摘要:
An epoxy resin composition comprising an epoxy resin, a curing agent, and a copolymer mixture comprising a long-chain organopolysiloxane copolymer [I] and a short-chain organopolysiloxane copolymer [II] which are each prepared by the addition reaction of an alkenyl-containing epoxy resin with a long-chain or short-chain organopolysiloxane containing pendant phenyl groups at a weight ratio of [II] to [I] of 0.3 to 0.6 is disclosed. The epoxy resin composition exhibits excellent printability, crack resistance, and moldability properties.
摘要:
An epoxy resin composition comprising (A) a naphthalene ring-containing epoxy resin, (B) a biphenyl-containing epoxy resin, (C) a specific phenolic resin, and (D) an inorganic filler shows good flow and cures to products having low modulus of elasticity, especially at temperatures above Tg, a low coefficient of expansion, high Tg irrespective of low stresses, and minimized water absorption. Then semiconductor devices encapsulated with the present composition remain highly reliable even after being subject to thermal shocks upon surface mounting.
摘要:
A naphthalene derivative of the following general formula (1) having at least one allyl or propenyl group is described. ##STR1## In the formula, each G represents a hydrogen atoms or ##STR2## R.sup.1 's independently represent a hydrogen atom, an allyl group or a propenyl group provided that at least one or R.sup.1 's is an allyl group or a propenyl group, and R.sup.2 's independently represent a hydrogen atom, an unsubstituted or substituted monovalent hydrocarbon group having from 1 to 6 carbon atoms, or a halogen atom. The derivative is useful for modifying curable resins or resin compositions to provide cured products which have a low water absorption, high strength and a high glass transition temperature. The derivative has good working properties and a good heat resistance.
摘要:
A naphthalene of the following formula (1) having at least two allyl or propenyl groups ##STR1## wherein each G represents a hydrogen atoms or ##STR2## R.sup.1 's independently represent a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group having from 1 to 6 carbon atoms, R.sup.2 's independently represent a hydrogen atom, an allyl group or a propenyl group, R.sup.3 represents an allyl group or a propenyl group, X represents a hydrogen atom or a halogen atom, and n is an integer of from 0 to 6. The derivative is useful for modifying curable resins or resin compositions to provide cured products which have a low water absorption, high strength and a high glass transition temperature. The derivative has good working properties and a good heat resistance.
摘要:
An epoxy resin composition which comprises a curable epoxy resin, a curing agent, an inorganic filler, and at least one copolymer selected from copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and one or more alkenyl groups and the specific organopolysiloxanes; copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and the specific amino group-containing organopolysiloxanes.
摘要:
A thermosetting resin composition contains (A) an imide compound having a maleimide group, (B) an epoxy resin, (C) a phenolic resin, and optionally, (D) an aromatic polymer/organopolysiloxane copolymer wherein component (B) and/or (C) has a double bond conjugated with an aromatic group and component (B) and/or (C) has a naphthalene ring. The composition is easily workable and cures to products having improved adhesion, heat resistance, low thermal expansion, and low water absorption.
摘要:
An epoxy resin composition which comprises a curable epoxy resin, a curing agent, an inorganic filler, and at least one copolymer selected from copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and one or more alkenyl groups and the specific organopolysiloxanes; copolymers obtained by an addition reaction between aromatic polymers containing one or more epoxy groups and the specific amino group-containing organopolysiloxanes.
摘要:
An epoxy resin-based composition suitable for encapsulation of semiconductor devices is proposed. The resin composition is capable of giving a cured resin encapsulation highly resistant against crack formation by virtue of the unique ingredient therein, in addition to the thermally curable epoxy resin and an inorganic filler, which is a combination of an organopolysiloxane having a hydrocarbon group substituted by certain functional groups, e.g. glycidyl, amino, mercapto and the like, and a block copolymer composed of the segments of a polymeric aromatic moiety and segments of an organopolysiloxane moiety.
摘要:
A silicone resin composition comprising (A) a heat-curable organopolysiloxane having a melting point of 40-130° C., (B) a white pigment, (C) an inorganic filler, and (D) a curing catalyst is transfer or compression moldable at elevated temperatures into a cured product having white color, heat resistance, light resistance and minimal yellowing. The cured product is suited as a case in which an optoelectronic part is enclosed.
摘要:
A silicone resin composition comprising (A) a heat-curable organopolysiloxane having a melting point of 40-130° C., (B) a white pigment, (C) an inorganic filler, and (D) a curing catalyst is transfer or compression moldable at elevated temperatures into a cured product having white color, heat resistance, light resistance and minimal yellowing. The cured product is suited as a case in which an optoelectronic part is enclosed.