rhenium oxide catalyst in an organic solvent.
摘要:
This invention relates to flexible epoxy resins characterized by a low ionic contamination total chlorine content less than 0.1%. The epoxy resins are liquids at room temperature, have Tg values when cured of less than or equal to 150.degree. C., have neat resin viscosities of 25,000 cps or less at 25.degree. C., and have a structural composition comprising an oligomeric backbone of alkyleneoxy repeat units, terminated with an aromatic moiety bearing one or more epoxy functionalities.
摘要:
This invention relates to flexible epoxy resins characterized by a low ionic contamination, total chlorine content less than 0.1%. The epoxy resins are liquids at room temperature, have Tg values when cured of less than or equal to 150.degree. C., have neat resin viscosities of 25,000 cps or less at 25.degree. C., and have a structural composition comprising an oligomeric backbone of alkylene or alkyleneoxy repeat units, terminated with an aromatic moiety bearing one or more epoxy functionalities.
摘要:
This invention relates to flexible epoxy resins characterized by a low ionic contamination, total chlorine content less than 0.1%. The epoxy resins are liquids at room temperature, have Tg values when cured of less than or equal to 150.degree. C., have neat resin viscosities of 25,000 cps or less at 25.degree. C., and have a structural composition comprising an oligomeric backbone of alkylene repeat units, terminated with an aromatic moiety bearing one or more epoxy functionalities. The flexible epoxy resins are used in adhesives for microelectronic applications.
摘要:
Radiation- or thermally-initiated cationically-curable styrene oxides of the structure ##STR1## are suitable for use in cationically curable adhesive and coating compositions.
摘要:
A thermoplastic or thermosetting curable adhesive composition for bonding an electronic component to a substrate in which the adhesive is cured in situ comprises one or more poly- or mono-functional maleimide compounds, or one or more poly- or mono-functional vinyl compounds other than maleimide compounds, or a combination of maleimide and vinyl compounds, a curing initiator and optionally, one or more fillers.
摘要:
A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
摘要:
A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.
摘要:
This invention relates to underfill encapsulant compositions prepared from allylated amide compounds to protect and reinforce the interconnections between an electronic component and a substrate in a microelectronic device.