(A) an epoxy resin represented by the general formula (1) wherein R₁ represents hydrogen, an alkyl group having 1 to 6 carbon atoms, substituted- or nonsubstituted-phenyl groups or halogen, and X represents and n represents an integer of 0 to 4, and (B) a curing agent, which composition provides a cured product having low hygroscopic property and high adhesiveness.
摘要:
A curing agent for epoxy resins which agent comprises a polyhydric phenol obtainable by condensating a phenol compound comprising a substituted phenol having at least one hydrophobic substituent on the aromatic ring and a p-hydroxybenzaldehyde compound, which cures an epoxy compound having at least two glycidyl groups in the molecule to give a cured product having balanced heat resistance and moisture resistance.
摘要:
A curing agent for an epoxy resin comprising (A) a polyhydric phenol obtainable by condensing a phenol compound and a hydroxybenzaldehyde and (B) a dihydric phenol, which gives a cured material of an epoxy resin having improved moisture and heat resistance and a small coefficient of linear thermal expansion.
摘要:
A novel polyhydric phenol represented by the general formula:
wherein R₁ to R₄ independently represent hydrogen, an alkyl or cycloalkyl group having 1 to 9 carbon atoms, or halogen, and X represents hydrogen, an alkyl group having 1 to 9 carbon atoms, or an aryl group, and n represents an average number of repeating units of 0.1 to 10. With the above polyhydric phenol as starting material, there is provided an epoxy resin represented by the general formula:
wherein R₁ to R₄, X and n are as defined above. There is provided an epoxy resin composition comprising the above epoxy resin and a curing agent. The cured products from the above epoxy resin are excellent in less hygroscopicity and have a balance between thermal resistance and curing performance.
摘要:
A curing agent for an epoxy resin comprising (A) a polyhydric phenol obtainable by condensing a phenol compound and a hydroxybenzaldehyde and (B) a dihydric phenol, which gives a cured material of an epoxy resin having improved moisture and heat resistance and a small coefficient of linear thermal expansion.
摘要:
Provided is an epoxy resin composition having low moisture absorption and excellent solder-crack resistance for encapsulating semiconductor comprising:
(A) an epoxy resin represented by formula (1)
(B) a curing agent having a phenolic hydroxyl group, and (C) inorganic filler in an amount of 60 to 98% by weight based on the whole composition, and the epoxy resin composition is preferably used for a resin-encapsulated type semiconductor apparatus.
摘要:
An epoxy resin composition having a lower hygroscopicity and a good balance between the heat-resistance, curability and adhesiveness and a resin-encapsulated semiconductor device produced by using the same composition, which epoxy resin composition comprises an epoxy resin having at least two epoxy groups in a molecule and a polyhydric phenol represented by the following general formula:
摘要:
An epoxy resin composition having a lower hygroscopicity and a good balance between the heat-resistance, curability and adhesiveness and a resin-encapsulated semiconductor device produced by using the same composition, which epoxy resin composition comprises an epoxy resin having at least two epoxy groups in a molecule and a polyhydric phenol represented by the following general formula: