摘要:
A thermosetting resin composition which comprises a cyanate compound or an isocyanate compound represented by the following general formula (I):A--R.sub.1 --A (I)wherein R.sub.1 is an aromatic group, an alicyclic group or a mixed group thereof and A is a cyanate group or an isocyanate group, and a poly-(p-hydroxystyrene) derivative represented by the following general formula (II): ##STR1## wherein X is a fluorine atom, a bromine atom and a chlorine atom, R.sub.2 is an alkenyl group and an unsaturated carboxyl group, each having 2 to 4 carbon atoms, B is any one of a polymerization initiator residue, a polymerization-terminating agent residue, H and ##STR2## m is an integer of 1 to 4 and n is an integer of 5 to 100, and further containing a compound having at least one N-substituted unsaturated imido group, if required, can produce a printed circuit board of high flame retardness, low dielectric constant, low moisture absorption and a high mechanical strength at an elevated temperature.
摘要:
A multilayer printed circuit board comprising a plurality of alternately laminated layers of insulating layers and circuit conductor layers having a signal transmission delay time of 6.0 ns/m or less, excellent in heat resistance, adhesive, fire retardance, etc. can be produced by forming insulating layers using a fluorine-containing thermosetting resin composition.
摘要:
A flame-retardant resin composition contains a prepolymer represented by the general formula: ##STR1## wherein R.sub.1 stands for a hydrogen atom or an unreactive saturated group; R.sub.2 stands for a reactive unsaturated group; m and n each stand for a positive number of 1 to 4 and X and Y are each a copolymerization ratio and are in the range of 0.3 to 0.7 with the proviso that the sum total of X and Y is 1,as an essential component. The flame retardant resin composition is curable with uniform crosslinking density and without substantial stress concentration and is suitable for producing a laminate for a multilayer printed wiring board having a high thermal impact resistance as well as excellent heat resistance and
摘要:
The dislocation between each layer in a multi-layer circuit board and a process for producing the same and an application of the same is minimized by employing a specific adhesive layer between layers of the circuit board. The adhesive layer is composed of a film of a resin having a melting point higher than a temperature for forming the multi-layer (or laminated layer) circuit board and adhesive having a melting point lower than the temperature for forming the multi-layer circuit board.
摘要:
A thermosetting resin composition comprising a special poly(p-hydroxystyrene) derivative resin and a radical polymerization initiator, and if necessary an epoxy modified polybutadiene, can provide prepregs and laminates having a low dielectric constant, a shorter signalling delay time, good heat resistance and flame retardancy and thus being suitable for producing multilayer printed circuit boards.
摘要:
The present invention provides a thermosetting resin composition comprising(a) a prepolymer of a poly-p-hydroxystyrene derivative represented by the general formula ##STR1## wherein A is a halogen group, R.sub.1 is an alkenyl or alkenoyl group of 2 to 4 carbon atoms, 4 carbon atoms, m denotes a number of 1 to 4 and n denotes a number of 1 to 100,(b) an epoxy-modified polybutadiene, and(c) an aromatic maleimide compound, and a prepreg and a laminated sheet which use said resin composition.
摘要:
The present invention provides a thermosetting resin composition comprising(a) a prepolymer of a poly(p-hydroxystyrene) derivative represented by the general formula ##STR1## wherein A is a halogen group, R.sub.1 is an alkenyl or alkenoyl group of 2 to 4 carbon atoms, m denotes a number of 1 to 4 and n denotes a number of 1 to 100,(b) an epoxy-modified polybutadiene, and(c) an aromatic maleimide compound, and a prepreg and a laminated sheet which use said resin composition.
摘要:
A thermosetting resin composition comprising a special poly(p-hydroxystyrene) derivative resin and a radical polymerization initiator, and if necessary an epoxy modified polybutadiene, can provide prepregs and laminates having a low dielectric constant, a shorter signalling delay time, good heat resistance and flame retardancy and thus being suitable for producing multilayer printed circuit boards.
摘要:
The present invention provide a thermosetting resin composition comprising(a) a poly-p-hydroxstyrene derivative represented by the general formula ##STR1## wherein A is a halogen group, R.sub.1 is an alkenyl or alkenoyl group of 2 to 4 carbon atoms, m denotes a number of 1 to 4 and from more than denotes a number of 1 to 100,(b) an epoxy-modified polybutadiene, and(c) an aromatic maleimide compound, and a prepreg and a laminated sheet which use said resin composition.
摘要:
A thin film multilayer wiring material excellent in reliability, yield, productivity, and higher positioning accuracy includes an insulation organic film having a wiring pattern on one surface and an adhesive layer on another principal surface. The insulation organic film is a polyimide film having a heat resistance at a pyrolysis beginning temperature of 350.degree. to 550.degree. C., a dielectric constant of 3.5-2.2 and a flame retardance of V-0 or V-1 according to the UL-94 standard. The adhesive layer contains an ether bismaleimide compound.